.page-faq {
  --faq-index: 244px;
  --faq-gap: clamp(24px, 3.4vw, 44px);
  --faq-scroll: 96px;
  color: var(--paper);
  padding-bottom: clamp(48px, 7vw, 96px);
  scroll-behavior: smooth;
}

.page-faq .breadcrumbs {
  padding-top: clamp(16px, 2.6vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  align-items: end;
  padding: clamp(20px, 3.6vw, 44px) 0 clamp(28px, 4.4vw, 56px);
  border-bottom: 1px solid var(--line);
  background-image:
    radial-gradient(circle at 86% 8%, rgba(77, 227, 224, 0.14), transparent 46%),
    radial-gradient(circle at 4% 92%, rgba(246, 196, 83, 0.08), transparent 52%);
  background-repeat: no-repeat;
}

.page-faq .faq-hero-copy .eyebrow {
  margin: 0 0 14px;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(31px, 5.2vw, 58px);
  line-height: 1.07;
  letter-spacing: -0.035em;
  max-width: 22ch;
}

.page-faq .faq-hero .lede {
  margin: clamp(16px, 2.2vw, 24px) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: rgba(233, 242, 245, 0.84);
}

.page-faq .faq-track {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-track a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  font-size: 13px;
  line-height: 1.2;
  color: var(--paper);
  text-decoration: none;
  background: var(--console);
  border: 1px solid var(--line);
  clip-path: var(--chamfer-btn);
  transition: border-color var(--fast) var(--ease), color var(--fast) var(--ease), background-color var(--fast) var(--ease);
}

.page-faq .faq-track a .mono {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-track a:hover,
.page-faq .faq-track a:focus-visible {
  border-color: var(--cyan);
  color: var(--ice);
  background: #0f2740;
}

.page-faq .faq-track a:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-faq .faq-hero-media {
  margin: 0;
  border: 1px solid var(--line);
  clip-path: var(--chamfer-panel);
  background: var(--console);
}

.page-faq .faq-hero-media img,
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(28px, 4vw, 52px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  background:
    linear-gradient(160deg, rgba(13, 31, 51, 0.96), rgba(11, 43, 51, 0.9));
  clip-path: var(--chamfer-panel);
}

.page-faq .faq-index > .label {
  margin: 0 0 12px;
  color: var(--cyan);
}

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

.page-faq .index-list li + li {
  border-top: 1px solid rgba(39, 68, 90, 0.7);
}

.page-faq .index-list a {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 10px;
  align-items: baseline;
  padding: 10px 8px 10px 10px;
  border-left: 2px solid transparent;
  color: var(--paper);
  text-decoration: none;
  font-size: 14px;
  transition: border-color var(--fast) var(--ease), background-color var(--fast) var(--ease), color var(--fast) var(--ease);
}

.page-faq .index-list a:hover,
.page-faq .index-list a:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(77, 227, 224, 0.08);
  color: var(--ice);
}

.page-faq .index-list a:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-faq .index-num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .index-count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: rgba(233, 242, 245, 0.5);
  white-space: nowrap;
}

.page-faq .index-help {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--line);
}

.page-faq .index-help-title {
  margin: 0 0 6px;
  font-size: 14px;
  font-weight: 700;
  color: var(--gold);
}

.page-faq .index-help-text {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(233, 242, 245, 0.72);
}

.page-faq .index-help .btn {
  display: block;
  width: 100%;
  text-align: center;
}

.page-faq .index-help .copy-btn {
  display: block;
  width: 100%;
  margin-top: 8px;
}

/* ---------- 答案区 ---------- */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: var(--faq-scroll);
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(36px, 5vw, 62px);
}

.page-faq .faq-block-head {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding-bottom: 12px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-block-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-block-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(19px, 2.4vw, 27px);
  line-height: 1.24;
  letter-spacing: -0.025em;
  color: var(--paper);
}

.page-faq .faq-block-note {
  margin: 0 0 18px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(233, 242, 245, 0.62);
  max-width: 60ch;
}

.page-faq .faq-block--spec .faq-block-head {
  border-bottom-color: rgba(246, 196, 83, 0.45);
}

