/* ===== 问题排查页 · 页面专属样式 ===== */

.page-faq {
  --faq-line: rgba(166, 178, 198, .20);
  --faq-line-strong: rgba(166, 178, 198, .38);
  --faq-gap: clamp(20px, 3vw, 40px);
  --faq-block: #2A3550;
  background: var(--night);
  color: var(--white);
  font-family: var(--font-body);
}

.page-faq p {
  margin: 0;
}

/* ---------- 面包屑 ---------- */

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-faq .crumbs a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 200ms ease, color 200ms ease;
}

.page-faq .crumbs a:hover,
.page-faq .crumbs a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--orange);
}

.page-faq .crumbs__sep {
  color: var(--line-strong);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-block: clamp(26px, 4.5vw, 52px) clamp(36px, 5vw, 68px);
  border-bottom: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 88% at 84% 0%, rgba(62, 124, 140, .20), transparent 62%),
    linear-gradient(180deg, var(--night) 0%, var(--deep) 100%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(22px, 3.6vw, 44px);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 7.4vw, 76px);
  line-height: 1.04;
  letter-spacing: .01em;
  margin: 12px 0 0;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin-top: clamp(16px, 2.4vw, 26px);
  max-width: 34em;
  color: var(--mist);
}

.page-faq .kicker {
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--red);
  text-transform: uppercase;
}

.page-faq .faq-hero__scale {
  border-top: 1px solid var(--faq-line-strong);
  padding-top: 14px;
}

.page-faq .faq-hero__scale-label {
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
  margin-bottom: 10px;
}

.page-faq .index {
  font-family: var(--font-index);
}

.page-faq .rulersvg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .rulersvg__axis {
  stroke: var(--line-strong);
  stroke-width: 1;
}

.page-faq .rulersvg__span {
  stroke: var(--butter);
  stroke-width: 2;
}

.page-faq .rulersvg__tick {
  stroke: var(--line-strong);
  stroke-width: 1;
}

.page-faq .rulersvg__tick--end {
  stroke: var(--red);
  stroke-width: 2;
}

.page-faq .rulersvg__dot {
  fill: var(--red);
}

.page-faq .rulersvg__label {
  fill: var(--mist);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .08em;
}

.page-faq .rulersvg__label--end {
  fill: var(--butter);
  font-weight: 700;
}

.page-faq .faq-hero__scale-note {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
  max-width: 42em;
}

/* ---------- 页面目录 ---------- */

.page-faq .faq-toc {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(14, 21, 38, .94);
  border-bottom: 1px solid var(--faq-line);
  backdrop-filter: blur(6px);
}

.page-faq .faq-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 10px;
  list-style: none;
  margin: 0;
  padding: 10px 0;
}

.page-faq .faq-toc__link {
  display: inline-block;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
  text-decoration: none;
  padding: 4px 8px;
  border: 1px solid transparent;
  transition: color 180ms ease, border-color 180ms ease;
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--white);
  border-color: var(--line-strong);
}

.page-faq .faq-toc__link[aria-current="true"] {
  color: var(--butter);
  border-color: rgba(241, 196, 15, .45);
}

/* ---------- 区块通用 ---------- */

.page-faq .faq-section {
  padding-block: clamp(46px, 6.5vw, 92px);
}

.page-faq .faq-section--stand {
  background: linear-gradient(180deg, rgba(42, 53, 80, .55) 0%, rgba(42, 53, 80, .22) 100%);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-section--deep {
  background: var(--deep);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-section--end {
  background:
    linear-gradient(180deg, var(--night) 0%, var(--deep) 100%);
  border-top: 1px solid var(--faq-line);
}

.page-faq .section__head {
  max-width: 44em;
}

.page-faq .section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(23px, 3.6vw, 40px);
  line-height: 1.16;
  letter-spacing: .01em;
  margin: 10px 0 0;
  color: var(--white);
}

.page-faq .section__intro {
  margin-top: 12px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 图片容器 ---------- */

.page-faq .faq-figure {
  margin: clamp(24px, 3.6vw, 44px) 0 0;
}

.page-faq .figure__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 排查三步 ---------- */

.page-faq .steps {
  list-style: none;
  margin: clamp(28px, 4vw, 52px) 0 0;
  padding: 0;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .steps__item {
  position: relative;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 18px;
}

.page-faq .steps__item::before {
  content: "";
  position: absolute;
  left: 25px;
  top: 60px;
  bottom: calc(-1 * var(--faq-gap));
  width: 1px;
  background: var(--faq-line);
}

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

.page-faq .steps__no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  font-family: var(--font-num);
  font-size: 19px;
  letter-spacing: .04em;
  color: var(--butter);
  background: rgba(241, 196, 15, .07);
  border: 1px solid rgba(241, 196, 15, .55);
}

.page-faq .steps__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(19px, 2.4vw, 25px);
  line-height: 1.2;
  letter-spacing: .02em;
  color: var(--white);
}

.page-faq .steps__rule {
  margin-top: 10px;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--white);
}

.page-faq .steps__eg {
  margin-top: 8px;
  max-width: 40em;
  padding-left: 12px;
  border-left: 2px solid var(--teal);
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-note {
  margin-top: clamp(22px, 3vw, 34px);
  max-width: 42em;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .faq-note--strong {
  color: var(--white);
  border-left: 2px solid var(--red);
  padding-left: 12px;
}

