.page-faq {
  --faq-gutter: clamp(1.1rem, 4vw, 3rem);
  --faq-coral-glow: rgba(255, 107, 74, 0.16);
  display: block;
  color: var(--mist);
  background:
    radial-gradient(ellipse 70% 45% at 82% -8%, rgba(194, 24, 7, 0.26), transparent 62%),
    radial-gradient(ellipse 55% 40% at 6% 42%, rgba(11, 20, 32, 0.9), transparent 70%),
    var(--abyss);
  padding-block: clamp(1.25rem, 3.5vw, 2.5rem) clamp(3rem, 8vw, 6rem);
}

.page-faq .faq-shell {
  width: 100%;
  max-width: 1240px;
  margin-inline: auto;
  padding-inline: var(--faq-gutter);
}

/* 面包屑 */
.page-faq .faq-breadcrumb {
  margin-bottom: clamp(1.5rem, 4vw, 2.75rem);
}

.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  margin-right: 0.5rem;
  color: rgba(138, 164, 174, 0.5);
}

.page-faq .breadcrumb-item a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 164, 174, 0.35);
}

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

.page-faq .breadcrumb-item[aria-current="page"] {
  color: var(--mist);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  align-items: end;
}

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

.page-faq .section-kicker {
  margin: 0 0 0.9rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--coral);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(2.1rem, 6.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
  color: var(--mist);
  text-wrap: balance;
}

.page-faq .faq-accent {
  color: var(--coral);
  box-shadow: inset 0 -0.14em 0 rgba(194, 24, 7, 0.55);
}

.page-faq .faq-lede {
  max-width: 44rem;
  margin: clamp(1rem, 2vw, 1.5rem) 0 0;
  font-size: clamp(1rem, 1.4vw, 1.0625rem);
  line-height: 1.8;
  color: rgba(220, 230, 232, 0.82);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(1.4rem, 3vw, 2rem);
}

.page-faq .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.78rem 1.4rem;
  font-family: var(--display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.18s var(--ease-out), background 0.18s var(--ease-out), color 0.18s var(--ease-out);
}

.page-faq .button--primary {
  background: var(--red);
  border-color: var(--red);
  color: var(--paper);
  box-shadow: 5px 5px 0 rgba(122, 16, 10, 0.6);
}

.page-faq .button--primary:hover {
  background: var(--coral);
  border-color: var(--coral);
  color: var(--abyss);
  transform: translate(-2px, -2px);
}

.page-faq .button--ghost {
  background: transparent;
  border-color: rgba(138, 164, 174, 0.45);
  color: var(--mist);
}

.page-faq .button--ghost:hover {
  border-color: var(--coral);
  color: var(--coral);
  transform: translate(-2px, -2px);
}

.page-faq .faq-hero-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 1px;
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 0;
  background: var(--hard-line);
  border: 2px solid var(--hard-line);
}

.page-faq .faq-fact {
  background: var(--night);
  padding: 0.9rem 1rem;
}

.page-faq .faq-fact dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-fact dd {
  margin: 0.4rem 0 0;
  font-family: var(--display);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .faq-hero-visual {
  margin: 0;
  min-width: 0;
}

.page-faq .media-frame {
  overflow: hidden;
  border: 2px solid var(--hard-line);
  background: var(--night);
  box-shadow: var(--shadow-hard);
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.86) contrast(1.05);
}

.page-faq .media-caption {
  margin-top: 0.7rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  line-height: 1.6;
  color: var(--cyan);
}

/* 主体两栏 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
  margin-top: clamp(2.5rem, 6vw, 4rem);
}

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

.page-faq .faq-index-inner {
  border: 2px solid var(--hard-line);
  border-left: 4px solid var(--red);
  background: linear-gradient(160deg, rgba(11, 20, 32, 0.98), rgba(5, 8, 14, 0.9));
  padding: 1.1rem 1.1rem 1.25rem;
}

.page-faq .faq-index-title {
  margin: 0 0 0.9rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--coral);
}

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

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 0.6rem;
  padding: 0.62rem 0.55rem;
  text-decoration: none;
  color: var(--mist);
  border-left: 3px solid transparent;
  background: rgba(138, 164, 174, 0.05);
  transition: background 0.18s var(--ease-out), border-color 0.18s var(--ease-out), color 0.18s var(--ease-out);
}

.page-faq .faq-index-link:hover {
  background: rgba(194, 24, 7, 0.18);
  border-left-color: var(--coral);
}

.page-faq .faq-index-link[aria-current="location"] {
  background: var(--red-glass);
  border-left-color: var(--coral);
  color: var(--coral);
}

.page-faq .faq-index-no {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--cyan);
}

.page-faq .faq-index-link[aria-current="location"] .faq-index-no {
  color: var(--coral);
}

.page-faq .faq-index-name {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.35;
}

.page-faq .faq-index-count {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--cyan);
  border: 1px solid var(--hard-line);
  padding: 0.05rem 0.35rem;
}

.page-faq .faq-index-note {
  margin: 1rem 0 0;
  font-family: var(--mono);
  font-size: 0.7rem;
  line-height: 1.6;
  color: rgba(138, 164, 174, 0.85);
}

/* 正文区块 */
.page-faq .faq-article {
  min-width: 0;
  display: grid;
  gap: clamp(2.25rem, 5vw, 3.5rem);
}

.page-faq .faq-section {
  scroll-margin-top: 6.5rem;
}

.page-faq .faq-section-head {
  position: relative;
  padding-top: 1.1rem;
  border-top: 2px solid var(--hard-line);
  margin-bottom: 1.35rem;
}

.page-faq .faq-section-head::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: clamp(48px, 14vw, 96px);
  height: 2px;
  background: var(--coral);
}