.page-faq .faq-block--spec .faq-block-num {
  color: var(--gold);
}

.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  background: var(--console);
  clip-path: var(--chamfer-panel);
}

.page-faq .faq-figure figcaption {
  padding: 9px 14px 11px;
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: rgba(233, 242, 245, 0.6);
  border-top: 1px solid var(--line);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  margin-bottom: 10px;
  border: 1px solid var(--line);
  background: var(--console);
  transition: border-color var(--fast) var(--ease), background-color var(--fast) var(--ease);
}

.page-faq .qa:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa:hover {
  border-color: rgba(77, 227, 224, 0.55);
}

.page-faq .qa[open] {
  border-color: var(--cyan);
  background: #0a1c2d;
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--cyan);
}

.page-faq .qa summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
  transition: color var(--fast) var(--ease);
}

.page-faq .qa[open] summary::after {
  content: "–";
  color: var(--gold);
}

.page-faq .qa-num {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(77, 227, 224, 0.75);
}

.page-faq .qa-title {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .qa[open] .qa-title {
  color: var(--ice);
}

.page-faq .qa-body {
  padding: 14px 16px 18px;
  border-top: 1px solid rgba(39, 68, 90, 0.8);
}

.page-faq .qa-body p {
  margin: 0 0 10px;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.78;
  color: rgba(233, 242, 245, 0.86);
}

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

.page-faq .qa--featured {
  border-left: 3px solid var(--cyan);
}

.page-faq .qa--alert {
  border-left: 3px solid var(--coral);
}

.page-faq .qa--alert .qa-num {
  color: var(--coral);
}

/* 等宽参数行 */
.page-faq .qa-params {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 22px;
  margin: 14px 0 0;
  padding: 11px 13px;
  background: rgba(77, 227, 224, 0.07);
  border-left: 2px solid var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  color: rgba(233, 242, 245, 0.8);
}

.page-faq .qa-params span {
  display: inline-flex;
  gap: 7px;
}

.page-faq .qa-params b {
  font-weight: 600;
  color: var(--ice);
}

.page-faq .qa--alert .qa-params {
  background: rgba(255, 107, 94, 0.09);
  border-left-color: var(--coral);
}

.page-faq .qa--alert .qa-params b {
  color: #ffb8b1;
}

/* 行内关键词 */
.page-faq .kw {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 1px 6px;
  color: var(--ice);
  background: rgba(77, 227, 224, 0.12);
}

.page-faq .kw--gold {
  color: var(--gold);
  background: rgba(246, 196, 83, 0.13);
  border-bottom: 1px solid var(--gold);
}

/* ---------- 收束条 ---------- */
.page-faq .faq-cta {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: clamp(36px, 5vw, 62px);
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  background:
    linear-gradient(120deg, rgba(74, 31, 61, 0.55), rgba(13, 31, 51, 0.94) 62%);
  clip-path: var(--chamfer-panel);
}

.page-faq .faq-cta .label {
  margin: 0 0 8px;
  color: var(--gold);
}

.page-faq .faq-cta-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2.2vw, 23px);
  line-height: 1.42;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
  }

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

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

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index) minmax(0, 1fr);
    align-items: start;
  }

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

  .page-faq .qa summary {
    padding: 17px 20px;
  }

  .page-faq .qa-body {
    padding: 16px 20px 20px;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-track a {
    padding: 7px 12px;
    font-size: 12.5px;
  }

  .page-faq .qa summary {
    grid-template-columns: auto minmax(0, 1fr);
    gap: 8px 10px;
    padding: 14px 13px;
  }

  .page-faq .qa summary::after {
    grid-column: 2;
    justify-self: end;
    margin-top: -4px;
  }

  .page-faq .qa-title {
    font-size: 14.5px;
  }

  .page-faq .qa-body {
    padding: 12px 13px 16px;
  }

  .page-faq .qa-params {
    font-size: 11.5px;
    gap: 7px 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq {
    scroll-behavior: auto;
  }

  .page-faq .qa,
  .page-faq .index-list a,
  .page-faq .faq-track a {
    transition: none;
  }
}
<<<END>>>