.page-faq {
  --faq-line: 1px solid var(--stone);
  --faq-body: #4a4038;
  --faq-gap: clamp(24px, 4vw, 52px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4.5vw, 54px) 0 clamp(20px, 3.6vw, 40px);
  background:
    radial-gradient(120% 88% at 90% 0%, rgba(46, 127, 184, .16) 0%, rgba(46, 127, 184, 0) 60%),
    linear-gradient(180deg, var(--mist) 0%, var(--paper) 76%);
  border-bottom: var(--faq-line);
}

.page-faq .faq-hero__frame {
  position: relative;
  background: var(--white);
  padding: clamp(22px, 3.6vw, 46px) clamp(20px, 3.4vw, 48px) clamp(26px, 4vw, 48px);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 92px;
  height: 4px;
  background: var(--flag);
}

.page-faq .faq-hero__kicker {
  margin: 16px 0 0;
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--sky-deep);
}

.page-faq h1 {
  margin: 10px 0 0;
  font-size: clamp(1.72rem, 4.6vw, 2.9rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -.012em;
  color: var(--ink);
  max-width: 24em;
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 60ch;
  color: var(--faq-body);
  font-size: clamp(1rem, .35vw + .93rem, 1.08rem);
  line-height: 1.82;
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 26px 0 0;
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-start {
  padding-top: var(--faq-gap);
  padding-bottom: clamp(28px, 4.4vw, 56px);
}

.page-faq .faq-start__head h2 {
  font-size: clamp(1.4rem, 2.8vw, 2.05rem);
  font-weight: 900;
  color: var(--ink);
  margin: 0;
}

.page-faq .faq-start__head p {
  margin: 10px 0 0;
  max-width: 52ch;
  color: var(--faq-body);
  line-height: 1.8;
}

.page-faq .faq-start__figure {
  margin: 28px 0 0;
  background: var(--mist);
  border: var(--faq-line);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 32px 0 0;
  padding: 0;
  display: grid;
  gap: 28px;
}

.page-faq .faq-step {
  position: relative;
}

.page-faq .faq-step__num {
  display: inline-block;
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1;
  color: var(--flag);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-step__num:hover,
.page-faq .faq-step__num:focus-visible {
  color: var(--flag-deep);
  border-bottom-color: var(--flag-deep);
}

.page-faq .faq-step h3 {
  margin: 12px 0 8px;
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .faq-step p {
  margin: 0;
  color: var(--faq-body);
  line-height: 1.78;
}

.page-faq .faq-step__out {
  display: block;
  margin-top: 12px;
  padding-left: 11px;
  border-left: 3px solid var(--glacier);
  font-size: .875rem;
  line-height: 1.7;
  color: var(--sky-deep);
}

@media (min-width: 820px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin-top: 38px;
  }

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

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

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

  .page-faq .faq-step + .faq-step {
    border-left: 1px dashed var(--stone);
  }

  .page-faq .faq-step + .faq-step::before {
    content: "";
    position: absolute;
    left: -5px;
    top: 14px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--paper);
    border: 2px solid var(--sky);
  }
}

/* ---------- 主题胶囊栏 ---------- */
.page-faq .faq-topics {
  background: var(--indigo);
  border-top: 3px solid var(--gold);
}

.page-faq .faq-topics__inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-top: 14px;
  padding-bottom: 14px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .topic-pill {
  flex: none;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .02em;
  padding: 9px 15px;
  border: 1px solid rgba(217, 164, 65, .45);
  color: var(--gold);
  text-decoration: none;
  white-space: nowrap;
  transition: background-color .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .topic-pill:hover,
.page-faq .topic-pill:focus-visible {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--indigo);
}

/* ---------- 主题区块 ---------- */
.page-faq .topic {
  margin-top: clamp(26px, 4vw, 48px);
  background: var(--white);
  border: var(--faq-line);
  border-top: 4px solid var(--sky);
  padding: clamp(22px, 3vw, 36px) clamp(18px, 3vw, 40px) clamp(12px, 2vw, 22px);
}

.page-faq .topic--key {
  border-top-color: var(--flag);
}

.page-faq .topic__head {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  gap: 0 16px;
  margin-bottom: 4px;
}

.page-faq .topic__num {
  grid-row: 1 / 3;
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 5.4vw, 3.1rem);
  font-weight: 700;
  line-height: .86;
  letter-spacing: -.03em;
  color: var(--stone);
}

.page-faq .topic__head h2 {
  margin: 0;
  font-size: clamp(1.22rem, 2.5vw, 1.65rem);
  font-weight: 900;
  color: var(--ink);
  letter-spacing: -.008em;
}

.page-faq .topic__sub {
  grid-column: 2;
  margin: 8px 0 0;
  font-size: .945rem;
  line-height: 1.72;
  color: #5a4e45;
}

/* ---------- 检索专题双栏 ---------- */
.page-faq .topic__split {
  display: grid;
  gap: 22px;
  margin-top: 24px;
}

