.page-faq {
  --faq-line: rgba(11, 52, 56, 0.2);
  --faq-line-soft: rgba(11, 52, 56, 0.1);
  background: var(--paper-hi);
  color: var(--ink-900);
  font-family: var(--font-body);
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 20px 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: rgba(11, 52, 56, 0.66);
}

.page-faq .faq-crumb a {
  color: var(--ink-800);
  text-decoration: none;
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  color: var(--signal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background: var(--ink-900);
  color: var(--paper);
  padding: clamp(28px, 5vw, 60px) 0 clamp(40px, 6vw, 84px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  right: -20%;
  top: -30%;
  width: 72%;
  height: 165%;
  background: linear-gradient(158deg, var(--ink-800), var(--ink-700));
  transform: rotate(-9deg);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(
    90deg,
    var(--signal) 0 16%,
    var(--amber) 16% 24%,
    transparent 24%
  );
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: end;
}

.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--amber);
}

.page-faq .faq-hero__kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  background: var(--signal);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 7.4vw, 68px);
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__title em {
  display: inline-block;
  font-style: normal;
  color: var(--amber);
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  margin: 20px 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.88;
  color: rgba(244, 234, 217, 0.86);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

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

.page-faq .faq-hero__figure .figure__frame {
  background: var(--ink-800);
  border: 1px solid rgba(244, 234, 217, 0.28);
}

.page-faq .faq-hero__figure .figure__cap {
  color: rgba(244, 234, 217, 0.7);
  font-family: var(--font-display);
  font-size: 12.5px;
}

/* ---------- 主区 ---------- */

.page-faq .faq-body {
  display: grid;
  gap: clamp(22px, 3.5vw, 46px);
  padding-top: clamp(28px, 5vw, 58px);
  padding-bottom: clamp(36px, 6vw, 80px);
}

/* ---------- 左侧时刻表目录 ---------- */

.page-faq .faq-rail {
  border: 1px solid var(--faq-line);
  background: var(--paper);
  padding: 16px 14px 18px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--ochre);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
  counter-reset: none;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--ink-900);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background var(--dur), border-color var(--dur), color var(--dur);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: var(--paper-hi);
  border-left-color: var(--signal);
  color: var(--ink-800);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 1px;
}

.page-faq .faq-rail__code {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ochre);
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-line);
  font-size: 12.5px;
  line-height: 1.7;
  color: rgba(11, 52, 56, 0.68);
}

/* ---------- 答案区 ---------- */

.page-faq .faq-stack {
  display: flex;
  flex-direction: column;
  gap: clamp(28px, 4.5vw, 54px);
  min-width: 0;
}

.page-faq .faq-block {
  scroll-margin-top: 24px;
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink-900);
}

.page-faq .faq-block__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--wine);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.24;
  letter-spacing: -0.01em;
}

.page-faq .faq-block__verdict {
  margin: 18px 0 22px;
  padding: 12px 16px 12px 18px;
  background: var(--paper);
  border-left: 4px solid var(--signal);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--ink-800);
}

.page-faq .faq-list--tight {
  margin-top: 18px;
}

.page-faq .faq-figure {
  margin: 18px 0 22px;
}

.page-faq .faq-figure .figure__frame {
  background: var(--ink-800);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-figure .figure__cap {
  color: rgba(11, 52, 56, 0.66);
  font-size: 12.5px;
}

/* ---------- 手风琴 ---------- */

.page-faq .faq-item {
  margin-bottom: 10px;
  background: var(--paper-hi);
  border: 1px solid var(--faq-line);
  transition: border-color var(--dur), box-shadow var(--dur);
}

.page-faq .faq-item[open] {
  border-color: var(--ochre);
  box-shadow: 4px 4px 0 rgba(154, 90, 53, 0.14);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.62;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
  transition: background var(--dur);
}

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

.page-faq .faq-item__q::before {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.5;
  color: var(--signal);
  transition: color var(--dur);
}

.page-faq .faq-item[open] .faq-item__q::before {
  content: "–";
  color: var(--wine);
}

.page-faq .faq-item__q:hover {
  background: rgba(242, 106, 46, 0.07);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: -3px;
}

.page-faq .faq-item__a {
  padding: 0 16px 16px 44px;
  font-size: 15px;
  line-height: 1.86;
  color: rgba(11, 52, 56, 0.86);
}

.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(--ink-800);
  text-decoration: underline;
  text-decoration-color: var(--signal);
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--signal);
}

/* ---------- 步骤列表 ---------- */

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 0 0 14px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: flex;
  gap: 10px;
  align-items: baseline;
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  flex: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--ochre);
}

/* ---------- 复制按钮 ---------- */

.page-faq .copy-btn {
  display: inline-block;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ink-800);
  background: transparent;
  border: 1px solid var(--faq-line);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color var(--dur), color var(--dur), background var(--dur);
}

.page-faq .copy-btn:hover {
  border-color: var(--signal);
  color: var(--signal);
}

.page-faq .copy-btn:focus-visible {
  outline: 2px solid var(--signal);
  outline-offset: 2px;
}

/* ---------- 末尾联系块 ---------- */

.page-faq .faq-contact {
  display: grid;
  gap: 18px;
  padding: 22px;
  background: var(--ink-900);
  color: var(--paper);
}

.page-faq .faq-contact__cell {
  min-width: 0;
}

.page-faq .faq-contact__k {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-faq .faq-contact__v {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.7;
  word-break: break-word;
}

.page-faq .faq-contact .copy-btn {
  color: rgba(244, 234, 217, 0.9);
  border-color: rgba(244, 234, 217, 0.32);
}

.page-faq .faq-contact .copy-btn:hover {
  border-color: var(--amber);
  color: var(--amber);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq .faq-contact {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .page-faq .faq-rail__list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2px 12px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.85fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 24px;
  }

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

  .page-faq .faq-item__a {
    padding-left: 46px;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-item__a {
    padding-left: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-rail__link,
  .page-faq .copy-btn {
    transition: none;
  }
}