.page-faq {
  --faq-hair: rgba(198, 208, 214, .22);
  --faq-hair-strong: rgba(198, 208, 214, .45);
  --faq-paper-rule: rgba(15, 20, 24, .22);
  --faq-paper-text: rgba(15, 20, 24, .76);
  display: block;
}

.page-faq .breadcrumb {
  margin-top: 28px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-bottom: 10px;
}

.page-faq .faq-hero .display {
  margin: 18px 0 0;
  max-width: 12em;
}

.page-faq .faq-hero .lede {
  margin-top: 20px;
  max-width: 34em;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 28px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--faq-hair);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .08em;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

/* ---------- 01 快速上手 ---------- */

.page-faq .faq-start {
  display: grid;
  gap: 40px;
}

.page-faq .path {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .path__item {
  padding: 22px 0;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .path__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-faq .path__num {
  flex: none;
  font-size: var(--step-2);
  letter-spacing: .06em;
  color: var(--lake);
}

.page-faq .path__title {
  margin: 0;
  font-size: var(--step-4);
  font-weight: 700;
  line-height: 1.45;
  color: var(--salt);
}

.page-faq .path__text {
  margin: 8px 0 0;
  max-width: 32em;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .path__jump {
  display: inline-block;
  margin-top: 10px;
  font-size: var(--step-2);
  color: var(--lake);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .path__jump:hover {
  color: var(--lake-bright);
  border-bottom-color: var(--lake-bright);
}

.page-faq .faq-toc {
  border: 1px solid var(--faq-hair);
  background: var(--stand);
  padding: 20px 18px;
}

.page-faq .faq-toc__title {
  margin: 0 0 14px;
  font-size: var(--step-1);
  letter-spacing: .18em;
  color: var(--slate);
}

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

.page-faq .faq-toc__link {
  display: block;
  padding: 8px 0 8px 14px;
  border-left: 2px solid transparent;
  font-size: var(--step-2);
  line-height: 1.5;
  color: var(--text-dim);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-toc__link:hover {
  color: var(--salt);
  border-left-color: var(--lake-bright);
}

.page-faq .faq-toc__link.is-active {
  color: var(--salt);
  border-left-color: var(--lake);
}

/* ---------- 图片外壳 ---------- */

.page-faq .faq-shot {
  margin: 0;
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-hair-strong);
  background: var(--stand);
}

.page-faq .faq-shot--wide {
  margin: 32px 0 36px;
}

.page-faq .faq-shot--side {
  margin-top: 34px;
}

/* ---------- 02 订阅设置（纸面） ---------- */

.page-faq .section--paper {
  color: var(--ink);
}

.page-faq .section--paper .prose,
.page-faq .section--paper .lede {
  color: var(--faq-paper-text);
}

.page-faq .section--paper .label {
  color: var(--ink);
  border-color: rgba(15, 20, 24, .38);
}

.page-faq .section--paper .faq-shot img {
  border-color: rgba(15, 20, 24, .2);
  background: rgba(15, 20, 24, .04);
}

.page-faq .section--paper .media__caption {
  color: rgba(15, 20, 24, .6);
}

.page-faq .setup {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-paper-rule);
}

.page-faq .setup__step {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 6px 18px;
  padding: 24px 0;
  border-bottom: 1px solid var(--faq-paper-rule);
}

.page-faq .setup__num {
  grid-row: 1 / span 4;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 2px solid var(--ink);
  font-size: var(--step-3);
  line-height: 1;
  color: var(--ink);
}

.page-faq .setup__title {
  margin: 6px 0 0;
  font-family: var(--font-display);
  font-size: var(--step-4);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.page-faq .setup__text {
  margin: 6px 0 0;
  max-width: 38em;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--faq-paper-text);
}

.page-faq .setup__flag {
  margin: 12px 0 0;
  padding: 4px 0 4px 12px;
  border-left: 3px solid var(--alert);
  max-width: 38em;
  font-size: var(--step-2);
  line-height: 1.7;
  color: var(--faq-paper-text);
}

.page-faq .setup__flag b {
  font-weight: 700;
  color: var(--ink);
}

/* ---------- 03 提醒排查 ---------- */

.page-faq .faq-alerts__grid {
  display: grid;
  gap: 36px;
}

.page-faq .checks {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .check {
  position: relative;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--faq-hair);
  cursor: pointer;
}

