.page-faq {
  --faq-radius: 0px;
  --faq-index-top: 112px;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 6vw, 58px) 0 clamp(28px, 5vw, 52px);
  border-bottom: var(--bw) solid var(--c-line);
  background:
    radial-gradient(880px 380px at 84% -14%, rgba(51, 242, 192, 0.17), transparent 62%),
    radial-gradient(520px 300px at 6% 108%, rgba(255, 179, 92, 0.1), transparent 68%),
    linear-gradient(180deg, rgba(11, 42, 32, 0.78), rgba(6, 26, 20, 0.2) 72%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(51, 242, 192, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(51, 242, 192, 0.055) 1px, transparent 1px);
  background-size: 54px 54px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.95), transparent 88%);
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.8vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  text-wrap: balance;
}

.page-faq .faq-hero__accent {
  color: var(--c-cyan);
  display: inline-block;
  position: relative;
}

.page-faq .faq-hero__accent::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  height: 6px;
  background: linear-gradient(90deg, rgba(51, 242, 192, 0.42), rgba(51, 242, 192, 0));
  z-index: -1;
}

.page-faq .faq-hero .lede {
  max-width: 62ch;
  margin: 0;
  color: var(--c-text);
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero__card {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 20px 20px 22px;
  border: var(--bw) solid var(--c-cyan);
  background:
    linear-gradient(158deg, rgba(51, 242, 192, 0.12), rgba(11, 42, 32, 0.94) 56%);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-hero__card-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-amber);
}

.page-faq .faq-hero__card-title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(19px, 3vw, 23px);
  line-height: 1.4;
  color: var(--c-paper);
}

.page-faq .faq-hero__card-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--c-text);
}

.page-faq .faq-hero__card-link {
  justify-self: start;
  margin-top: 4px;
  padding-bottom: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 2px solid rgba(51, 242, 192, 0.5);
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-hero__card-link:hover,
.page-faq .faq-hero__card-link:focus-visible {
  color: var(--c-cyan-hi);
  border-color: var(--c-cyan-hi);
}

/* ---------- 路径 ---------- */
.page-faq .faq-path {
  border-bottom: var(--bw) solid var(--c-line);
}

.page-faq .faq-path__steps {
  list-style: none;
  margin: 0 0 clamp(24px, 4vw, 38px);
  padding: 0;
  display: grid;
  border: var(--bw) solid var(--c-line);
  background: var(--c-panel);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-path__step {
  display: grid;
  gap: 10px;
  padding: 20px;
  border-bottom: var(--bw) solid var(--c-line);
}

.page-faq .faq-path__step:last-child {
  border-bottom: 0;
}

.page-faq .faq-path__step-no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--c-amber);
}

.page-faq .faq-path__step-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.35;
  color: var(--c-paper);
}

.page-faq .faq-path__step-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-text);
}

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

.page-faq .faq-path__figure .figure__frame {
  border: var(--bw) solid var(--c-line);
  background:
    repeating-linear-gradient(135deg, rgba(51, 242, 192, 0.05) 0 2px, transparent 2px 12px),
    var(--c-panel);
}

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

/* ---------- 工作台 ---------- */
.page-faq .faq-desk {
  border-bottom: var(--bw) solid var(--c-line);
}

.page-faq .faq-desk__grid {
  display: grid;
  gap: clamp(22px, 4vw, 34px);
}

.page-faq .faq-index {
  padding: 16px 16px 18px;
  border: var(--bw) solid var(--c-line);
  border-left: 4px solid var(--c-cyan);
  background: linear-gradient(180deg, rgba(51, 242, 192, 0.07), var(--c-panel) 42%);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 10px 10px;
  font-size: 14.5px;
  color: var(--c-text);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background 0.18s var(--ease), color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--c-amber);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(51, 242, 192, 0.09);
  border-left-color: var(--c-cyan-hi);
  color: var(--c-paper);
}

