.page-faq {
  --faq-gap: clamp(18px, 2.4vw, 32px);
  --faq-line: rgba(46, 74, 120, 0.6);
  --faq-line-soft: rgba(46, 74, 120, 0.35);
  --faq-radius: var(--card-radius);
  --faq-body-text: rgba(244, 247, 255, 0.84);
  display: block;
  background: var(--space-900);
  color: var(--paper-white);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 60px) 0 clamp(28px, 5vw, 64px);
  background:
    radial-gradient(120% 95% at 88% 4%, rgba(198, 255, 62, 0.12), transparent 58%),
    radial-gradient(95% 75% at 4% 8%, rgba(46, 74, 120, 0.55), transparent 66%),
    var(--space-900);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--faq-line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--faq-line-soft) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 82%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 82%);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumbs {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-faq .breadcrumbs a {
  color: var(--lime);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
}

.page-faq .faq-hero__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 18ch;
  letter-spacing: -0.025em;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .faq-search {
  margin-top: clamp(22px, 3vw, 34px);
  padding: 16px 18px 14px;
  border: 2px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--midnight);
  box-shadow: var(--shadow-hard);
  display: grid;
  gap: 10px;
}

.page-faq .faq-search__label {
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.page-faq .faq-search__input {
  width: 100%;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--paper-white);
  background: var(--space-900);
  border: 1px solid var(--line);
  border-radius: var(--pill);
  padding: 12px 18px;
  outline: none;
  transition: border-color 200ms var(--ease), box-shadow 200ms var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: rgba(143, 174, 220, 0.75);
}

.page-faq .faq-search__input:focus-visible {
  border-color: var(--lime);
  box-shadow: 0 0 0 3px rgba(198, 255, 62, 0.28);
}

.page-faq .faq-search__hint {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 2px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--midnight);
  box-shadow: var(--shadow-hard-lg);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 4%, 100% 100%, 0 96%);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 2 / 1;
}

.page-faq .faq-hero__cap {
  padding: 12px 16px 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-hero__stripe {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--lime), var(--amber) 55%, var(--signal));
}

/* ---------- 锚点目录 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: 0;
  z-index: 6;
  background: rgba(10, 23, 48, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 12px var(--gutter);
  list-style: none;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  scrollbar-width: none;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__link {
  scroll-snap-align: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  color: var(--mist);
  font-size: 13px;
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-index__no {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--lime);
  color: var(--paper-white);
}

.page-faq .faq-index__link[aria-current="true"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--graphite);
}

.page-faq .faq-index__link[aria-current="true"] .faq-index__no {
  color: var(--graphite);
}

/* ---------- 分组 ---------- */
.page-faq .faq-body {
  background: var(--space-900);
}

.page-faq .faq-group {
  padding: clamp(38px, 6vw, 84px) 0;
  border-bottom: 1px solid var(--faq-line-soft);
  scroll-margin-top: 84px;
}

.page-faq .faq-group--alt {
  background:
    linear-gradient(180deg, rgba(20, 42, 76, 0.72), rgba(10, 23, 48, 0.2) 78%),
    var(--space-900);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 24px);
  align-items: start;
  margin-bottom: clamp(20px, 3vw, 34px);
  padding-bottom: clamp(14px, 2vw, 22px);
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.2vw, 34px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--lime);
  padding-top: 4px;
}

.page-faq .faq-group__title {
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.page-faq .faq-group__note {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

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

.page-faq .faq-item {
  border: 2px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--midnight);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  transition: border-color 220ms var(--ease), box-shadow 220ms var(--ease), transform 220ms var(--ease);
}

.page-faq .faq-item:hover {
  transform: translateY(-3px);
  border-color: rgba(198, 255, 62, 0.7);
}

.page-faq .faq-item[open] {
  border-color: var(--lime);
  background: linear-gradient(180deg, rgba(198, 255, 62, 0.08), rgba(20, 42, 76, 0.98) 34%);
  box-shadow: var(--shadow-hard-lg);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0;
  padding: clamp(16px, 2.3vw, 22px) clamp(16px, 2.5vw, 26px) clamp(16px, 2.3vw, 22px) calc(clamp(16px, 2.5vw, 26px) + 12px);
  font-family: var(--font-display);
  font-size: clamp(15px, 1.45vw, 18px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper-white);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--lime);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 240ms var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::before {
  transform: scaleY(1);
}

.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 600;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--amber);
}

