.page-faq {
  --faq-panel: #0d2432;
  --faq-panel-deep: #0b1e2a;
  --faq-line: rgba(143, 184, 182, 0.28);
  --faq-line-strong: rgba(143, 184, 182, 0.52);
  background: var(--night);
  color: var(--grey);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  padding-bottom: 72px;
}

.page-faq .crumbs {
  padding-top: 26px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 58px) 0 clamp(24px, 4vw, 44px);
  border-bottom: 3px solid var(--ink);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(255, 106, 43, 0.18), rgba(255, 106, 43, 0) 62%),
    var(--night);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 6px;
  background: linear-gradient(180deg, var(--orange), var(--lime));
}

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

.page-faq .faq-hero__eyebrow {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.18em;
  color: var(--sand);
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  max-width: 17em;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 7.2vw, 56px);
  line-height: 1.08;
  letter-spacing: -0.012em;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 44em;
  font-size: clamp(15px, 1.9vw, 17px);
  color: var(--grey);
}

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.page-faq .faq-hero__facts li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px 13px;
  background: var(--plateau);
  border: 2px solid var(--faq-line-strong);
  box-shadow: var(--shadow-sm);
  min-width: 0;
}

.page-faq .faq-hero__num {
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  color: var(--white);
}

.page-faq .faq-hero__factlabel {
  font-size: 12px;
  line-height: 1.4;
  color: var(--mist);
}

/* ---------- 目录 + 正文 布局 ---------- */
.page-faq .faq-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: clamp(30px, 5vw, 56px) 0 0;
}

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

.page-faq .faq-toc {
  border: 2px solid var(--faq-line-strong);
  background: var(--faq-panel);
  padding: 16px;
}

.page-faq .faq-toc__label {
  margin: 0 0 12px;
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.2em;
  color: var(--sand);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--grey);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background var(--step), border-color var(--step), color var(--step);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: var(--plateau);
  border-left-color: var(--orange);
  color: var(--white);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-toc__cta {
  margin-top: 14px;
  width: 100%;
  text-align: center;
}

/* ---------- 章节 ---------- */
.page-faq .faq-block {
  min-width: 0;
  padding-bottom: clamp(34px, 6vw, 62px);
}

.page-faq .faq-block + .faq-block {
  border-top: 1px solid var(--faq-line);
  padding-top: clamp(26px, 4.5vw, 46px);
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 13px;
  margin-bottom: 16px;
}

.page-faq .faq-block__index {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-block__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 4.2vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--white);
}

.page-faq .faq-block__lead {
  margin: 0 0 16px;
  max-width: 52em;
  font-size: 15px;
  color: var(--grey);
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 12px;
}

.page-faq .faq-steps__item {
  position: relative;
  counter-increment: faqstep;
  padding: 16px 18px 16px 62px;
  background: var(--faq-panel);
  border: 2px solid var(--faq-line);
  border-left: 4px solid var(--plateau);
  transition: border-color var(--step), background var(--step);
}

.page-faq .faq-steps__item::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 16px;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-steps__item:hover {
  background: var(--plateau);
  border-left-color: var(--orange);
}

.page-faq .faq-steps__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--white);
}

.page-faq .faq-steps__item p {
  margin: 0;
  font-size: 15px;
  color: var(--grey);
}

/* ---------- 图片容器 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  background: var(--faq-panel-deep);
  border: 2px solid var(--faq-line-strong);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-figure .media__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .media__cap {
  padding: 10px 14px;
  border-top: 2px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- 对照区 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

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

.page-faq .faq-split__text > p {
  margin: 0 0 16px;
  font-size: 15px;
  color: var(--grey);
}

.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  color: var(--grey);
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 9px;
  height: 9px;
  background: var(--lime);
}

.page-faq .faq-list strong {
  color: var(--white);
  font-weight: 700;
}

.page-faq .faq-console {
  min-width: 0;
  background: var(--faq-panel);
  border: 2px solid var(--faq-line-strong);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-console__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--plateau);
  border-bottom: 2px solid var(--faq-line);
}

.page-faq .faq-console__hint {
  font-size: 12px;
  color: var(--grey);
}

.page-faq .faq-console__rows {
  list-style: none;
  margin: 0;
  padding: 14px;
  display: grid;
  gap: 10px;
}

.page-faq .faq-console__row {
  display: grid;
  grid-template-columns: 68px minmax(0, 1fr) 48px;
  align-items: center;
  gap: 10px;
}

