.page-faq {
  background: var(--paper);
  color: var(--slate);
  font-family: var(--font-display);
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
  padding-top: clamp(18px, 3vw, 28px);
}

.page-faq .breadcrumb a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}

.page-faq .breadcrumb a:hover {
  border-bottom-color: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background: var(--ice-100);
  border-bottom: var(--edge);
  padding-bottom: clamp(32px, 5vw, 64px);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(24px, 4vw, 44px);
}

.page-faq .faq-kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange-d);
}

.page-faq h1 {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6vw, 58px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink-900);
}

.page-faq .faq-lede {
  margin: 0 0 26px;
  max-width: 38em;
  font-size: 17px;
  line-height: 1.75;
  color: var(--slate);
}

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

.page-faq .faq-chips a {
  display: inline-block;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-900);
  text-decoration: none;
  background: var(--paper);
  border: var(--edge);
  box-shadow: var(--shadow-soft);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.page-faq .faq-chips a:hover,
.page-faq .faq-chips a:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--ink-900);
}

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

.page-faq .faq-hero__visual img {
  width: 100%;
  object-fit: cover;
  border: var(--edge);
  box-shadow: var(--shadow-hard);
  background: var(--ink-800);
}

.page-faq .faq-hero__cap {
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 主体：目录 + 问答 ---------- */
.page-faq .faq-body {
  padding: clamp(40px, 7vw, 92px) 0;
}

.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
}

.page-faq .faq-toc {
  align-self: start;
  padding: 18px;
  background: var(--paper);
  border: var(--edge);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-toc__head {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-faq .faq-toc__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  font-size: 15px;
  color: var(--ink-900);
  text-decoration: none;
  border: 2px solid transparent;
  transition: background 0.15s ease, color 0.15s ease;
}

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

.page-faq .faq-toc__list a:hover {
  border-color: var(--ink-900);
}

.page-faq .faq-toc__list a[aria-current="true"] {
  background: var(--ink-900);
  border-color: var(--ink-900);
  color: var(--paper);
}

.page-faq .faq-toc__list a[aria-current="true"] .faq-toc__num {
  color: var(--mint);
}

.page-faq .faq-toc__foot {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--steel);
}

.page-faq .faq-toc__foot a {
  color: var(--orange-d);
  text-decoration: none;
  border-bottom: 2px solid currentColor;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-bottom: 40px;
}

.page-faq .faq-group + .faq-group {
  padding-top: 40px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: start;
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  grid-row: span 2;
  align-self: start;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--paper);
  background: var(--violet);
}

.page-faq .faq-group__head h2 {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.6vw, 34px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .faq-group__head p {
  grid-column: 2;
  margin: 6px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  position: relative;
  margin-bottom: 14px;
  background: var(--paper);
  border: var(--edge);
  box-shadow: var(--shadow-soft);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 3px;
  background: var(--orange);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.2s ease;
}

.page-faq .qa[open]::before {
  transform: scaleY(1);
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-900);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa > summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 20px;
  line-height: 1.2;
  color: var(--orange);
}

.page-faq .qa[open] > summary::after {
  content: "–";
}

.page-faq .qa > summary:hover {
  background: var(--ice-100);
}

.page-faq .qa--lead > summary {
  font-size: clamp(19px, 2.4vw, 24px);
  padding: 20px 20px 18px;
}

.page-faq .qa__body {
  padding: 0 20px 20px;
  font-size: 16px;
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .qa__body p {
  margin: 0 0 12px;
  max-width: 46em;
}

.page-faq .qa__body p:last-child {
  margin-bottom: 0;
}

.page-faq .qa__body a {
  color: var(--ink-900);
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

.page-faq .qa__body a:hover {
  background: var(--ice-100);
}

/* ---------- 三步检索 ---------- */
.page-faq .faq-flow {
  position: relative;
  padding: clamp(40px, 7vw, 88px) 0;
  background-color: var(--ink-900);
  background-image:
    linear-gradient(rgba(131, 148, 171, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(131, 148, 171, 0.13) 1px, transparent 1px);
  background-size: 44px 44px;
  border-top: var(--edge);
  border-bottom: var(--edge);
  color: var(--ice-100);
}

