.page-faq {
  --faq-gap: clamp(16px, 3vw, 32px);
  --faq-rule: 1px solid var(--line);
  --faq-rule-soft: 1px solid var(--line-soft);
  display: block;
}

/* ---------- 面包屑 ---------- */
.page-faq .crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--violet);
}
.page-faq .crumb__link {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.page-faq .crumb__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--line-cyan);
}
.page-faq .crumb__now {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 4vw, 38px) 0 clamp(24px, 4vw, 46px);
  border-bottom: var(--faq-rule);
  background:
    radial-gradient(120% 90% at 12% 0%, rgba(63, 224, 208, 0.1), transparent 62%),
    linear-gradient(180deg, rgba(20, 29, 46, 0.92), var(--ink));
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.7;
  pointer-events: none;
}
.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}
.page-faq .faq-hero__title {
  margin: 10px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 54px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--paper);
}
.page-faq .faq-hero .lead {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: clamp(14px, 1.7vw, 16px);
  line-height: 1.75;
  color: var(--stone);
}

/* 回复时效状态条 */
.page-faq .faq-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 12px;
  margin: 0;
  padding: 12px 14px;
  border: 1px solid var(--line-warm);
  border-radius: var(--radius);
  background: rgba(255, 138, 61, 0.08);
  font-size: 14px;
  color: var(--paper);
  cursor: default;
}
.page-faq .faq-status__dot {
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 138, 61, 0.16);
}
.page-faq .faq-status__time {
  margin-left: auto;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

/* 页内索引 */
.page-faq .faq-jump {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--faq-rule-soft);
}
.page-faq .faq-jump li {
  border-bottom: var(--faq-rule-soft);
}
.page-faq .faq-jump__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0;
  font-size: 13px;
  color: var(--stone);
  text-decoration: none;
  transition: color 0.15s ease, transform 0.15s ease;
}
.page-faq .faq-jump__link .mono {
  font-size: 11px;
  color: var(--violet);
}
.page-faq .faq-jump__link:hover {
  color: var(--cyan);
  transform: translateX(2px);
}

/* ---------- 通用区块 ---------- */
.page-faq .faq-sec {
  padding: clamp(28px, 5vw, 56px) 0;
  border-top: var(--faq-rule-soft);
}
.page-faq .faq-sec:first-of-type {
  border-top: 0;
}
.page-faq .faq-head {
  margin-bottom: clamp(18px, 3vw, 28px);
}
.page-faq .faq-head .h2 {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(20px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}
.page-faq .faq-head__note {
  margin: 10px 0 0;
  max-width: 74ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: 0 0 clamp(18px, 3vw, 26px);
  border: var(--faq-rule);
  background: var(--ink-2);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}
.page-faq .faq-figure__cap {
  display: block;
  padding: 8px 12px;
  border-top: var(--faq-rule-soft);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--violet);
}
.page-faq .faq-figure--side {
  margin-bottom: 0;
}

/* ---------- 筛选条 ---------- */
.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  border-top: var(--faq-rule);
  border-bottom: var(--faq-rule);
}
.page-faq .filter-bar__label {
  margin-right: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--violet);
}
.page-faq .faq-filter {
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--stone);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}
.page-faq .faq-filter:hover {
  color: var(--paper);
  border-color: var(--line-cyan);
}
.page-faq .faq-filter.is-active,
.page-faq .faq-filter[aria-pressed="true"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}
.page-faq .faq-filter:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .filter-bar__count {
  margin-left: auto;
  font-size: 12px;
  color: var(--violet);
}

/* ---------- 分栏对照表 ---------- */
.page-faq .qa-list {
  border-bottom: var(--faq-rule);
}
.page-faq .qa {
  border-top: var(--faq-rule-soft);
}
.page-faq .qa:first-child {
  border-top: 0;
}
.page-faq .qa__summary {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) 16px;
  gap: 6px 10px;
  align-items: start;
  padding: 14px 10px 14px 0;
  cursor: pointer;
  list-style: none;
  transition: background-color 0.15s ease;
}
.page-faq .qa__summary::-webkit-details-marker {
  display: none;
}
.page-faq .qa__summary::marker {
  content: "";
}
.page-faq .qa__no {
  padding-top: 3px;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--violet);
}
.page-faq .qa__q {
  font-size: 14px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
  overflow-wrap: break-word;
}
.page-faq .qa__a {
  grid-column: 2 / span 1;
  font-size: 15px;
  line-height: 1.7;
  color: var(--stone);
  overflow-wrap: break-word;
}
.page-faq .qa__mark {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.35;
  color: var(--violet);
  transition: transform 0.18s ease, color 0.18s ease;
}
.page-faq .qa:hover .qa__summary {
  background: var(--ink-2);
}
.page-faq .qa:hover .qa__mark {
  color: var(--cyan);
  transform: translateX(2px);
}
.page-faq .qa[open] .qa__summary {
  background: var(--ink-2);
}
.page-faq .qa[open] .qa__mark {
  color: var(--cyan);
  transform: rotate(90deg);
}
.page-faq .qa__more {
  padding: 0 10px 18px 38px;
}
.page-faq .qa__more p {
  margin: 0;
  max-width: 76ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}
.page-faq .qa__link {
  display: inline-block;
  margin-top: 10px;
  font-size: 13px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}
.page-faq .qa__link:hover {
  color: var(--cyan-soft);
}
.page-faq .filter-empty {
  margin: 18px 0 0;
  padding: 18px;
  border: 1px dashed var(--line);
  font-size: 14px;
  color: var(--stone);
}
.page-faq .filter-empty[hidden] {
  display: none;
}

