.page-faq {
  background: var(--c-navy);
  color: var(--c-white);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 6vw, 76px) 0 clamp(28px, 4vw, 52px);
  background:
    linear-gradient(112deg, var(--c-navy) 0%, var(--c-navy) 62%, var(--c-navy-2) 62%, var(--c-navy-2) 100%);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 40%;
  right: -8%;
  bottom: 16%;
  height: 2px;
  background: repeating-linear-gradient(90deg, var(--c-cyan) 0 46px, transparent 46px 92px);
  transform: rotate(-5deg);
  opacity: 0.42;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: start;
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7.4vw, 4.9rem);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--c-white);
  transform: skewX(-3deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__lead {
  margin: 0 0 22px;
  max-width: 54ch;
  color: var(--c-mist);
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  line-height: 1.75;
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  color: var(--c-white);
  font-size: 0.9rem;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-chip__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-scale);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(55, 245, 224, 0.1);
  color: var(--c-cyan);
  outline: none;
}

.page-faq .faq-chip:hover .faq-chip__num,
.page-faq .faq-chip:focus-visible .faq-chip__num {
  color: var(--c-orange);
}

.page-faq .faq-hero__count {
  margin: 0;
  font-size: 0.86rem;
  color: var(--c-scale);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__count strong {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--c-orange);
}

/* 检索示例面板 */
.page-faq .faq-probe {
  position: relative;
  padding: 18px 18px 20px;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--r-m);
  box-shadow: -6px 6px 0 rgba(55, 245, 224, 0.13), 0 0 0 1px rgba(7, 20, 38, 0.6);
}

.page-faq .faq-probe__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-cyan);
}

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

.page-faq .faq-probe__list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 8px 10px;
  background: var(--c-navy);
  border-left: 2px solid var(--c-orange);
  border-radius: 2px;
}

.page-faq .faq-probe__list code {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--c-white);
  flex: none;
}

.page-faq .faq-probe__list span {
  font-size: 0.82rem;
  color: var(--c-mist);
}

.page-faq .faq-probe__note {
  margin: 0;
  font-size: 0.8rem;
  color: var(--c-scale);
  line-height: 1.6;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 52px);
  padding: clamp(30px, 5vw, 60px) 0 clamp(52px, 7vw, 96px);
}

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

.page-faq .faq-toc__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-scale);
  text-transform: uppercase;
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 8px;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-pill);
  color: var(--c-mist);
  font-size: 0.9rem;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-scale);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  border-color: var(--c-cyan);
  color: var(--c-cyan);
  background: rgba(55, 245, 224, 0.07);
  outline: none;
}

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

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 96px;
  padding-bottom: clamp(30px, 4vw, 50px);
  margin-bottom: clamp(30px, 4vw, 52px);
  border-bottom: 1px solid var(--c-line-soft);
}

.page-faq .faq-section__head {
  margin-bottom: 20px;
}

.page-faq .faq-section__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-cyan);
  padding: 3px 8px;
  border: 1px solid rgba(55, 245, 224, 0.42);
  border-radius: var(--r-s);
}

.page-faq .faq-section__head h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.8vw, 2.5rem);
  font-weight: 700;
  line-height: 1.1;
  color: var(--c-white);
}

.page-faq .faq-section__desc {
  margin: 0;
  max-width: 64ch;
  color: var(--c-mist);
  font-size: 0.96rem;
  line-height: 1.75;
}

/* 章节图 */
.page-faq .media-frame {
  margin: 0 0 22px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-m);
  background: var(--c-navy-2);
  overflow: hidden;
}

.page-faq .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .media-frame--wide .media-frame__img {
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .media-frame--tall {
  max-width: 420px;
}

.page-faq .media-frame--tall .media-frame__img {
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.page-faq .media-frame__caption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.03em;
  color: var(--c-scale);
  border-top: 1px solid var(--c-line-soft);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .qa {
  margin-bottom: 10px;
  background: var(--c-navy-2);
  border: 1px solid var(--c-line);
  border-radius: var(--r-m);
  box-shadow: 4px 4px 0 rgba(19, 43, 69, 0.55);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(184, 199, 217, 0.4);
}

.page-faq .qa[open] {
  border-color: rgba(55, 245, 224, 0.45);
  box-shadow: 4px 4px 0 rgba(55, 245, 224, 0.12);
}