.page-faq .faq-flow__inner {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-faq .faq-flow__kicker {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--mint);
}

.page-faq .faq-flow h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 44px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-flow__head > p:last-child {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--steel);
}

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

.page-faq .faq-steps li {
  position: relative;
  padding: 20px;
  background: var(--ink-800);
  border: 2px solid rgba(131, 148, 171, 0.45);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35);
}

.page-faq .faq-steps__n {
  display: inline-block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-steps h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.4;
  color: var(--paper);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-step__arrow {
  position: absolute;
  right: -22px;
  top: 50%;
  width: 18px;
  height: 18px;
  transform: translateY(-50%);
  color: var(--mint);
  display: none;
}

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

.page-faq .faq-flow__figure img {
  width: 100%;
  border: 2px solid rgba(131, 148, 171, 0.6);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35);
  object-fit: cover;
}

.page-faq .faq-flow__figure figcaption {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-top: 16px;
}

.page-faq .faq-flow__statnum {
  font-family: var(--font-mono);
  font-size: clamp(56px, 10vw, 96px);
  line-height: 0.85;
  color: var(--mint);
}

.page-faq .faq-flow__statlabel {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--steel);
}

/* ---------- 排查清单 ---------- */
.page-faq .faq-triage {
  padding: clamp(40px, 7vw, 88px) 0;
  background: var(--ice-100);
}

.page-faq .faq-triage__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  margin-bottom: 28px;
}

.page-faq .faq-triage__head .faq-group__num {
  grid-row: span 2;
  background: var(--ink-900);
  color: var(--mint);
}

.page-faq .faq-triage__head h2 {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--ink-900);
}

.page-faq .faq-triage__head p {
  grid-column: 2;
  margin: 8px 0 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-check {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-check li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  padding: 20px;
  background: var(--paper);
  border: var(--edge);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-check__mark {
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
  color: var(--ink-900);
  background: var(--orange);
  border: var(--edge);
}

.page-faq .faq-check h3 {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
  color: var(--ink-900);
}

.page-faq .faq-check p {
  grid-column: 2;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 联系 ---------- */
.page-faq .faq-reach {
  padding: clamp(40px, 7vw, 88px) 0;
  background: var(--ink-900);
  color: var(--ice-100);
}

.page-faq .faq-reach__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-reach h2 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-reach__lede {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.75;
  color: var(--steel);
}

.page-faq .faq-reach__list {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
}

.page-faq .faq-reach__list div {
  padding-left: 14px;
  border-left: 3px solid var(--orange);
}

.page-faq .faq-reach__list dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--mint);
}

.page-faq .faq-reach__list dd {
  margin: 4px 0 0;
  font-size: 16px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-faq .faq-reach__note {
  align-self: start;
  padding: 22px;
  background: var(--ink-800);
  border: 2px solid rgba(131, 148, 171, 0.5);
  box-shadow: 6px 6px 0 rgba(0, 0, 0, 0.35);
}

.page-faq .faq-reach__note h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 19px;
  color: var(--paper);
}

.page-faq .faq-reach__note p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ice-100);
}

.page-faq .faq-reach__note .btn {
  margin-top: 6px;
}

@media (min-width: 720px) {
  .page-faq .faq-check {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-check li:first-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--top-h) + 20px);
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 4px;
  }

  .page-faq .faq-toc__list a {
    width: 100%;
  }

  .page-faq .faq-reach__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-flow__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-flow__head {
    grid-column: 1 / -1;
  }

  .page-faq .faq-flow__figure {
    grid-column: 2;
    grid-row: 2;
  }

  .page-faq .faq-steps {
    grid-column: 1;
    grid-row: 2;
  }

  .page-faq .faq-steps li:not(:last-child) .faq-step__arrow {
    display: block;
  }

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

  .page-faq .faq-check li:first-child {
    grid-column: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa::before,
  .page-faq .qa > summary,
  .page-faq .faq-chips a,
  .page-faq .faq-toc__list a {
    transition: none;
  }

  .page-faq .faq-chips a:hover {
    transform: none;
  }
}