.page-faq {
  display: block;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  padding-bottom: clamp(44px, 8vw, 96px);
  overflow-x: hidden;
}

.page-faq .breadcrumb {
  margin-top: clamp(16px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: clamp(18px, 3vw, 30px) 0 clamp(38px, 6vw, 70px);
  padding: clamp(26px, 5vw, 58px) clamp(20px, 4vw, 54px);
  background: var(--ink);
  color: var(--paper);
  border-radius: 34px 6px 34px 6px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -26%;
  right: -20%;
  width: min(520px, 78%);
  aspect-ratio: 1 / 1;
  background: var(--grad);
  clip-path: polygon(42% 0, 100% 0, 100% 100%, 0 56%);
  opacity: 0.9;
  z-index: 0;
  pointer-events: none;
}

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

.page-faq .faq-hero__kicker {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--copper-lite);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.8vw, 44px);
  line-height: 1.14;
  letter-spacing: 0.02em;
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(245, 240, 230, 0.86);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__jump a {
  display: inline-block;
  padding: 9px 15px;
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--paper);
  text-decoration: none;
  background: rgba(245, 240, 230, 0.08);
  border: 1px solid rgba(227, 154, 92, 0.45);
  border-radius: var(--radius-chip);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-hero__jump a:hover,
.page-faq .faq-hero__jump a:focus-visible {
  background: rgba(196, 107, 50, 0.3);
  border-color: var(--copper-lite);
  transform: translateY(-2px);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-section {
  margin-bottom: clamp(44px, 7vw, 84px);
}

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

.page-faq .faq-section__head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(20px, 3vw, 32px);
  padding-top: 18px;
  border-top: 2px solid var(--ink);
}

.page-faq .faq-section__head::before {
  content: "";
  width: 48px;
  height: 4px;
  background: var(--copper);
  border-radius: 2px;
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3.2vw, 30px);
  line-height: 1.25;
  letter-spacing: 0.04em;
}

.page-faq .faq-section__head p {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-faq .faq-sec-code {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--copper);
}

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

.page-faq .qa {
  background: var(--paper-lite);
  border: 1px solid rgba(15, 34, 51, 0.12);
  border-radius: 4px 20px 4px 20px;
  overflow: hidden;
  transition: box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(196, 107, 50, 0.4);
}

.page-faq .qa[open] {
  box-shadow: 0 12px 26px rgba(15, 34, 51, 0.12);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2.1vw, 19px);
  letter-spacing: 0.03em;
  color: var(--ink);
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-num);
  font-size: 18px;
  line-height: 1;
  color: var(--copper);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--copper-lite);
  outline-offset: -2px;
}

.page-faq .qa__idx {
  font-size: 13px;
  color: var(--batch);
}

.page-faq .qa__a {
  padding: 0 18px 18px 46px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-faq .qa__a p {
  margin: 0;
}

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

/* ---------- 分步操作 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0 0 6px;
  padding: 0;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 14px;
  padding-bottom: 24px;
}

.page-faq .step::before {
  content: "";
  position: absolute;
  left: 21px;
  top: 46px;
  bottom: 4px;
  border-left: 1px dashed rgba(15, 34, 51, 0.26);
}

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

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

.page-faq .step__num {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--copper);
  color: #FFF6EC;
  font-family: var(--font-num);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: 12px 3px 12px 3px;
}

.page-faq .step__body {
  padding: 16px 18px 18px;
  background: var(--paper-lite);
  border: 1px solid rgba(15, 34, 51, 0.11);
  border-radius: 20px 4px 20px 4px;
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .step__body:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 22px rgba(15, 34, 51, 0.1);
}

.page-faq .step__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2.2vw, 19px);
  letter-spacing: 0.04em;
  color: var(--ink);
}

.page-faq .step__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

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

.page-faq .step__check {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 12px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--batch);
  cursor: pointer;
}

.page-faq .step__check input {
  width: 16px;
  height: 16px;
  accent-color: var(--verify);
  cursor: pointer;
}

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

.page-faq .step-figure img,
.page-faq .batch-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 编号分段 ---------- */
.page-faq .batch-grid {
  display: grid;
  gap: 22px;
}

.page-faq .batch-demo__act {
  margin: 14px 0 0;
}

.page-faq .batch-demo__act .copy-chip {
  font-size: 12px;
}

.page-faq .seg-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .seg {
  display: grid;
  grid-template-columns: 74px 1fr;
  gap: 12px;
  align-items: baseline;
  padding: 12px 14px;
  background: var(--paper-lite);
  border: 1px solid rgba(15, 34, 51, 0.1);
  border-left: 3px solid var(--ink-3);
  border-radius: 14px 3px 14px 3px;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .seg:hover {
  background: linear-gradient(135deg, rgba(196, 107, 50, 0.16), rgba(22, 52, 78, 0.1));
  border-left-color: var(--copper);
  transform: translateY(-2px);
}

.page-faq .seg__val {
  font-family: var(--font-num);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--copper);
}

