.page-faq {
  --faq-sticky: calc(var(--header-h) + 28px);
  --faq-line: var(--grid-line);
  padding-bottom: 96px;
}

.page-faq .breadcrumb {
  padding-top: 24px;
}

/* ---------- 首屏 ---------- */
.page-faq .tut-hero {
  position: relative;
  margin-top: 24px;
  padding: clamp(24px, 4vw, 48px);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--gradient-veil);
  overflow: hidden;
}

.page-faq .tut-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--electric-cyan), var(--fluoro-orange));
  opacity: 0.85;
}

.page-faq .tut-hero h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(1.9rem, 5.2vw, 3.5rem);
  line-height: 1.15;
  letter-spacing: 0.02em;
  font-weight: 600;
  color: var(--mist-white);
}

.page-faq .tut-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--cold-gray);
}

.page-faq .tut-hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--faq-line);
  display: grid;
  gap: 12px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .tut-hero__facts li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cold-gray);
}

.page-faq .tut-hero__facts li::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  background: var(--electric-cyan);
}

/* ---------- 布局：目录 + 主内容 ---------- */
.page-faq .tut-layout {
  margin-top: 40px;
  display: grid;
  gap: 32px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .toc {
  border-top: 1px solid var(--faq-line);
  padding-top: 16px;
}

.page-faq .toc__title {
  margin: 0 0 12px;
}

.page-faq .toc__list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .toc__list li {
  flex: none;
}

.page-faq .toc__link {
  display: block;
  white-space: nowrap;
  padding: 8px 12px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cold-gray);
  text-decoration: none;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease),
    background-color var(--t) var(--ease);
}

.page-faq .toc__link:hover,
.page-faq .toc__link:focus-visible {
  color: var(--electric-cyan);
  border-color: var(--electric-cyan);
}

.page-faq .toc__link[aria-current="true"] {
  color: var(--deep-indigo);
  background: var(--electric-cyan);
  border-color: var(--electric-cyan);
}

/* ---------- 面板与正文 ---------- */
.page-faq .tut-body {
  display: grid;
  gap: 32px;
  min-width: 0;
}

.page-faq .panel {
  padding: clamp(20px, 3vw, 40px);
}

.page-faq .tut-body h2 {
  margin: 12px 0 0;
  font-size: clamp(1.45rem, 3.2vw, 2.1rem);
  line-height: 1.28;
  letter-spacing: 0.01em;
  font-weight: 600;
  color: var(--mist-white);
}

.page-faq .tut-body h3 {
  margin: 32px 0 0;
  font-size: 1.08rem;
  line-height: 1.5;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--mist-white);
}

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

.page-faq .tut-body a {
  color: var(--electric-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 三步上手 ---------- */
.page-faq .tut-split {
  display: grid;
  gap: 28px;
  margin-top: 8px;
}

.page-faq .steps {
  display: grid;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .step {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--deep-indigo);
  overflow: hidden;
}

.page-faq .step summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .step__num {
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--electric-cyan);
}

.page-faq .step__title {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--mist-white);
}

.page-faq .step__hint {
  display: none;
  grid-column: 2;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cold-gray);
}

.page-faq .step__hint::after {
  content: "展开 ＋";
  margin-left: 10px;
  color: var(--electric-cyan);
}

.page-faq .step[open] .step__hint::after {
  content: "收起 －";
}

.page-faq .step__body {
  padding: 16px 20px 20px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .step__body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--mist-white);
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-shot {
  margin: 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--charcoal);
  overflow: hidden;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-shot figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--faq-line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cold-gray);
}

/* ---------- 清单 ---------- */
.page-faq .checklist {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .checklist li {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-line);
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--mist-white);
}

.page-faq .checklist .key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--electric-cyan);
}

.page-faq .checklist--plain li {
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}

.page-faq .checklist--plain li::before {
  content: "";
  width: 6px;
  height: 6px;
  margin-top: 10px;
  flex: none;
  background: var(--fluoro-orange);
}

.page-faq .numbered {
  margin: 20px 0 0;
  padding: 0 0 0 0;
  list-style: none;
  counter-reset: faqnum;
  display: grid;
  gap: 0;
}

.page-faq .numbered li {
  counter-increment: faqnum;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-line);
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--mist-white);
}

.page-faq .numbered li::before {
  content: counter(faqnum, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--electric-cyan);
}

/* ---------- 收藏分组补充 ---------- */
.page-faq .split-note {
  display: grid;
  gap: 24px;
  margin-top: 8px;
}

.page-faq .split-note h3 {
  margin-top: 28px;
}

.page-faq .split-note p {
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--cold-gray);
}

/* ---------- 反馈数据卡 ---------- */
.page-faq .cards3 {
  display: grid;
  gap: 1px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 26px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--faq-line);
  overflow: hidden;
}

.page-faq .minicard {
  padding: 20px;
  background: var(--deep-indigo);
}

.page-faq .minicard__label {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cold-gray);
}

.page-faq .minicard__value {
  margin: 12px 0 0;
  font-size: clamp(1.6rem, 5vw, 2.2rem);
  line-height: 1;
  letter-spacing: -0.01em;
  color: var(--fluoro-orange);
}