/* ---------- 版本对照答疑 ---------- */
.page-faq .qa-cols {
  border-top: var(--faq-rule);
}
.page-faq .qa-col {
  display: grid;
  gap: 8px 20px;
  padding: 20px 0;
  border-bottom: var(--faq-rule-soft);
}
.page-faq .qa-col__no {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}
.page-faq .qa-col .h3 {
  margin: 0;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}
.page-faq .qa-steps {
  counter-reset: qs;
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .qa-steps li {
  counter-increment: qs;
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}
.page-faq .qa-steps li::before {
  content: counter(qs, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--teal);
}
.page-faq .qa-cols__foot {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}
.page-faq .qa-cols__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

/* ---------- 入口与收藏（浅色区块） ---------- */
.page-faq .faq-light {
  background: var(--paper);
  color: var(--ink);
  border-top: var(--faq-rule);
  border-bottom: var(--faq-rule);
}
.page-faq .faq-light .faq-head .h2 {
  color: var(--ink);
}
.page-faq .faq-light .faq-head__note {
  color: rgba(11, 18, 32, 0.72);
}
.page-faq .faq-light__grid {
  display: grid;
  gap: 20px;
}
.page-faq .faq-light__block {
  padding-top: 16px;
  border-top: 1px solid rgba(11, 18, 32, 0.18);
}
.page-faq .faq-light__block .h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 600;
  color: var(--ink);
}
.page-faq .faq-light__block p {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(11, 18, 32, 0.78);
}
.page-faq .faq-light__list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-light__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.7;
  color: rgba(11, 18, 32, 0.72);
}
.page-faq .faq-light__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 6px;
  height: 1px;
  background: var(--clay);
}

/* ---------- 反馈三步路径 ---------- */
.page-faq .faq-feedback__grid {
  display: grid;
  gap: clamp(22px, 3vw, 32px);
}
.page-faq .steps {
  position: relative;
  display: grid;
  gap: 20px;
}
.page-faq .step {
  display: grid;
  gap: 8px;
}
.page-faq .step__node {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius);
  background: var(--ink-2);
  font-size: 13px;
  color: var(--cyan);
}
.page-faq .step__title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: var(--paper);
}
.page-faq .step__text {
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}

/* ---------- 联系方式 ---------- */
.page-faq .contact-pair {
  display: grid;
  gap: 16px;
}
.page-faq .contact-card {
  padding: 20px;
  border: var(--faq-rule);
  border-left: 2px solid var(--cyan);
  background: var(--ink-2);
}
.page-faq .contact-card--warm {
  border-left-color: var(--orange);
}
.page-faq .contact-card__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--violet);
}
.page-faq .contact-card .h3 {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  color: var(--paper);
}
.page-faq .contact-card__value {
  margin: 0 0 10px;
  font-size: clamp(16px, 2.2vw, 20px);
  color: var(--cyan);
  overflow-wrap: anywhere;
}
.page-faq .contact-card--warm .contact-card__value {
  color: var(--orange);
}
.page-faq .contact-card__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--stone);
}
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 30px);
}
.page-faq .faq-foot-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}
.page-faq .faq-foot-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

/* ---------- 桌面端栅格 ---------- */
@media (min-width: 760px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }
  .page-faq .steps::before {
    content: "";
    position: absolute;
    left: 12px;
    right: 12px;
    top: 23px;
    height: 1px;
    background: var(--line-cyan);
  }
  .page-faq .contact-pair {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
  .page-faq .faq-light__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 28px;
  }
}

@media (min-width: 840px) {
  .page-faq .qa-col {
    grid-template-columns: 56px minmax(0, 1fr) minmax(0, 1.25fr);
    align-items: start;
    padding: 24px 0;
  }
}

@media (min-width: 880px) {
  .page-faq .qa__summary {
    grid-template-columns: 34px minmax(0, 1.05fr) minmax(0, 1.3fr) 18px;
    gap: 0 18px;
    align-items: start;
    padding: 16px 12px 16px 0;
  }
  .page-faq .qa__q {
    padding-right: 8px;
  }
  .page-faq .qa__a {
    grid-column: auto;
    padding-left: 16px;
    border-left: 1px solid var(--line-cyan);
  }
  .page-faq .qa__more {
    padding: 0 12px 20px 52px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    column-gap: clamp(28px, 5vw, 64px);
  }
  .page-faq .faq-feedback__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__summary,
  .page-faq .qa__mark,
  .page-faq .faq-jump__link,
  .page-faq .faq-filter,
  .page-faq .crumb__link {
    transition: none;
  }
  .page-faq .qa:hover .qa__mark {
    transform: none;
  }
  .page-faq .faq-jump__link:hover {
    transform: none;
  }
}