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

.page-faq .faq-console__bar {
  display: block;
  height: 10px;
  background: rgba(143, 184, 182, 0.16);
  border: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-console__fill {
  display: block;
  height: 100%;
  background: var(--orange);
  transition: width var(--step-slow), background var(--step);
}

.page-faq .faq-console__row:nth-child(even) .faq-console__fill {
  background: var(--lime);
}

.page-faq .faq-console__num {
  font-size: 14px;
  text-align: right;
  color: var(--white);
}

/* ---------- 设备 ---------- */
.page-faq .faq-devices {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

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

.page-faq .faq-devices__text > p {
  margin: 0 0 16px;
  font-size: 15px;
  color: var(--grey);
}

.page-faq .faq-devices__note {
  margin: 16px 0 0;
  padding: 12px 14px;
  border-left: 4px solid var(--lime);
  background: var(--faq-panel);
  font-size: 14px;
  color: var(--grey);
}

.page-faq .faq-devices__note .data {
  color: var(--lime);
  font-size: 16px;
}

/* ---------- 索引 ---------- */
.page-faq .faq-index {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-index__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-index__key {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--lime);
}

.page-faq .faq-index__desc {
  font-size: 15px;
  color: var(--grey);
}

.page-faq .faq-block__lead .data {
  color: var(--orange);
  font-size: 17px;
}

/* ---------- 专栏 ---------- */
.page-faq .faq-column {
  padding: 18px;
  background: linear-gradient(180deg, rgba(201, 161, 90, 0.16), rgba(201, 161, 90, 0.03));
  border: 2px solid var(--faq-line-strong);
  border-top: 4px solid var(--sand);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-column__lead {
  margin: 0 0 18px;
  max-width: 50em;
  font-size: 15px;
  color: var(--grey);
}

.page-faq .faq-column__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-faq .faq-column__stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 12px 14px;
  background: rgba(6, 16, 21, 0.5);
  border: 1px solid var(--faq-line-strong);
  min-width: 0;
}

.page-faq .faq-column__stat .data {
  font-size: 28px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--white);
}

.page-faq .faq-column__statnum--sand {
  color: var(--sand) !important;
}

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

.page-faq .faq-column__note {
  margin: 18px 0 0;
  font-size: 14px;
  color: var(--grey);
}

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

/* ---------- 问答 ---------- */
.page-faq .faq-qa {
  border-top: 2px solid var(--faq-line-strong);
  margin-top: 6px;
}

.page-faq .faq-qa__item {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-qa__item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
  transition: color var(--step);
}

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

.page-faq .faq-qa__item summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-qa__item summary:hover,
.page-faq .faq-qa__item summary:focus-visible {
  color: var(--orange);
}

.page-faq .faq-qa__item[open] summary {
  color: var(--orange);
}

.page-faq .faq-qa__item[open] summary::after {
  content: "−";
}

.page-faq .faq-qa__body {
  padding: 0 0 16px;
  max-width: 58em;
}

.page-faq .faq-qa__body p {
  margin: 0;
  font-size: 15px;
  color: var(--grey);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  margin-top: 26px;
  padding: 18px;
  background: var(--faq-panel);
  border: 2px solid var(--faq-line-strong);
  border-left: 5px solid var(--orange);
}

.page-faq .faq-contact__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
  color: var(--white);
}

.page-faq .faq-contact__row {
  margin: 0 0 6px;
  font-size: 15px;
  color: var(--grey);
}

.page-faq .faq-contact__link {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
  word-break: break-all;
  -webkit-user-select: all;
  user-select: all;
  transition: color var(--step);
}

.page-faq .faq-contact__link:hover,
.page-faq .faq-contact__link:focus-visible {
  color: var(--orange);
}

.page-faq .faq-contact__note {
  margin: 12px 0 0;
  font-size: 14px;
  color: var(--mist);
}

.page-faq .faq-contact__cta {
  margin-top: 16px;
}

/* ---------- 收尾按钮 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-index__item {
    grid-template-columns: 152px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-faq .faq-column__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-devices {
    grid-template-columns: minmax(0, 0.82fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }

  .page-faq .faq-devices .faq-figure {
    margin-top: 0;
  }
}

@media (min-width: 960px) {
  .page-faq {
    padding-bottom: 96px;
  }

  .page-faq .faq-flow {
    grid-template-columns: 252px minmax(0, 1fr);
    gap: 52px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 88px;
    align-self: start;
  }

  .page-faq .faq-qa__item summary {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__link,
  .page-faq .faq-steps__item,
  .page-faq .faq-console__fill,
  .page-faq .faq-qa__item summary,
  .page-faq .faq-contact__link {
    transition: none;
  }
}