.page-faq .topic__body p {
  margin: 0 0 14px;
  color: var(--faq-body);
  line-height: 1.82;
}

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

.page-faq .topic__split .media {
  margin: 0;
  border: var(--faq-line);
  background: var(--mist);
}

@media (min-width: 880px) {
  .page-faq .topic__split {
    grid-template-columns: 1.08fr .92fr;
    align-items: start;
    gap: 36px;
  }
}

/* ---------- 问答折叠 ---------- */
.page-faq .qa-list {
  margin-top: 26px;
  border-top: 2px solid var(--mist);
}

.page-faq .qa-item {
  border-bottom: 1px dashed var(--stone);
}

.page-faq .qa-item__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink);
  transition: color .18s var(--ease);
}

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

.page-faq .qa-item__q:hover,
.page-faq .qa-item__q:focus-visible {
  color: var(--sky-deep);
}

.page-faq .qa-item__q::before {
  content: "";
  flex: none;
  width: 0;
  height: 0;
  border-left: 7px solid var(--flag);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform .2s var(--ease);
}

.page-faq .qa-item[open] > .qa-item__q::before {
  transform: rotate(90deg);
}

.page-faq .qa-item__a {
  padding: 0 0 20px 19px;
  color: var(--faq-body);
  animation: faq-drop .22s var(--ease) both;
}

.page-faq .qa-item__a p {
  margin: 0;
  line-height: 1.82;
  max-width: 66ch;
}

@keyframes faq-drop {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 收藏两套方式 ---------- */
.page-faq .save-paths {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.page-faq .save-path {
  position: relative;
  background: var(--mist);
  border-left: 4px solid var(--sky);
  padding: 22px clamp(16px, 2.6vw, 26px) 24px;
}

.page-faq .save-path__tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  padding: 3px 9px;
  background: var(--indigo);
  color: var(--gold);
}

.page-faq .save-path h3 {
  margin: 12px 0 8px;
  font-size: 1.08rem;
  font-weight: 800;
  color: var(--ink);
}

.page-faq .save-path p {
  margin: 0;
  color: var(--faq-body);
  line-height: 1.8;
}

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

/* ---------- 反馈三栏 ---------- */
.page-faq .report-grid {
  display: grid;
  gap: 16px;
  margin-top: 24px;
}

.page-faq .report-card {
  background: var(--paper);
  border: var(--faq-line);
  border-top: 3px solid var(--gold);
  padding: 20px clamp(16px, 2.4vw, 24px) 22px;
}

.page-faq .report-card__label {
  display: block;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .1em;
  color: var(--sky-deep);
  margin-bottom: 12px;
}

.page-faq .report-card ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .report-card li {
  position: relative;
  padding-left: 16px;
  font-size: .935rem;
  line-height: 1.72;
  color: var(--faq-body);
  word-break: break-word;
}

.page-faq .report-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 6px;
  height: 6px;
  background: var(--flag);
}

@media (min-width: 860px) {
  .page-faq .report-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
}

/* ---------- 故障自查清单 ---------- */
.page-faq .fix-list {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
  counter-reset: none;
}

.page-faq .fix-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  padding: 20px 0;
  border-top: 1px dashed var(--stone);
}

.page-faq .fix-step:last-child {
  border-bottom: 1px dashed var(--stone);
}

.page-faq .fix-step__num {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-family: var(--font-mono);
  font-size: .95rem;
  font-weight: 700;
  color: var(--white);
  background: var(--sky);
}

.page-faq .fix-step h3 {
  margin: 2px 0 8px;
  font-size: 1.02rem;
  font-weight: 800;
  color: var(--ink);
  line-height: 1.5;
}

.page-faq .fix-step__body p {
  margin: 0;
  color: var(--faq-body);
  line-height: 1.8;
  max-width: 68ch;
}

.page-faq .fix-outro {
  margin: 26px 0 0;
  padding: 18px 20px;
  background: var(--mist);
  border-left: 4px solid var(--glacier);
  font-size: .95rem;
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .fix-outro a {
  color: var(--sky-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .fix-outro a:hover,
.page-faq .fix-outro a:focus-visible {
  color: var(--flag-deep);
}

/* ---------- 窄屏 ---------- */
@media (max-width: 520px) {
  .page-faq .topic {
    padding-left: 16px;
    padding-right: 16px;
  }

  .page-faq .topic__head {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-faq .topic__num {
    grid-row: auto;
    font-size: 1.7rem;
  }

  .page-faq .topic__sub {
    grid-column: 1;
  }

  .page-faq .qa-item__a {
    padding-left: 0;
  }

  .page-faq .fix-step {
    grid-template-columns: 1fr;
    gap: 10px;
  }
}

/* ---------- 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item__a {
    animation: none;
  }

  .page-faq .qa-item__q::before,
  .page-faq .topic-pill,
  .page-faq .faq-step__num,
  .page-faq .qa-item__q {
    transition: none;
  }
}