.page-faq {
  background: var(--cream);
  color: var(--brown);
}

.page-faq .breadcrumb {
  margin-top: 14px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-block: clamp(18px, 3vw, 30px) clamp(30px, 4.5vw, 58px);
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
}

.page-faq .faq-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--teal);
}

.page-faq .faq-kicker::before {
  content: "";
  flex: none;
  width: 26px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 4.4vw, 52px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--abyss);
}

.page-faq .faq-lede {
  margin-top: 16px;
  max-width: 40ch;
}

.page-faq .faq-hero-meta {
  margin: 20px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--teal);
}

.page-faq .faq-freecard {
  position: relative;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--cyan);
  border-radius: var(--r-lg);
  background: var(--abyss);
  color: var(--cream);
  box-shadow: var(--shadow-card);
}

.page-faq .faq-freecard-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-faq .faq-freecard-value {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(30px, 4.2vw, 40px);
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--cream);
}

.page-faq .faq-freecard-text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 240, 230, .84);
}

.page-faq .faq-freecard-link {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-freecard-link:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 26px 0 0;
}

.page-faq .faq-figure--tree {
  margin-top: 24px;
}

.page-faq .figure-media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
  border: 1px solid var(--slate);
  background: var(--cool);
}

/* ---------- 检索三步 ---------- */

.page-faq .step-flow {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--slate);
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--slate);
}

.page-faq .step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  background: var(--abyss);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
}

.page-faq .step-title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--abyss);
}

.page-faq .step-text {
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--brown);
}

.page-faq .step-scope {
  margin: 12px 0 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--teal);
}

/* ---------- 目录层级 ---------- */

.page-faq .tree {
  margin-top: 26px;
  padding: clamp(16px, 2.6vw, 28px);
  border: 1px solid var(--slate);
  border-radius: var(--r-md);
  background: rgba(255, 255, 255, .5);
}

.page-faq .tree-root {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding-bottom: 16px;
  border-bottom: 1px dashed var(--slate);
}

.page-faq .tree-code {
  display: inline-block;
  padding: 3px 8px;
  border-radius: var(--r-sm);
  background: var(--teal);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  line-height: 1.5;
}

.page-faq .tree-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  color: var(--abyss);
}

.page-faq .tree-count,
.page-faq .tree-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--teal);
}

.page-faq .tree-count {
  margin-left: auto;
}

.page-faq .tree-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .tree-branch {
  padding-left: 14px;
  border-left: 2px solid var(--slate);
}

.page-faq .tree-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.page-faq .tree-leaf-list {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .tree-leaf {
  padding: 4px 11px;
  border: 1px solid var(--slate);
  border-radius: 999px;
  background: var(--cool);
  font-size: 13px;
  line-height: 1.6;
  color: var(--brown);
}

.page-faq .faq-tree-note {
  margin: 24px 0 0;
  max-width: 48ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--brown);
}

/* ---------- 检索与费用边界 ---------- */

.page-faq .faq-boundary {
  background: var(--abyss);
  color: var(--cream);
}

.page-faq .faq-eyebrow--dark {
  color: var(--cyan);
}

.page-faq .faq-title--dark {
  color: var(--cream);
}

.page-faq .faq-note--dark {
  color: rgba(245, 240, 230, .76);
}

.page-faq .boundary-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 28px;
}

.page-faq .boundary-col {
  padding: 20px 22px;
  border: 1px solid rgba(245, 240, 230, .16);
  border-radius: var(--r-md);
  background: rgba(245, 240, 230, .045);
}

.page-faq .boundary-col--free {
  border-color: rgba(35, 211, 211, .58);
}

.page-faq .boundary-col--cost {
  border-color: rgba(255, 122, 60, .52);
}

.page-faq .boundary-col h3 {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .02em;
}

.page-faq .boundary-col--free h3 {
  color: var(--cyan);
}

.page-faq .boundary-col--cost h3 {
  color: var(--orange);
}

.page-faq .boundary-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .boundary-list li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 240, 230, .86);
}

.page-faq .boundary-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 7px;
  height: 1px;
  background: currentColor;
  opacity: .7;
}

/* ---------- 问答 ---------- */

.page-faq .faq-jump {
  margin-top: 22px;
}

.page-faq .faq-jump .tag {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  text-decoration: none;
}

.page-faq .faq-jump .tag:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .qa-group {
  margin-top: clamp(32px, 4.5vw, 52px);
  scroll-margin-top: 96px;
}

.page-faq .qa-group-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--abyss);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 19px;
  letter-spacing: -0.005em;
  color: var(--abyss);
}

.page-faq .qa-group-title .mono {
  padding: 3px 8px;
  border-radius: var(--r-sm);
  background: var(--teal);
  color: var(--cream);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: .1em;
}

.page-faq .qa-group-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .05em;
  color: var(--teal);
}

.page-faq .qa {
  border-bottom: 1px solid var(--slate);
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: start;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  border-radius: var(--r-sm);
}

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

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.65;
  color: var(--orange);
}

.page-faq .qa[open] > summary::after {
  content: "−";
}

.page-faq .qa > summary:hover .qa-q {
  color: var(--teal);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .qa-num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--teal);
}

.page-faq .qa-q {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16.5px;
  line-height: 1.65;
  color: var(--abyss);
  transition: color .2s ease;
}

.page-faq .qa-body {
  padding: 0 4px 18px 12px;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--brown);
}

/* ---------- 反馈 ---------- */

.page-faq .checklist {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
}

.page-faq .checklist li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--slate);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--brown);
}

.page-faq .checklist li:last-child {
  border-bottom: 1px solid var(--slate);
}

.page-faq .checklist .mono {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--teal);
}

.page-faq .faq-contact-card {
  margin-top: 28px;
  padding: 20px 22px;
  border: 1px solid var(--slate);
  border-left: 4px solid var(--orange);
  border-radius: var(--r-md);
  background: var(--cream);
}

.page-faq .faq-contact-title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: .02em;
  color: var(--abyss);
}

.page-faq .faq-contact-line {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--abyss);
}

.page-faq .faq-contact-note {
  margin: 12px 0 0;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--brown);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .step {
    grid-template-columns: 54px minmax(0, 1fr);
    gap: 22px;
    padding: 24px 0;
  }

  .page-faq .step::before {
    content: "";
    position: absolute;
    left: 20px;
    top: 46px;
    bottom: -24px;
    width: 1px;
    background: var(--cyan);
    opacity: .45;
  }

  .page-faq .step:last-child::before {
    display: none;
  }

  .page-faq .qa-body {
    padding: 0 4px 22px 58px;
  }
}

@media (min-width: 780px) {
  .page-faq .boundary-split {
    grid-template-columns: 1fr 1fr;
    gap: 22px;
  }
}

@media (min-width: 860px) {
  .page-faq .tree-list {
    grid-template-columns: 1fr 1fr;
    gap: 16px 26px;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, .85fr);
    gap: clamp(32px, 4.5vw, 60px);
  }

  .page-faq .faq-freecard {
    margin-top: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-q {
    transition: none;
  }
}
<<<END>>>