.page-faq {
  --faq-rail-w: 216px;
  --faq-hair: rgba(29, 76, 110, .55);
  --faq-hair-soft: rgba(29, 76, 110, .3);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 4vw, 46px);
  padding-bottom: clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero h1 {
  max-width: 21ch;
  margin: 14px 0 18px;
  font-size: clamp(30px, 5.2vw, 54px);
  line-height: 1.12;
  letter-spacing: .03em;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  max-width: 42em;
  color: var(--soft);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq .faq-hero .lede a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 227, 200, .4);
}

.page-faq .faq-hero .lede a:hover,
.page-faq .faq-hero .lede a:focus-visible {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 12px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 7px 15px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(15, 47, 74, .55);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--stone);
}

.page-faq .faq-hero__facts .mono {
  font-size: 16px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: 0;
}

/* ---------- 主布局：左侧常驻段落导航 + 内容流 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-bottom: clamp(48px, 8vw, 100px);
}

.page-faq .faq-rail__inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-rail__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-rail__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 15px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(15, 47, 74, .5);
  font-size: 13px;
  color: var(--soft);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--dur) var(--curve), color var(--dur) var(--curve), background var(--dur) var(--curve);
}

.page-faq .faq-rail__link .mono {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--cyan);
}

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

/* ---------- 段落块 ---------- */
.page-faq .faq-block {
  padding-top: clamp(36px, 6vw, 68px);
  scroll-margin-top: calc(var(--header-space) + 26px);
}

.page-faq .faq-body > .faq-block:first-child {
  padding-top: 0;
}

.page-faq .faq-block h2 {
  max-width: 24ch;
  margin: 10px 0 14px;
  font-size: clamp(24px, 3.4vw, 36px);
  line-height: 1.2;
  letter-spacing: .035em;
  color: var(--white);
}

.page-faq .faq-block .lede {
  max-width: 40em;
  color: var(--soft);
}

.page-faq .faq-note {
  max-width: 44em;
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--clay);
  font-size: 15px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .faq-note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 227, 200, .4);
}

/* ---------- 01 对症自查 ---------- */
.page-faq .faq-table {
  margin-top: 26px;
  padding: 0;
  overflow: hidden;
}

.page-faq .faq-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  padding: 18px;
  border-bottom: 1px solid var(--faq-hair);
  color: var(--soft);
  text-decoration: none;
  transition: background var(--dur) var(--curve), color var(--dur) var(--curve);
}

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

.page-faq .faq-row:hover,
.page-faq .faq-row:focus-visible {
  background: rgba(52, 227, 200, .08);
  color: var(--white);
}

.page-faq .faq-row__text {
  font-size: 15px;
  line-height: 1.65;
}

.page-faq .faq-row__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.page-faq .faq-row__go {
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--cyan);
}

/* ---------- 02 额度专区 ---------- */
.page-faq .faq-quota {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  margin-top: 26px;
}

.page-faq .faq-quota__list {
  display: grid;
  gap: 0;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quota__list li {
  display: grid;
  grid-template-columns: minmax(74px, auto) minmax(0, 1fr);
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px dashed var(--faq-hair);
  font-size: 15px;
  line-height: 1.7;
  color: var(--soft);
}

.page-faq .faq-quota__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-quota__key {
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-quota__figure,
.page-faq .faq-timeline-figure {
  margin: 0;
}

.page-faq .faq-quota__img,
.page-faq .faq-timeline-figure__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: contain;
  border: 1px solid var(--line);
  background: var(--ink-deep);
}

.page-faq .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--stone);
}

/* ---------- 03 两端读数 ---------- */
.page-faq .device-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: 26px;
}

.page-faq .device-card {
  padding: 22px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .device-card--mobile {
  border-top: 3px solid var(--cyan);
}

.page-faq .device-card--desktop {
  border-top: 3px solid var(--orange);
}

.page-faq .device-card__name {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--stone);
}

.page-faq .device-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
}

/* ---------- 04 建站周期 ---------- */
.page-faq .faq-timeline-figure {
  margin-top: 26px;
}

.page-faq .timeline {
  margin: 32px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 18px;
  padding-bottom: 30px;
}

.page-faq .timeline__item::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 54px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(29, 76, 110, 0));
}

.page-faq .timeline__item:last-child {
  padding-bottom: 0;
}

.page-faq .timeline__item:last-child::before {
  display: none;
}

.page-faq .timeline__node {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--ink-deep);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

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

.page-faq .timeline__meta {
  margin: 4px 0 0;
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--orange);
}

.page-faq .timeline__title {
  margin: 6px 0 0;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: .03em;
  color: var(--white);
}

.page-faq .timeline__desc {
  max-width: 42em;
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
}

/* ---------- 05 工期浮动 ---------- */
.page-faq .faq-factors {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-factor {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 18px 0;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-factor__idx {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--faq-hair);
  border-radius: var(--pill);
  font-size: 12px;
  color: var(--clay);
}

.page-faq .faq-factor__text {
  margin: 4px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
}

.page-faq .fold {
  margin-top: 18px;
  border: 1px solid var(--line);
  background: rgba(15, 47, 74, .5);
}

.page-faq .fold__head {
  padding: 16px 18px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--white);
  cursor: pointer;
}

.page-faq .fold__body {
  padding: 0 18px 18px;
  color: var(--soft);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .fold__body p {
  margin: 0;
}

.page-faq .faq-checklist {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-checklist li {
  position: relative;
  padding: 6px 0 6px 20px;
  border-bottom: 1px dashed var(--faq-hair-soft);
}

.page-faq .faq-checklist li:last-child {
  border-bottom: 0;
}

.page-faq .faq-checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  width: 8px;
  height: 8px;
  border: 1px solid var(--cyan);
  transform: rotate(45deg);
}

/* ---------- 06 找人帮忙 ---------- */
.page-faq .help-cards {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  margin-top: 26px;
}

.page-faq .help-card {
  padding: 24px 22px;
}

.page-faq .help-card .card__title {
  margin: 14px 0 10px;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--white);
}

.page-faq .help-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
}

.page-faq .faq-copy {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.page-faq .faq-copy-state {
  min-height: 1.2em;
  font-size: 13px;
  color: var(--cyan);
}

/* ---------- 平板以上 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-row {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 20px;
    padding: 18px 22px;
  }

  .page-faq .faq-row__meta {
    flex-wrap: nowrap;
    justify-content: flex-end;
    gap: 18px;
  }

  .page-faq .faq-row__go {
    text-align: right;
  }
}

@media (min-width: 760px) {
  .page-faq .device-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .help-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-quota {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    gap: 44px;
    align-items: start;
  }
}

/* ---------- 桌面端：左侧常驻段落导航 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-rail__inner {
    display: block;
    position: sticky;
    top: calc(var(--header-space) + 22px);
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-rail__link {
    display: flex;
    padding: 11px 0 11px 16px;
    border: 0;
    border-radius: 0;
    background: transparent;
    font-size: 14px;
    position: relative;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    background: transparent;
    color: var(--white);
  }

  .page-faq .faq-rail__link::before {
    content: "";
    position: absolute;
    left: -1px;
    top: 50%;
    width: 2px;
    height: 0;
    background: var(--cyan);
    transform: translateY(-50%);
    transition: height var(--dur) var(--curve);
  }

  .page-faq .faq-rail__link:hover::before,
  .page-faq .faq-rail__link:focus-visible::before {
    height: 62%;
  }

  .page-faq .faq-block {
    padding-top: clamp(44px, 5vw, 76px);
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-row,
  .page-faq .faq-rail__link::before {
    transition: none;
  }
}