.page-faq .minicard__note {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--cold-gray);
}

/* ---------- 版本角标示意 ---------- */
.page-faq .verbox {
  margin-top: 24px;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--charcoal);
}

.page-faq .verbox__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.page-faq .verbox__tag {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cold-gray);
}

.page-faq .verbox__badge {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  padding: 10px 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--deep-indigo);
}

.page-faq .verbox__cyan {
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--electric-cyan);
}

.page-faq .verbox__orange {
  font-size: 15px;
  letter-spacing: 0.06em;
  color: var(--fluoro-orange);
}

.page-faq .verbox__sep {
  width: 1px;
  height: 18px;
  background: var(--faq-line);
}

.page-faq .verbox__line {
  height: 2px;
  margin-top: 22px;
  background: linear-gradient(90deg, var(--electric-cyan), var(--fluoro-orange));
  opacity: 0.7;
}

.page-faq .verbox__cap {
  margin: 14px 0 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cold-gray);
}

/* ---------- 移动端三格 ---------- */
.page-faq .dock {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin-top: 24px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--faq-line);
  overflow: hidden;
}

.page-faq .dock__cell {
  padding: 18px 10px;
  text-align: center;
  background: var(--deep-indigo);
}

.page-faq .dock__num {
  display: block;
  margin-bottom: 10px;
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: var(--cold-gray);
}

.page-faq .dock__name {
  font-size: 14px;
  font-weight: 600;
  color: var(--mist-white);
}

/* ---------- 排查表 ---------- */
.page-faq .table-wrap {
  margin-top: 24px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .trouble {
  width: 100%;
  border-collapse: collapse;
}

.page-faq .trouble th {
  padding: 14px 18px;
  text-align: left;
  border-bottom: 1px solid var(--faq-line);
  background: var(--charcoal);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  font-weight: 400;
  color: var(--cold-gray);
}

.page-faq .trouble td {
  padding: 16px 18px;
  border-bottom: 1px solid var(--faq-line);
  vertical-align: top;
  font-size: 15px;
  line-height: 1.7;
  color: var(--mist-white);
}

.page-faq .trouble tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .trouble td:first-child {
  color: var(--cold-gray);
  width: 38%;
}

.page-faq .visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 下一步 ---------- */
.page-faq .nextsteps {
  display: grid;
  gap: 1px;
  grid-template-columns: minmax(0, 1fr);
  margin-top: 32px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: var(--faq-line);
  overflow: hidden;
}

.page-faq .nextstep {
  display: block;
  padding: 22px;
  background: var(--deep-indigo);
  text-decoration: none;
  transition: background-color var(--t) var(--ease);
}

.page-faq .nextstep:hover,
.page-faq .nextstep:focus-visible {
  background: var(--panel-indigo);
}

.page-faq .nextstep__k {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--electric-cyan);
}

.page-faq .nextstep__t {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--mist-white);
}

.page-faq .nextstep__d {
  display: block;
  margin-top: 8px;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--cold-gray);
}

.page-faq .tut-foot {
  margin-top: 32px;
  display: flex;
  justify-content: flex-end;
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-faq .step summary {
    grid-template-columns: auto minmax(0, 1fr) auto;
  }

  .page-faq .step__hint {
    display: block;
    grid-column: auto;
  }
}

@media (min-width: 720px) {
  .page-faq .tut-hero__facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .cards3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .nextsteps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .checklist li {
    grid-template-columns: 140px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-faq .checklist--plain li {
    grid-template-columns: auto minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .tut-split {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .split-note {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 36px;
  }

  .page-faq .split-note h3 {
    margin-top: 28px;
  }
}

@media (min-width: 1024px) {
  .page-faq .tut-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .toc {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .toc__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .toc__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    padding: 8px 12px;
  }

  .page-faq .toc__link:hover,
  .page-faq .toc__link:focus-visible {
    border-color: transparent;
    border-left-color: var(--cold-gray);
  }

  .page-faq .toc__link[aria-current="true"] {
    color: var(--electric-cyan);
    background: transparent;
    border-left-color: var(--electric-cyan);
  }
}

@media (max-width: 640px) {
  .page-faq .table-wrap {
    border: 0;
    background: transparent;
  }

  .page-faq .trouble thead {
    display: none;
  }

  .page-faq .trouble tbody,
  .page-faq .trouble tr,
  .page-faq .trouble td {
    display: block;
    width: 100%;
  }

  .page-faq .trouble tr {
    padding: 16px 0;
    border-bottom: 1px solid var(--faq-line);
  }

  .page-faq .trouble tr:last-child {
    border-bottom: 0;
  }

  .page-faq .trouble td {
    padding: 0;
    border: 0;
  }

  .page-faq .trouble td::before {
    content: attr(data-th);
    display: block;
    margin-bottom: 6px;
    font-family: var(--mono);
    font-size: 10.5px;
    letter-spacing: 0.16em;
    color: var(--cold-gray);
  }

  .page-faq .trouble td + td {
    margin-top: 12px;
  }

  .page-faq .dock__cell {
    padding: 16px 6px;
  }

  .page-faq .dock__name {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .toc__link,
  .page-faq .nextstep {
    transition: none;
  }
}