.page-faq {
  --faq-hair: rgba(201, 162, 39, 0.42);
  --faq-wash: rgba(201, 162, 39, 0.09);
  --faq-shadow: 0 14px 34px -22px rgba(17, 17, 17, 0.34);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--header-h) + clamp(48px, 8vw, 92px)) var(--gutter) clamp(38px, 6vw, 68px);
  background:
    radial-gradient(circle at 86% 8%, rgba(201, 162, 39, 0.14), transparent 44%),
    linear-gradient(180deg, var(--paper) 0%, var(--paper) 62%, rgba(233, 226, 210, 0.6) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--rule-gold) 18%, var(--rule-gold) 82%, transparent);
}

.page-faq .faq-hero .container {
  max-width: var(--shell-max);
  margin: 0 auto;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.2em;
  color: var(--gold-deep);
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  max-width: 17em;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(29px, 4.6vw, 50px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero .lede {
  max-width: 46em;
  margin: 0;
  font-size: clamp(15.5px, 1.3vw, 17px);
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: clamp(26px, 4vw, 36px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chips li {
  padding: 6px 13px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.66);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--stone);
}

/* ---------- 三步流程 ---------- */
.page-faq .faq-steps {
  padding: clamp(52px, 7vw, 96px) 0 clamp(44px, 6vw, 80px);
}

.page-faq .faq-steps .container {
  max-width: var(--shell-max);
  margin: 0 auto;
}

.page-faq .faq-steps .section-head {
  max-width: 52em;
  margin-bottom: clamp(34px, 5vw, 56px);
}

.page-faq .step-row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .step-item {
  position: relative;
  padding: 0;
}

.page-faq .step-num {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border: 1px solid var(--gold);
  border-radius: 50%;
  background: var(--paper-warm);
  color: var(--gold-deep);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-faq .step-num::after {
  content: "";
  position: absolute;
  inset: 5px;
  border: 1px dashed rgba(201, 162, 39, 0.34);
  border-radius: 50%;
}

.page-faq .step-title {
  margin: 18px 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(18px, 1.6vw, 21px);
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .step-item p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .step-figure {
  margin: clamp(36px, 5vw, 58px) auto 0;
  max-width: 1000px;
}

.page-faq .media img,
.page-faq .compare-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
}

.page-faq .media-caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-body {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: clamp(44px, 6vw, 84px) var(--gutter) clamp(60px, 8vw, 116px);
}

.page-faq .split {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 5vw, 60px);
}

.page-faq .aside-panel {
  padding-top: 16px;
  border-top: 2px solid var(--gold);
}

.page-faq .toc-title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
}

.page-faq .toc {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .toc a {
  display: block;
  padding: 9px 0 9px 15px;
  border-left: 1px solid var(--rule);
  font-size: 15px;
  line-height: 1.5;
  color: var(--graphite);
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .toc a:hover,
.page-faq .toc a:focus-visible {
  color: var(--gold-deep);
  border-left-color: var(--gold);
  background: var(--faq-wash);
  outline: none;
}

.page-faq .toc a.is-current {
  color: var(--cinnabar);
  border-left-color: var(--cinnabar);
  font-weight: 600;
}

/* ---------- 章节与问答 ---------- */
.page-faq .faq-block {
  padding-bottom: clamp(36px, 5vw, 60px);
  margin-bottom: clamp(36px, 5vw, 62px);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-block:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: none;
}

.page-faq .faq-block .section-head {
  max-width: 50em;
}

.page-faq .faq-block .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--gold-deep);
}

.page-faq .faq-block .section-title {
  margin: 0 0 14px;
  font-family: var(--font-serif);
  font-weight: 900;
  font-size: clamp(22px, 2.5vw, 30px);
  line-height: 1.32;
  color: var(--ink);
}

.page-faq .faq-block .lede {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .compare-figure {
  margin: clamp(26px, 4vw, 38px) 0 clamp(28px, 4vw, 40px);
}

.page-faq .qa-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: clamp(26px, 4vw, 38px);
}

.page-faq .qa-item {
  border: 1px solid var(--rule);
  border-left: 2px solid var(--faq-hair);
  border-radius: var(--radius);
  background: #fff;
  transition: border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .qa-item:hover {
  border-left-color: var(--gold);
}

.page-faq .qa-item[open] {
  border-left-color: var(--gold);
  box-shadow: var(--faq-shadow);
}

.page-faq .qa-item summary {
  position: relative;
  display: block;
  padding: 16px 46px 16px 18px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(16px, 1.4vw, 17.5px);
  line-height: 1.55;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-item summary::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-right: 1.6px solid var(--gold-deep);
  border-bottom: 1.6px solid var(--gold-deep);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 0.25s ease;
}

.page-faq .qa-item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
}

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

.page-faq .qa-item .fold-body {
  padding: 0 18px 18px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
}

.page-faq .qa-item .fold-body p {
  margin: 0 0 12px;
}

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

.page-faq .alert {
  display: flex;
  gap: 12px;
  align-items: baseline;
  padding: 11px 14px;
  border-left: 2px solid var(--cinnabar);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(178, 34, 34, 0.06);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-faq .alert-key {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cinnabar);
}

/* ---------- 金线时间轴 ---------- */
.page-faq .timeline {
  position: relative;
  margin: clamp(26px, 4vw, 38px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .timeline::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 14px;
  bottom: 16px;
  width: 1px;
  background: linear-gradient(180deg, var(--faq-hair), rgba(201, 162, 39, 0.14));
}

.page-faq .tl-item {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 16px;
  padding-bottom: 26px;
}

.page-faq .tl-item:last-child {
  padding-bottom: 0;
}

.page-faq .tl-num {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--faq-hair);
  border-radius: 50%;
  background: var(--paper);
  color: var(--gold-deep);
  font-size: 13.5px;
  font-weight: 700;
  letter-spacing: 0.05em;
}

.page-faq .tl-body h3 {
  margin: 8px 0 8px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(16px, 1.4vw, 18px);
  line-height: 1.45;
  color: var(--ink);
}

.page-faq .tl-body p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--graphite);
}

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

/* ---------- 收尾动作 ---------- */
.page-faq .faq-next {
  margin-top: clamp(30px, 4vw, 44px);
  padding: clamp(22px, 3vw, 30px);
  border: 1px solid var(--rule);
  border-top: 2px solid var(--gold);
  border-radius: 0 0 var(--radius) var(--radius);
  background: var(--paper-warm);
}

.page-faq .faq-next-lead {
  margin: 0 0 16px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(17px, 1.5vw, 19px);
  color: var(--ink);
}

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

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-chips {
    gap: 10px;
  }

  .page-faq .qa-item summary {
    padding: 18px 52px 18px 22px;
  }

  .page-faq .qa-item .fold-body {
    padding: 0 22px 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .step-row {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
  }

  .page-faq .step-row::before {
    content: "";
    position: absolute;
    top: 26px;
    left: 8%;
    right: 8%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--faq-hair) 10%, var(--faq-hair) 90%, transparent);
  }

  .page-faq .step-item {
    padding: 0 30px;
  }

  .page-faq .step-item:first-child {
    padding-left: 0;
  }

  .page-faq .step-item:last-child {
    padding-right: 0;
  }
}

@media (min-width: 981px) {
  .page-faq .split {
    grid-template-columns: minmax(196px, 3fr) minmax(0, 9fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero h1 {
    max-width: 15em;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item,
  .page-faq .qa-item summary::after,
  .page-faq .toc a {
    transition: none;
  }
}
</main>