.page-faq {
  padding-bottom: clamp(40px, 7vw, 88px);
}

.page-faq .breadcrumbs {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 4vw, 40px) 0 clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 104px;
  height: 3px;
  background: var(--electric-teal);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  color: var(--ink-blue);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.08;
}

.page-faq .faq-hero .lead {
  margin: 18px 0 0;
  max-width: 64ch;
  color: var(--graphite);
}

.page-faq .faq-hero__meta {
  margin: 22px 0 0;
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--gray-500);
}

/* ---------- 主体栅格：左侧目录 + 右侧手册 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(24px, 5vw, 52px);
  padding-top: clamp(26px, 5vw, 48px);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 216px minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 目录 ---------- */
.page-faq .faq-toc {
  border-top: 2px solid var(--anchor-blue);
  padding-top: 14px;
}

@media (min-width: 1000px) {
  .page-faq .faq-toc {
    position: sticky;
    top: calc(var(--frame-h) + var(--status-h) + 22px);
  }
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .faq-toc__list li {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-toc__list a {
  display: block;
  padding: 10px 8px 10px 12px;
  border-left: 2px solid transparent;
  color: var(--graphite);
  font-size: 15px;
  line-height: 1.45;
  text-decoration: none;
  transition: background-color 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-toc__list a:hover {
  background: var(--gray-100);
}

.page-faq .faq-toc__list a[aria-current="page"] {
  border-left-color: var(--electric-teal);
  background: rgba(18, 210, 195, 0.12);
  color: var(--anchor-blue);
  font-weight: 700;
}

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

@media (min-width: 1000px) {
  .page-faq .faq-toc__note {
    display: block;
    margin: 22px 0 0;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gray-500);
    writing-mode: vertical-rl;
  }
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-block {
  padding: clamp(30px, 4.5vw, 52px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--frame-h) + var(--status-h) + 20px);
}

.page-faq .faq-block:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .faq-block__head {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-block__head h2 {
  margin: 10px 0 0;
  color: var(--ink-blue);
  letter-spacing: -0.01em;
}

.page-faq .faq-sub {
  margin: clamp(28px, 4vw, 42px) 0 14px;
  padding-left: 12px;
  border-left: 3px solid var(--signal-orange);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--ink-blue);
}

/* ---------- 三步快速开始 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .step {
  position: relative;
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  column-gap: 16px;
  padding-bottom: 28px;
}

.page-faq .step__num {
  grid-row: 1 / span 3;
  grid-column: 1;
  font-size: clamp(30px, 5.5vw, 44px);
  line-height: 0.92;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--anchor-blue);
}

.page-faq .step > *:not(.step__num) {
  grid-column: 2;
}

.page-faq .step__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--graphite);
}

.page-faq .step p {
  margin: 0 0 10px;
  color: var(--graphite);
}

.page-faq .step a {
  color: var(--anchor-blue);
}

.page-faq .step__check {
  padding: 9px 12px;
  border-left: 2px solid var(--electric-teal);
  background: rgba(18, 210, 195, 0.09);
  font-size: 14.5px;
  color: var(--ink-blue);
}

.page-faq .step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 48px;
  bottom: 4px;
  width: 1px;
  background: var(--line-strong);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: clamp(22px, 3.5vw, 34px) 0 0;
  border: 1px solid var(--line);
  background: var(--gray-100);
}

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

/* ---------- 双端视图对照 ---------- */
.page-faq .view-card {
  padding: 20px 22px;
  border-top: 3px solid var(--anchor-blue);
  background: var(--white);
}

.page-faq .view-card--mob {
  border-top-color: var(--gray-500);
}

.page-faq .view-card ul {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.page-faq .view-card li {
  position: relative;
  padding: 8px 0 8px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.6;
  color: var(--graphite);
}

.page-faq .view-card li:last-child {
  border-bottom: none;
}

.page-faq .view-card li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  background: var(--electric-teal);
}

.page-faq .view-card--mob li::before {
  background: var(--gray-500);
}

/* ---------- 字段阅读顺序 ---------- */
.page-faq .order-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .order-list li {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--graphite);
}

.page-faq .order-list .mono {
  flex: none;
  font-weight: 700;
  color: var(--anchor-blue);
}

/* ---------- 异常处理 ---------- */
.page-faq .fault-list {
  display: grid;
}

.page-faq .fault {
  display: grid;
  gap: 5px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}

@media (min-width: 780px) {
  .page-faq .fault {
    grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
    gap: 0 26px;
    align-items: baseline;
  }
}

.page-faq .fault__sym {
  margin: 0;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--signal-orange);
}

.page-faq .fault__fix {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--graphite);
}

/* ---------- 三种检索方式 ---------- */
.page-faq .modes {
  display: grid;
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
}

@media (min-width: 780px) {
  .page-faq .modes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .mode {
  padding: 22px 20px 24px;
  background: var(--white);
}

.page-faq .mode__idx {
  display: inline-block;
  padding: 3px 9px;
  background: var(--anchor-blue);
  color: var(--white);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.page-faq .mode h3 {
  margin: 14px 0 8px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-faq .mode p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--graphite);
}

.page-faq .export-panel {
  margin-top: clamp(22px, 3.5vw, 32px);
}

.page-faq .export-panel .panel-body p {
  margin: 0 0 10px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--graphite);
}

.page-faq .export-panel .panel-body p:last-child {
  margin-bottom: 0;
}

/* ---------- 分类问答 ---------- */
.page-faq .qa-groups {
  display: grid;
  gap: clamp(24px, 3.5vw, 36px);
}

.page-faq .qa-group {
  padding-top: 14px;
  border-top: 2px solid var(--ink-blue);
}

.page-faq .qa-group__title {
  margin: 0 0 4px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ink-blue);
}

.page-faq .qa {
  border-bottom: 1px solid var(--line);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--graphite);
  transition: color 0.18s ease;
}

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

.page-faq .qa summary::before {
  content: "";
  flex: none;
  width: 0;
  height: 0;
  margin-top: 7px;
  border-left: 7px solid var(--anchor-blue);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
  transition: transform 0.18s ease, border-left-color 0.18s ease;
}

.page-faq .qa[open] summary::before {
  transform: rotate(90deg);
  border-left-color: var(--signal-orange);
}

.page-faq .qa summary:hover {
  color: var(--anchor-blue);
}

.page-faq .qa p {
  margin: 0 0 18px 19px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray-500);
}

/* ---------- 仍未解决 ---------- */
.page-faq .cta-panel {
  display: grid;
  gap: 22px;
  padding: clamp(24px, 4vw, 40px);
  border-left: 4px solid var(--signal-orange);
  background: var(--ink-blue);
  color: var(--white);
}

@media (min-width: 860px) {
  .page-faq .cta-panel {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    align-items: center;
    gap: 34px;
  }
}

.page-faq .cta-panel .mono-label {
  color: var(--electric-teal);
}

.page-faq .cta-panel__text h2 {
  margin: 12px 0 0;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-faq .cta-panel__text p {
  margin: 14px 0 0;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(231, 234, 238, 0.82);
}

.page-faq .cta-panel__act {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .cta-panel__act .btn {
  text-align: center;
}

.page-faq .cta-panel .btn-ghost {
  color: var(--white);
  border-color: rgba(231, 234, 238, 0.42);
}

@media (min-width: 520px) and (max-width: 859px) {
  .page-faq .cta-panel__act {
    flex-direction: row;
  }
}

.page-faq .escalate-note {
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--gray-500);
}

.page-faq .escalate-note a {
  color: var(--anchor-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}
</main>