.page-faq {
  background: var(--ink);
  color: var(--snow);
}

.page-faq .crumbs {
  padding-top: clamp(18px, 2.4vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(28px, 4vw, 56px);
  padding-bottom: clamp(24px, 3.4vw, 48px);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  max-width: 20ch;
  font-size: clamp(2rem, 5.6vw, 3.9rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  font-weight: 900;
}

.page-faq .faq-hero__lead {
  margin-top: clamp(18px, 2.2vw, 26px);
  max-width: 68ch;
  color: var(--mist);
  font-size: clamp(1rem, 1.2vw, 1.06rem);
  line-height: 1.85;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  margin-top: clamp(28px, 3.6vw, 48px);
  border-top: 2px solid var(--line-strong);
}

.page-faq .faq-jump__item {
  flex: 1 1 170px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 15px 16px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  color: var(--snow);
  text-decoration: none;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.18s ease, color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-jump__item:hover,
.page-faq .faq-jump__item:focus-visible {
  background: var(--panel);
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

/* ---------- 章节骨架 ---------- */

.page-faq .faq-block {
  border-top: 2px solid var(--line-strong);
}

.page-faq .faq-block__head {
  max-width: 66ch;
}

.page-faq .faq-block__head h2 {
  margin: 14px 0 0;
  font-size: clamp(1.5rem, 3vw, 2.3rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  font-weight: 900;
}

.page-faq .faq-block__head .lead {
  margin-top: 14px;
  color: var(--mist);
  line-height: 1.8;
  font-size: 0.98rem;
}

.page-faq .faq-block__head .lead a,
.page-faq .qa__body a,
.page-faq .step-list__item a,
.page-faq .contact-slab__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
  transition: border-color 0.18s ease, color 0.18s ease;
}

.page-faq .qa__body a:hover,
.page-faq .step-list__item a:hover,
.page-faq .contact-slab__note a:hover {
  border-bottom-color: var(--orange);
  color: var(--orange);
}

.page-faq .faq-block__split {
  display: grid;
  gap: var(--gap);
  margin-top: clamp(24px, 3vw, 42px);
}

/* ---------- 编号步骤（纵向） ---------- */

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

.page-faq .step-list__item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 18px;
  padding: 22px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .step-list__num {
  grid-column: 1;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  transition: color 0.18s ease;
}

.page-faq .step-list__item:hover .step-list__num {
  color: var(--cyan);
}

.page-faq .step-list__item h3 {
  grid-column: 2;
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.page-faq .step-list__item p {
  grid-column: 2;
  margin: 8px 0 0;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.8;
}

/* ---------- 编号步骤（横向三格） ---------- */

.page-faq .step-row {
  display: grid;
  gap: 1px;
  margin-top: clamp(24px, 3vw, 42px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .step-row__cell {
  background: var(--ink);
  padding: 26px 22px 30px;
  transition: background 0.2s ease;
}

.page-faq .step-row__cell:hover {
  background: var(--panel);
}

.page-faq .step-row__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
}

.page-faq .step-row__cell h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
}

.page-faq .step-row__cell p {
  margin: 0;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.8;
}

/* ---------- 图形 ---------- */

.page-faq .faq-figure {
  margin: 0;
  align-self: start;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--mist);
}

/* ---------- 手风琴 ---------- */

.page-faq .qa-group {
  margin-top: clamp(26px, 3vw, 44px);
  border-top: 2px solid var(--cyan-line);
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .qa[open] {
  background: var(--panel);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding: 20px 14px 20px 4px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(0.98rem, 1.5vw, 1.1rem);
  font-weight: 700;
  line-height: 1.55;
  transition: color 0.18s ease, background 0.18s ease;
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-weight: 400;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--orange);
}

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

.page-faq .qa__q:hover,
.page-faq .qa__q:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .qa__num {
  flex: 0 0 auto;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-faq .qa__body {
  padding: 0 20px 24px 16px;
  color: var(--mist);
  font-size: 0.94rem;
  line-height: 1.85;
}

.page-faq .qa__body p {
  margin: 0 0 10px;
}

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

/* ---------- 联系信息板 ---------- */

.page-faq .contact-slab {
  margin-top: clamp(26px, 3vw, 42px);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--orange);
  background: var(--panel);
  padding: 6px clamp(16px, 2.4vw, 28px) clamp(18px, 2.4vw, 26px);
}

.page-faq .contact-slab__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .contact-slab__k {
  flex: 0 0 auto;
  min-width: 84px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.page-faq .contact-slab__v {
  flex: 1 1 220px;
  font-family: var(--font-mono);
  font-size: clamp(0.9rem, 1.6vw, 1.02rem);
  color: var(--snow);
  word-break: break-all;
}

.page-faq .contact-slab__note {
  margin: 20px 0 0;
  color: var(--mist);
  font-size: 0.92rem;
  line-height: 1.8;
}

/* ---------- 桌面布局 ---------- */

@media (min-width: 720px) {
  .page-faq .step-row {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-block__split {
    grid-template-columns: 1.12fr 0.88fr;
    align-items: start;
  }

  .page-faq .faq-block__split--flip {
    grid-template-columns: 0.88fr 1.12fr;
  }

  .page-faq .faq-figure img {
    aspect-ratio: 3 / 2;
  }

  .page-faq .qa__body {
    padding-left: 44px;
    padding-right: 32px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-block__split {
    gap: calc(var(--gap) * 1.6);
  }
}