.page-faq .seg__meta {
  font-size: 14px;
  line-height: 1.72;
  color: var(--ink-2);
}

.page-faq .seg__meta strong {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-display);
  font-size: 15px;
  letter-spacing: 0.05em;
  color: var(--ink);
}

.page-faq .batch-figure {
  margin: 0;
}

.page-faq .misread {
  display: grid;
  gap: 14px;
  margin-top: 26px;
}

.page-faq .misread__col {
  padding: 18px 20px 20px;
  border: 1px solid transparent;
  border-radius: 18px 4px 18px 4px;
}

.page-faq .misread__col--wrong {
  background: rgba(185, 134, 49, 0.12);
  border-color: rgba(185, 134, 49, 0.45);
}

.page-faq .misread__col--right {
  background: rgba(63, 122, 87, 0.1);
  border-color: rgba(127, 174, 140, 0.55);
}

.page-faq .misread__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.08em;
}

.page-faq .misread__col--wrong .misread__title {
  color: var(--amber);
}

.page-faq .misread__col--right .misread__title {
  color: var(--verify);
}

.page-faq .misread__list {
  margin: 0;
  padding-left: 18px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-faq .misread__list li::marker {
  color: var(--batch);
}

/* ---------- 型号对照 ---------- */
.page-faq .model-grid {
  display: grid;
  gap: 16px;
}

.page-faq .model-panel {
  padding: 22px;
  background: var(--paper-lite);
  border: 1px solid rgba(15, 34, 51, 0.12);
  border-radius: 4px 24px 4px 24px;
}

.page-faq .model-panel h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.06em;
  color: var(--ink);
}

.page-faq .model-steps {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-2);
}

.page-faq .model-steps li::marker {
  font-family: var(--font-num);
  color: var(--copper);
}

.page-faq .model-panel--facts {
  background: var(--ink-2);
  border-color: var(--ink-3);
  color: var(--paper);
}

.page-faq .model-panel--facts h3 {
  color: var(--copper-lite);
}

.page-faq .model-facts {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-faq .model-fact {
  padding-top: 11px;
  border-top: 1px solid rgba(245, 240, 230, 0.18);
}

.page-faq .model-fact:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .model-fact dt {
  margin-bottom: 4px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--copper-lite);
}

.page-faq .model-fact dd {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(245, 240, 230, 0.9);
}

/* ---------- 兜底核对 ---------- */
.page-faq .fallback-grid {
  display: grid;
  gap: 16px;
}

.page-faq .fallback-card {
  padding: 22px;
  background: var(--paper-lite);
  border: 1px solid rgba(15, 34, 51, 0.12);
  border-radius: 24px 4px 24px 4px;
}

.page-faq .fallback-list {
  counter-reset: fb;
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .fallback-list li {
  position: relative;
  padding-left: 36px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-2);
}

.page-faq .fallback-list li::before {
  counter-increment: fb;
  content: counter(fb, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--copper);
}

.page-faq .fallback-list strong {
  color: var(--ink);
}

.page-faq .fallback-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.78;
  color: var(--batch);
}

.page-faq .fallback-card .fallback-note {
  padding-top: 16px;
  border-top: 1px dashed rgba(15, 34, 51, 0.2);
}

.page-faq .fallback-note a {
  color: var(--copper);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .fallback-contact {
  padding: 22px;
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px 24px 4px 24px;
}

.page-faq .fallback-contact h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  letter-spacing: 0.07em;
  color: var(--copper-lite);
}

.page-faq .contact-list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px dashed rgba(245, 240, 230, 0.22);
}

.page-faq .contact-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .contact-list__label {
  width: 100%;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: rgba(245, 240, 230, 0.66);
}

.page-faq .contact-list__value {
  font-family: var(--font-num);
  font-size: 14px;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .fallback-contact .copy-chip {
  font-size: 12px;
}

.page-faq .fallback-contact .fallback-note {
  color: rgba(245, 240, 230, 0.68);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .misread {
    grid-template-columns: 1fr 1fr;
    gap: 18px;
  }

  .page-faq .qa__a {
    padding-left: 58px;
  }
}

@media (min-width: 900px) {
  .page-faq .batch-grid {
    grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
    gap: 30px;
    align-items: start;
  }

  .page-faq .model-grid {
    grid-template-columns: 1.1fr 1fr;
    gap: 24px;
  }

  .page-faq .fallback-grid {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 24px;
  }

  .page-faq .step {
    grid-template-columns: 52px 1fr;
    gap: 18px;
    padding-bottom: 28px;
  }

  .page-faq .step::before {
    left: 25px;
    top: 54px;
  }

  .page-faq .step__num {
    width: 52px;
    height: 52px;
    font-size: 16px;
  }

  .page-faq .step__body {
    padding: 20px 24px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .seg,
  .page-faq .step__body,
  .page-faq .faq-hero__jump a,
  .page-faq .qa {
    transition: none;
  }

  .page-faq .seg:hover,
  .page-faq .step__body:hover,
  .page-faq .faq-hero__jump a:hover {
    transform: none;
  }
}