.page-faq .faq-index__link.is-active {
  background: rgba(51, 242, 192, 0.1);
  border-left-color: var(--c-cyan);
  color: var(--c-paper);
}

.page-faq .faq-index__hint {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--c-line);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-faq .faq-group {
  scroll-margin-top: 120px;
  margin-bottom: clamp(30px, 5vw, 46px);
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 14px;
  padding: 12px 0 12px;
  border-top: 3px solid var(--c-cyan);
  border-bottom: var(--bw) solid var(--c-line);
  margin-bottom: 16px;
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--c-amber);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(20px, 3.6vw, 27px);
  line-height: 1.35;
  color: var(--c-paper);
}

.page-faq .faq-item {
  margin-bottom: 10px;
  border: var(--bw) solid var(--c-line);
  background: var(--c-panel);
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--c-cyan);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--c-paper);
  transition: background 0.18s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  background: rgba(51, 242, 192, 0.06);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--c-cyan-hi);
  outline-offset: 2px;
}

.page-faq .faq-item__no {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--c-cyan);
}

.page-faq .faq-item__q::after {
  content: "+";
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--c-amber);
  transition: color 0.18s var(--ease);
}

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

.page-faq .faq-item__a {
  padding: 14px 16px 18px;
  border-top: 1px dashed rgba(51, 242, 192, 0.28);
  background: linear-gradient(180deg, rgba(51, 242, 192, 0.05), transparent 62%);
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-text);
}

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

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

.page-faq .faq-item__a a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 192, 0.45);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--c-cyan-hi);
  border-color: var(--c-cyan-hi);
}

.page-faq .faq-ver {
  font-family: var(--font-mono);
  font-size: 0.95em;
  letter-spacing: 0.02em;
  color: var(--c-cyan);
}

.page-faq .faq-group__figure {
  margin: 18px 0 0;
}

.page-faq .faq-group__figure .figure__frame {
  border: var(--bw) solid var(--c-line);
  background:
    repeating-linear-gradient(135deg, rgba(51, 242, 192, 0.05) 0 2px, transparent 2px 12px),
    var(--c-bg);
}

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

/* ---------- 收束 ---------- */
.page-faq .faq-close {
  scroll-margin-top: 120px;
  padding-bottom: clamp(40px, 7vw, 78px);
}

.page-faq .faq-close__panel {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 5vw, 44px);
  border: var(--bw) solid var(--c-cyan);
  background:
    radial-gradient(560px 240px at 90% -10%, rgba(51, 242, 192, 0.18), transparent 70%),
    linear-gradient(168deg, rgba(11, 42, 32, 0.98), rgba(6, 26, 20, 0.94));
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-close__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 4vw, 31px);
  line-height: 1.32;
  color: var(--c-paper);
}

.page-faq .faq-close__text p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-faq .faq-close__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.page-faq .faq-close__note {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--c-muted);
}

.page-faq .faq-close__note a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(51, 242, 192, 0.45);
}

.page-faq .faq-close__note a:hover,
.page-faq .faq-close__note a:focus-visible {
  color: var(--c-cyan-hi);
  border-color: var(--c-cyan-hi);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) 264px;
    align-items: start;
  }

  .page-faq .faq-hero__card {
    margin-top: 8px;
  }

  .page-faq .faq-path__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-path__step {
    border-bottom: 0;
    border-right: var(--bw) solid var(--c-line);
    padding: 22px 20px 24px;
  }

  .page-faq .faq-path__step:last-child {
    border-right: 0;
  }

  .page-faq .faq-item__q {
    padding: 17px 20px;
    font-size: 16px;
  }

  .page-faq .faq-item__a {
    padding: 16px 20px 20px;
    font-size: 15px;
  }

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

  .page-faq .faq-close__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-desk__grid {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 48px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-index-top);
  }

  .page-faq .faq-hero h1 {
    letter-spacing: -0.025em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-hero__card-link {
    transition: none;
  }
}
<<<END>>>