.page-faq {
  --faq-shell: 1180px;
  --faq-side: 236px;
  --faq-gap: clamp(28px, 4vw, 64px);
  --faq-arow: 26px;
  background: var(--mg-gray);
  color: var(--mg-ink);
  font-family: var(--font-cn);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.page-faq .shell {
  width: 100%;
  max-width: var(--shell);
}

.page-faq .faq-hero {
  position: relative;
  background: var(--grad-paper);
  border-bottom: 1px solid var(--mg-line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto -10% -55% auto;
  width: 520px;
  height: 520px;
  background: radial-gradient(closest-side, rgba(108, 92, 231, .18), transparent 70%),
              radial-gradient(closest-side, rgba(26, 92, 255, .14), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 40px;
}

.page-faq .faq-hero__eyebrow {
  display: block;
  margin: 0 0 18px;
  color: var(--mg-blue);
  letter-spacing: .08em;
}

.page-faq .faq-hero__title {
  margin: 0 0 22px;
  max-width: 16ch;
  font-size: clamp(34px, 7vw, 72px);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: .02em;
  color: var(--mg-ink);
}

.page-faq .faq-hero__title::after {
  content: "";
  display: block;
  width: 96px;
  height: 6px;
  margin-top: 24px;
  border-radius: var(--r-pill);
  background: var(--grad-line);
}

.page-faq .faq-hero__lede {
  max-width: 60ch;
  margin: 0 0 40px;
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink-80);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--mg-line);
  border: 1px solid var(--mg-line);
  border-radius: var(--r-md);
  overflow: hidden;
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 20px 20px 22px;
  background: var(--mg-paper);
}

.page-faq .faq-fact__num {
  font-family: var(--font-en);
  font-size: 30px;
  font-weight: 600;
  line-height: 1;
  color: var(--mg-blue);
  letter-spacing: .01em;
}

.page-faq .faq-fact:nth-child(3) .faq-fact__num {
  color: var(--mg-violet);
}

.page-faq .faq-fact:nth-child(4) .faq-fact__num {
  color: var(--mg-orange);
}

.page-faq .faq-fact__label {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-64);
}

.page-faq .faq-body {
  padding-top: clamp(40px, 6vw, 88px);
  padding-bottom: clamp(56px, 8vw, 112px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  align-items: start;
}

/* ---------- 左侧目录 ---------- */

.page-faq .faq-toc {
  padding: 22px 22px 20px;
  background: var(--mg-paper);
  border: 1px solid var(--mg-line);
  border-radius: var(--r-md);
}

.page-faq .faq-toc__title {
  margin: 0 0 16px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
  color: var(--mg-blue);
}

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

.page-faq .faq-toc__item + .faq-toc__item {
  border-top: 1px dashed var(--mg-line);
}

.page-faq .faq-toc__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 10px 10px 8px;
  border-radius: var(--r-xs);
  color: var(--ink-80);
  font-size: 15px;
  text-decoration: none;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  background: var(--mg-blue-soft);
  color: var(--mg-blue-dark);
}

.page-faq .faq-toc__idx {
  flex: none;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--mg-blue);
}

.page-faq .faq-toc__tip {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--mg-line);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-64);
}

/* ---------- 右侧流程 ---------- */

.page-faq .faq-flow {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 5vw, 68px);
  min-width: 0;
}

.page-faq .faq-step {
  scroll-margin-top: 120px;
  padding: 28px 22px 30px;
  background: var(--mg-paper);
  border: 1px solid var(--mg-line);
  border-radius: var(--r-lg);
}

.page-faq .faq-step--paper {
  background: linear-gradient(180deg, #FBFCFE 0%, #EFF3FA 100%);
}

.page-faq .faq-step--help {
  background: var(--grad-cool);
  border-color: transparent;
  color: #FBFCFE;
}

.page-faq .faq-step--help .faq-step__num,
.page-faq .faq-step--help .faq-step__kicker {
  color: rgba(251, 252, 254, .78);
}

.page-faq .faq-step--help .faq-step__title {
  color: #FBFCFE;
}

.page-faq .faq-step--help .faq-step__intro {
  color: rgba(251, 252, 254, .86);
}

.page-faq .faq-step__head {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--mg-line);
}

.page-faq .faq-step--help .faq-step__head {
  border-bottom-color: var(--paper-line);
}

.page-faq .faq-step__num {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--r-sm);
  background: var(--mg-paper);
  border: 1px solid var(--mg-line);
  font-size: 18px;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--mg-blue);
}

.page-faq .faq-step--paper .faq-step__num {
  background: var(--mg-paper);
}

.page-faq .faq-step--help .faq-step__num {
  background: rgba(251, 252, 254, .16);
  border-color: var(--paper-line);
}

.page-faq .faq-step__kicker {
  margin: 2px 0 6px;
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--mg-orange);
}

.page-faq .faq-step__title {
  margin: 0;
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: .01em;
}

.page-faq .faq-step__intro {
  margin: 0 0 28px;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-80);
}

/* ---------- 编号动作条 ---------- */

.page-faq .faq-actions {
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-left: 2px solid var(--mg-blue-soft);
}

.page-faq .faq-action {
  position: relative;
  padding: 4px 4px 18px 24px;
}

.page-faq .faq-action:last-child {
  padding-bottom: 6px;
}

.page-faq .faq-action__dot {
  position: absolute;
  left: -8px;
  top: 12px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--mg-paper);
  border: 2px solid var(--mg-blue);
}

.page-faq .faq-action__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--mg-ink);
}

.page-faq .faq-action__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-64);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 0 0 24px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--r-md);
}

.page-faq .faq-step--help .faq-figure .media__caption {
  color: rgba(251, 252, 254, .72);
}