.page-faq .faq-item__a {
  padding: 0 clamp(16px, 2.5vw, 26px) clamp(18px, 2.4vw, 26px) calc(clamp(16px, 2.5vw, 26px) + 12px);
  font-size: clamp(15px, 1.3vw, 16px);
  line-height: 1.85;
  color: var(--faq-body-text);
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
  max-width: 68ch;
}

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

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

/* 步骤型答案 */
.page-faq .faq-steps {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  counter-reset: faq-step;
  display: grid;
  gap: 14px;
  max-width: 68ch;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 36px;
  line-height: 1.8;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step);
  position: absolute;
  left: 0;
  top: 3px;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--lime);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--lime);
}

.page-faq .faq-steps li::after {
  content: "";
  position: absolute;
  left: 11px;
  top: 29px;
  bottom: -12px;
  width: 1px;
  background: rgba(198, 255, 62, 0.3);
}

.page-faq .faq-steps li:last-child::after {
  display: none;
}

/* 对照表 */
.page-faq .faq-compare {
  margin: 6px 0 0;
  border: 2px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--space-900);
  overflow-x: auto;
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-compare table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-faq .faq-compare__cap {
  padding: 14px 18px 8px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-compare th,
.page-faq .faq-compare td {
  padding: 14px 18px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--faq-line-soft);
  line-height: 1.7;
}

.page-faq .faq-compare thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--lime);
  background: rgba(10, 23, 48, 0.9);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-compare tbody tr:nth-child(even) {
  background: rgba(10, 23, 48, 0.5);
}

.page-faq .faq-compare tbody td:first-child {
  color: var(--paper-white);
  font-weight: 600;
  border-left: 3px solid var(--amber);
}

.page-faq .faq-compare tbody tr:last-child td {
  border-bottom: none;
}

/* 配图 */
.page-faq .faq-figure {
  margin: 6px 0 0;
  border: 2px solid var(--line);
  border-radius: var(--faq-radius);
  background: var(--midnight);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
  clip-path: polygon(0 3%, 100% 0, 100% 100%, 0 97%);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 10 / 7;
}

.page-faq .faq-figure__cap {
  padding: 12px 18px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
  border-top: 1px solid var(--faq-line-soft);
}

/* ---------- 收束区 ---------- */
.page-faq .faq-group--contact {
  border-bottom: none;
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 32px);
  padding: clamp(20px, 3vw, 34px);
  border: 2px solid var(--line);
  border-radius: var(--faq-radius);
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(198, 255, 62, 0.12), transparent 58%),
    var(--midnight);
  box-shadow: var(--shadow-hard-lg);
}

.page-faq .faq-contact__pitch p {
  margin: 0 0 12px;
  max-width: 64ch;
  font-size: clamp(15px, 1.3vw, 16px);
  line-height: 1.85;
  color: var(--faq-body-text);
}

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

.page-faq .faq-contact__rows {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-contact .contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-contact .contact-key {
  flex: none;
  min-width: 76px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .faq-contact .contact-val {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.4vw, 16px);
  font-weight: 600;
  color: var(--paper-white);
  word-break: break-all;
}

.page-faq .faq-contact .copy-btn {
  margin-left: auto;
  padding: 6px 14px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: transparent;
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 200ms var(--ease), color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-contact .copy-btn:hover,
.page-faq .faq-contact .copy-btn:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--graphite);
}

.page-faq .faq-contact__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 焦点环 ---------- */
.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible,
.page-faq input:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
  }

  .page-faq .faq-contact__pitch {
    grid-column: 1;
  }

  .page-faq .faq-contact__rows {
    grid-column: 1;
  }

  .page-faq .faq-contact__actions {
    grid-column: 2;
    grid-row: 1 / span 2;
    align-content: start;
    justify-content: flex-start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(32px, 5vw, 64px);
  }

  .page-faq .faq-hero__title {
    max-width: 16ch;
  }

  .page-faq .faq-index__list {
    justify-content: center;
    padding-inline: clamp(24px, 4vw, 56px);
  }
}

@media (max-width: 560px) {
  .page-faq .faq-group__head {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-faq .faq-group__no {
    font-size: 20px;
  }

  .page-faq .faq-item__q::after {
    font-size: 17px;
  }

  .page-faq .faq-contact .copy-btn {
    margin-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q::before,
  .page-faq .faq-search__input,
  .page-faq .faq-contact .copy-btn,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }
}
<<<END>>>