.page-faq .faq-section-no {
  margin: 0 0 0.5rem;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  color: var(--signal);
}

.page-faq .faq-section .section-title {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.5rem, 3.4vw, 2.15rem);
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .faq-section .section-lede {
  max-width: 42rem;
  margin: 0.7rem 0 0;
  font-size: 0.98rem;
  line-height: 1.78;
  color: rgba(220, 230, 232, 0.74);
}

.page-faq .faq-section-visual {
  display: grid;
  gap: 1rem;
  margin-bottom: 1.6rem;
}

.page-faq .faq-diagram {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--night);
  border: 2px solid var(--hard-line);
  padding: 0.5rem;
}

/* 折叠问答 */
.page-faq .qa-list {
  counter-reset: qa;
  display: grid;
  gap: 0.75rem;
}

.page-faq .qa {
  counter-increment: qa;
  border: 2px solid var(--hard-line);
  background: var(--night);
  transition: border-color 0.18s var(--ease-out), background 0.18s var(--ease-out);
}

.page-faq .qa:hover {
  border-color: rgba(138, 164, 174, 0.55);
}

.page-faq .qa[open] {
  border-color: var(--coral);
  background: linear-gradient(180deg, rgba(194, 24, 7, 0.14), rgba(11, 20, 32, 0.98) 42%);
  box-shadow: 5px 5px 0 rgba(122, 16, 10, 0.35);
}

.page-faq .qa-summary {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 0.75rem;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-no::before {
  content: counter(qa, decimal-leading-zero);
  display: block;
  font-family: var(--mono);
  font-size: 0.78rem;
  line-height: 1.7;
  color: var(--cyan);
}

.page-faq .qa[open] .qa-no::before {
  color: var(--coral);
}

.page-faq .qa-question {
  font-family: var(--display);
  font-size: clamp(0.98rem, 1.6vw, 1.06rem);
  font-weight: 700;
  line-height: 1.55;
  color: var(--mist);
}

.page-faq .qa-icon {
  position: relative;
  width: 1.05rem;
  height: 1.05rem;
  margin-top: 0.28rem;
  flex: none;
}

.page-faq .qa-icon::before,
.page-faq .qa-icon::after {
  content: "";
  position: absolute;
  background: var(--coral);
  transition: transform 0.2s var(--ease-out), opacity 0.2s var(--ease-out);
}

.page-faq .qa-icon::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa-icon::after {
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .qa[open] .qa-icon::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa-body {
  padding: 0 1rem 1.15rem;
  border-top: 1px dashed rgba(138, 164, 174, 0.28);
  margin-top: 0.1rem;
  padding-top: 0.95rem;
}

.page-faq .qa-body p {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: rgba(220, 230, 232, 0.84);
}

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

.page-faq .qa-body a {
  color: var(--coral);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 74, 0.45);
}

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

.page-faq .qa-steps {
  margin: 0 0 0.8rem;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 0.55rem;
}

.page-faq .qa-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2rem;
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(220, 230, 232, 0.84);
}

.page-faq .qa-steps li::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0.12rem;
  width: 1.35rem;
  height: 1.35rem;
  display: grid;
  place-items: center;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--coral);
  border: 1px solid rgba(255, 107, 74, 0.55);
}

.page-faq .qa-result {
  margin: 0;
  padding: 0.6rem 0.8rem;
  border-left: 3px solid var(--signal);
  background: rgba(194, 24, 7, 0.12);
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
}

/* 联系卡片 */
.page-faq .faq-contact {
  border: 2px solid var(--coral);
  background:
    linear-gradient(150deg, rgba(122, 16, 10, 0.55), rgba(5, 8, 14, 0.96) 58%),
    var(--night);
  padding: clamp(1.35rem, 3vw, 2.1rem);
  box-shadow: 10px 10px 0 rgba(122, 16, 10, 0.35);
}

.page-faq .faq-contact-title {
  margin: 0;
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3vw, 1.75rem);
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .faq-contact-note {
  margin: 0.6rem 0 1.15rem;
  font-size: 0.94rem;
  line-height: 1.75;
  color: rgba(220, 230, 232, 0.8);
}

.page-faq .faq-contact-list {
  margin: 0;
  display: grid;
  gap: 1px;
  background: rgba(138, 164, 174, 0.24);
  border: 1px solid rgba(138, 164, 174, 0.24);
}

.page-faq .faq-contact-row {
  display: grid;
  gap: 0.25rem;
  padding: 0.7rem 0.85rem;
  background: rgba(5, 8, 14, 0.6);
}

.page-faq .faq-contact-row dt {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-contact-row dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.55;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-contact-hours {
  margin: 0.9rem 0 0;
  font-size: 0.85rem;
  line-height: 1.75;
  color: rgba(220, 230, 232, 0.7);
}

.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.25rem;
}

/* 平板及以上 */
@media (min-width: 720px) {
  .page-faq .faq-section-visual {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    align-items: center;
  }

  .page-faq .faq-contact-row {
    grid-template-columns: 8rem 1fr;
    align-items: baseline;
    gap: 0.75rem;
  }
}

/* 桌面双栏：左侧粘性分类索引 */
@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(2rem, 4vw, 3.5rem);
  }

  .page-faq .faq-body {
    grid-template-columns: minmax(220px, 268px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index-inner {
    position: sticky;
    top: 6.5rem;
  }

  .page-faq .qa-summary {
    padding: 1.1rem 1.25rem;
  }

  .page-faq .qa-body {
    padding: 1rem 1.25rem 1.3rem;
  }

  .page-faq .faq-section-visual {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero h1 {
    max-width: 16ch;
  }
}
<<<END>>>