/* ---------- 下一步 ---------- */

.page-faq .faq-next {
  margin: 0;
  padding-top: 20px;
  border-top: 1px dashed var(--mg-line);
  font-size: 15px;
  color: var(--ink-64);
}

.page-faq .faq-step--help .faq-next {
  border-top-color: var(--paper-line);
  color: rgba(251, 252, 254, .8);
}

.page-faq .faq-step--help .faq-next .link-arrow {
  color: #FBFCFE;
}

/* ---------- 第二步：适配对照 ---------- */

.page-faq .faq-compat {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 28px;
}

.page-faq .faq-compat__col {
  padding: 20px 20px 22px;
  border: 1px solid var(--mg-line);
  border-radius: var(--r-md);
  background: var(--mg-paper);
}

.page-faq .faq-compat__col--hint {
  background: linear-gradient(140deg, #EAF0FF 0%, #F2EFFF 100%);
  border-color: rgba(108, 92, 231, .26);
}

.page-faq .faq-compat__title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 500;
  color: var(--mg-ink);
}

.page-faq .faq-compat__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-compat__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink-80);
}

.page-faq .faq-compat__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  border-radius: var(--r-pill);
  background: var(--mg-orange);
}

.page-faq .faq-compat__text {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-80);
}

.page-faq .faq-compat__tags {
  gap: 8px;
}

/* ---------- 第三步：版本 ---------- */

.page-faq .faq-versions {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-bottom: 28px;
}

.page-faq .faq-version {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px 20px 20px;
}

.page-faq .faq-version__title {
  margin: 0;
  font-size: 30px;
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: .02em;
  color: var(--mg-ink);
}

.page-faq .faq-version__text {
  margin: 0;
  flex: 1 1 auto;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-64);
}

.page-faq .faq-version__meta {
  margin: 0;
  padding-top: 12px;
  border-top: 1px solid var(--mg-line);
  font-size: 13px;
  color: var(--ink-42);
}

.page-faq .faq-rollback {
  padding: 22px 20px 22px;
  background: var(--mg-blue-soft);
  border-radius: var(--r-md);
}

.page-faq .faq-rollback__title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 500;
  color: var(--mg-blue-dark);
}

.page-faq .faq-rollback__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-rollback__list li {
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-80);
}

.page-faq .faq-rollback__list strong {
  font-weight: 500;
  color: var(--mg-blue-dark);
}

/* ---------- 第四步：折叠问答 ---------- */

.page-faq .faq-qa-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 26px;
}

.page-faq .faq-qa {
  border: 1px solid var(--mg-line);
  border-radius: var(--r-md);
  background: var(--mg-paper);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-qa[open] {
  border-color: rgba(26, 92, 255, .34);
  background: #FFFFFF;
}

.page-faq .faq-qa__q {
  position: relative;
  display: block;
  padding: 16px 48px 16px 20px;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--mg-ink);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-qa__q::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-en);
  font-size: 20px;
  line-height: 1;
  color: var(--mg-blue);
  transition: transform var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-qa[open] .faq-qa__q::after {
  content: "–";
  color: var(--mg-orange);
}

.page-faq .faq-qa__a {
  padding: 0 20px 20px;
  border-top: 1px dashed var(--mg-line);
  margin-top: 2px;
}

.page-faq .faq-qa__a p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-64);
}

/* ---------- 第五步：人工协助 ---------- */

.page-faq .faq-help {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin-bottom: 26px;
}

.page-faq .faq-help__note,
.page-faq .faq-help__card {
  padding: 22px 20px 22px;
  border-radius: var(--r-md);
  border: 1px solid var(--paper-line);
  background: rgba(251, 252, 254, .1);
}

.page-faq .faq-help__card {
  background: rgba(251, 252, 254, .94);
  border-color: transparent;
  color: var(--mg-ink);
}

.page-faq .faq-help__title {
  margin: 0 0 14px;
  font-size: 16px;
  font-weight: 500;
}

.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-help__list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.65;
  color: rgba(251, 252, 254, .88);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 2px;
  border-radius: var(--r-pill);
  background: var(--mg-orange);
}

.page-faq .faq-help__contact {
  margin: 0 0 14px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

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

.page-faq .faq-help__label {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-42);
}

.page-faq .faq-help__value {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--mg-ink);
  word-break: break-word;
}

.page-faq .faq-help__value.en {
  font-family: var(--font-en);
  letter-spacing: .01em;
}

.page-faq .faq-help__hint {
  margin: 0;
  padding-top: 14px;
  border-top: 1px solid var(--mg-line);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ink-64);
}

.page-faq .faq-help__links {
  gap: 10px;
}

.page-faq .faq-help__links .btn {
  flex: 0 1 auto;
}

/* ---------- 桌面布局 ---------- */

@media (min-width: 620px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero__eyebrow {
    margin-bottom: 22px;
  }

  .page-faq .faq-step {
    padding: 36px 34px 38px;
  }

  .page-faq .faq-compat,
  .page-faq .faq-help {
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .page-faq .faq-versions {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-help__row {
    flex-direction: row;
    gap: 16px;
    align-items: baseline;
  }

  .page-faq .faq-help__label {
    flex: none;
    width: 72px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-side) minmax(0, 1fr);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-step__head {
    gap: 20px;
  }

  .page-faq .faq-action {
    padding-left: 32px;
  }

  .page-faq .faq-step--help {
    padding: 44px 42px 46px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__title {
    font-size: 72px;
  }

  .page-faq .faq-qa__q {
    padding: 18px 56px 18px 26px;
  }

  .page-faq .faq-qa__a {
    padding: 0 26px 24px;
  }

  .page-faq .faq-compat__col,
  .page-faq .faq-rollback,
  .page-faq .faq-help__note,
  .page-faq .faq-help__card {
    padding: 26px 28px;
  }
}

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