.page-faq .check__input {
  position: absolute;
  top: 24px;
  left: 1px;
  width: 20px;
  height: 20px;
  margin: 0;
  opacity: 0;
  cursor: pointer;
}

.page-faq .check__box {
  width: 20px;
  height: 20px;
  margin-top: 3px;
  position: relative;
  border: 1px solid var(--faq-hair-strong);
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .check__input:checked ~ .check__box {
  background: var(--lake);
  border-color: var(--lake);
}

.page-faq .check__input:checked ~ .check__box::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border: solid var(--night);
  border-width: 0 2px 2px 0;
  transform: rotate(43deg);
}

.page-faq .check__input:focus-visible ~ .check__box {
  outline: 2px solid var(--lake-bright);
  outline-offset: 3px;
}

.page-faq .check__title {
  display: block;
  font-size: var(--step-3);
  font-weight: 700;
  line-height: 1.55;
  color: var(--salt);
}

.page-faq .check__desc {
  display: block;
  margin-top: 6px;
  max-width: 36em;
  font-size: var(--step-2);
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 04 导航与筛选 ---------- */

.page-faq .levels {
  list-style: none;
  margin: 28px 0 0;
  padding: 0;
}

.page-faq .levels__item {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 4px 16px;
  padding: 18px 0;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .levels__item:last-child {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .levels__idx {
  font-size: var(--step-2);
  letter-spacing: .06em;
  color: var(--lake);
}

.page-faq .levels__name {
  font-family: var(--font-display);
  font-size: var(--step-4);
  font-weight: 700;
  line-height: 1.35;
  color: var(--salt);
}

.page-faq .levels__note {
  grid-column: 2;
  max-width: 36em;
  font-size: var(--step-2);
  line-height: 1.75;
  color: var(--text-dim);
}

.page-faq .axes {
  display: grid;
  gap: 22px;
  margin-top: 36px;
}

.page-faq .axes__col {
  padding: 20px 0 0;
  border-top: 2px solid var(--lake);
}

.page-faq .axes__text {
  margin: 12px 0 0;
  max-width: 34em;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--text-dim);
}

/* ---------- 05/06 术语与问答（纸面） ---------- */

.page-faq .faq-terms__grid {
  display: grid;
  gap: 48px;
}

.page-faq .terms {
  margin: 28px 0 0;
  border-top: 1px solid var(--faq-paper-rule);
}

.page-faq .terms__row {
  display: grid;
  gap: 6px;
  padding: 16px 0;
  border-bottom: 1px solid var(--faq-paper-rule);
}

.page-faq .terms__key {
  margin: 0;
  font-size: var(--step-2);
  letter-spacing: .04em;
  color: var(--ink);
}

.page-faq .terms__val {
  margin: 0;
  max-width: 38em;
  font-size: var(--step-2);
  line-height: 1.75;
  color: var(--faq-paper-text);
}

.page-faq .section--paper .fold {
  border-bottom: 1px solid var(--faq-paper-rule);
}

.page-faq .section--paper .fold:first-of-type {
  border-top: 1px solid var(--faq-paper-rule);
  margin-top: 28px;
}

.page-faq .section--paper .fold__head {
  color: var(--ink);
  font-weight: 700;
  font-size: var(--step-3);
}

.page-faq .section--paper .fold__body {
  color: var(--faq-paper-text);
}

.page-faq .section--paper .fold__body p {
  margin: 0;
  max-width: 38em;
  font-size: var(--step-2);
  line-height: 1.8;
}

/* ---------- 收束 ---------- */

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

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 桌面端 ---------- */

@media (min-width: 640px) {
  .page-faq .terms__row {
    grid-template-columns: 136px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-faq .axes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }
}

@media (min-width: 760px) {
  .page-faq .levels__item {
    grid-template-columns: 44px 148px minmax(0, 1fr);
    align-items: baseline;
  }

  .page-faq .levels__note {
    grid-column: 3;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-start {
    grid-template-columns: minmax(0, 1fr) 232px;
    gap: 64px;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-alerts__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-shot--side {
    position: sticky;
    top: 96px;
    margin-top: 44px;
  }

  .page-faq .faq-terms__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.08fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .setup__step {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 6px 24px;
    padding: 28px 0;
  }
}
<<<END>>>