.page-faq .qa__head {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.05em;
  color: var(--c-orange);
}

.page-faq .qa__title {
  flex: 1;
  min-width: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-white);
}

.page-faq .qa__sign {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .qa__sign::before,
.page-faq .qa__sign::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  transition: transform var(--dur) var(--ease);
}

.page-faq .qa__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] .qa__sign::after {
  transform: scaleY(0);
}

.page-faq .qa__body {
  margin: 0 18px 16px 42px;
  padding-top: 14px;
  border-top: 1px dashed var(--c-line-soft);
  color: var(--c-mist);
  font-size: 0.95rem;
  line-height: 1.78;
}

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

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

.page-faq .qa__body ol,
.page-faq .qa__body ul {
  margin: 0 0 10px;
  padding-left: 1.3em;
  display: grid;
  gap: 6px;
}

.page-faq .qa__body ol:last-child,
.page-faq .qa__body ul:last-child {
  margin-bottom: 0;
}

.page-faq .qa__body li::marker {
  color: var(--c-cyan);
  font-family: var(--font-mono);
  font-size: 0.86em;
}

.page-faq .qa__body code {
  padding: 1px 6px;
  background: rgba(55, 245, 224, 0.1);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.88em;
  color: var(--c-cyan);
}

/* ---------- 联系准备 ---------- */
.page-faq .faq-contact {
  position: relative;
  overflow: hidden;
  scroll-margin-top: 96px;
  padding: clamp(22px, 4vw, 38px);
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-radius: var(--r-l);
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: repeating-linear-gradient(90deg, var(--c-cyan) 0 28px, transparent 28px 42px, var(--c-orange) 42px 56px, transparent 56px 84px);
  opacity: 0.8;
}

.page-faq .faq-contact__head {
  margin-bottom: 20px;
}

.page-faq .faq-contact__num {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 8px;
  border: 1px solid rgba(255, 122, 26, 0.5);
  border-radius: var(--r-s);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-orange);
}

.page-faq .faq-contact__head h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--c-white);
}

.page-faq .faq-contact__head p {
  margin: 0;
  max-width: 60ch;
  color: var(--c-mist);
  font-size: 0.94rem;
  line-height: 1.7;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-checklist li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  background: var(--c-navy-2);
  border: 1px solid var(--c-line-soft);
  border-radius: var(--r-s);
  color: var(--c-mist);
  font-size: 0.92rem;
  line-height: 1.6;
}

.page-faq .faq-checklist__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--c-orange);
}

.page-faq .faq-mail {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  margin-bottom: 22px;
  background: var(--c-navy);
  border: 1px solid rgba(55, 245, 224, 0.35);
  border-radius: var(--r-m);
}

.page-faq .faq-mail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-scale);
}

.page-faq .faq-mail__value {
  font-family: var(--font-mono);
  font-size: clamp(0.95rem, 2.4vw, 1.2rem);
  font-weight: 700;
  color: var(--c-cyan);
  word-break: break-all;
}

.page-faq .faq-mail__note {
  font-size: 0.84rem;
  color: var(--c-mist);
  line-height: 1.65;
}

.page-faq .faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.8fr);
  }

  .page-faq .faq-probe {
    margin-top: 12px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 246px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 100px;
    align-self: start;
    padding-right: 8px;
    border-right: 1px solid var(--c-line-soft);
  }

  .page-faq .faq-toc__list {
    display: grid;
    gap: 2px;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__link {
    border: none;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 10px 12px 10px 14px;
    white-space: normal;
    font-size: 0.94rem;
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    border-left-color: var(--c-cyan);
    background: rgba(55, 245, 224, 0.07);
  }

  .page-faq .faq-checklist {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa__head {
    padding: 17px 22px;
  }

  .page-faq .qa__body {
    margin: 0 22px 18px 46px;
  }
}

/* ---------- 窄屏 ---------- */
@media (max-width: 560px) {
  .page-faq .qa__tag {
    display: none;
  }

  .page-faq .qa__body {
    margin: 0 16px 15px 16px;
  }

  .page-faq .qa__head {
    padding: 14px 16px;
  }

  .page-faq .media-frame--tall {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chip,
  .page-faq .faq-toc__link,
  .page-faq .qa,
  .page-faq .qa__sign::before,
  .page-faq .qa__sign::after {
    transition: none;
  }
}
<<<END>>>