.page-faq .faq-note a {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid rgba(62, 124, 140, .55);
  transition: color 180ms ease, border-color 180ms ease;
}

.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--white);
  border-bottom-color: var(--orange);
}

/* ---------- 现象对照 ---------- */

.page-faq .cmp {
  margin-top: clamp(26px, 3.6vw, 48px);
  border-top: 1px solid var(--faq-line-strong);
}

.page-faq .cmp__head {
  display: none;
}

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

.page-faq .cmp__row {
  display: grid;
  gap: 10px;
  padding: 18px 0;
  border-bottom: 1px solid var(--faq-line);
  transition: background 180ms ease, box-shadow 180ms ease;
}

.page-faq .cmp__row:hover {
  background: rgba(62, 124, 140, .13);
  box-shadow: inset 3px 0 0 var(--orange);
}

.page-faq .cmp__symptom {
  font-size: 15px;
  line-height: 1.8;
  color: var(--white);
}

.page-faq .cmp__symptom::before {
  content: "—";
  color: var(--red);
  margin-right: 8px;
}

.page-faq .cmp__clue {
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

/* ---------- 读数与编号 ---------- */

.page-faq .read-grid {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(26px, 3.6vw, 48px);
}

.page-faq .read-card {
  padding: clamp(20px, 3vw, 32px);
  background: rgba(42, 53, 80, .42);
  border: 1px solid var(--faq-line);
}

.page-faq .read-card__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  letter-spacing: .04em;
  color: var(--white);
}

.page-faq .read-card__note {
  margin-top: 14px;
  font-size: 14px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .stamp {
  display: inline-flex;
  align-items: stretch;
  border: 1px solid var(--faq-line-strong);
}

.page-faq .stamp > span {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  padding: 8px 12px;
  font-family: var(--font-num);
  font-size: clamp(30px, 6vw, 48px);
  line-height: 1.1;
  border-right: 1px solid var(--faq-line);
}

.page-faq .stamp > span:last-child {
  border-right: 0;
}

.page-faq .stamp__d {
  color: var(--butter);
}

.page-faq .stamp__sep {
  color: var(--mist);
  min-width: 26px;
  padding-inline: 4px;
}

.page-faq .rn {
  display: inline-flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 16px;
  border-left: 3px solid var(--butter);
  background: rgba(241, 196, 15, .06);
}

.page-faq .rn__key {
  font-family: var(--font-index);
  font-size: 15px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-faq .rn__val {
  font-family: var(--font-num);
  font-size: clamp(32px, 6vw, 46px);
  line-height: 1;
  color: var(--butter);
}

/* ---------- 复核与更正 ---------- */

.page-faq .fix-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .material {
  list-style: none;
  counter-reset: mat;
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .material li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
  font-size: 15px;
  line-height: 1.85;
  color: var(--white);
}

.page-faq .material li::before {
  counter-increment: mat;
  content: counter(mat, decimal-leading-zero);
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--teal);
  padding-top: 5px;
}

.page-faq .fix-grid__side .figure {
  margin: 0;
}

/* ---------- 收尾 ---------- */

.page-faq .end-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .end-grid__text {
  margin-top: 14px;
  max-width: 38em;
  font-size: 15px;
  line-height: 1.9;
  color: var(--mist);
}

.page-faq .go-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .end-grid__stamp {
  display: grid;
  grid-template-columns: auto auto;
  align-content: start;
  gap: 6px 14px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--faq-line);
  background: rgba(27, 42, 74, .55);
}

.page-faq .end-grid__stamp-key {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--mist);
  align-self: end;
}

.page-faq .end-grid__stamp-val {
  font-family: var(--font-num);
  font-size: clamp(38px, 7vw, 62px);
  line-height: 1;
  color: var(--red);
}

.page-faq .end-grid__stamp-unit {
  grid-column: 2;
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist);
}

/* ---------- 焦点可见 ---------- */

.page-faq a:focus-visible,
.page-faq button:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

/* ---------- 平板与桌面 ---------- */

@media (min-width: 720px) {
  .page-faq .cmp__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
    gap: clamp(28px, 6vw, 88px);
    padding: 12px 0;
    border-bottom: 1px solid var(--faq-line-strong);
    font-family: var(--font-index);
    font-size: 12px;
    letter-spacing: .16em;
    color: var(--mist);
  }

  .page-faq .cmp__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.6fr);
    gap: clamp(28px, 6vw, 88px);
    align-items: start;
    padding: 22px 0;
  }

  .page-faq .cmp__clue {
    padding-left: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(36px, 5vw, 80px);
  }

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

  .page-faq .fix-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4.5vw, 68px);
    align-items: start;
  }

  .page-faq .end-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4.5vw, 68px);
    align-items: start;
  }

  .page-faq .steps__item {
    grid-template-columns: 64px minmax(0, 1fr);
    gap: 24px;
  }

  .page-faq .steps__no {
    width: 64px;
    height: 64px;
    font-size: 22px;
  }

  .page-faq .steps__item::before {
    left: 31px;
    top: 74px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 6fr);
  }
}

/* ---------- 减少动态 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 1ms !important;
    animation-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}