.page-faq {
  --faq-cut: polygon(14px 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%, 0 14px);
  --faq-cut-sm: polygon(6px 0, 100% 0, 100% calc(100% - 6px), calc(100% - 6px) 100%, 0 100%, 0 6px);
  background: var(--cream-100);
  color: var(--ink-900);
}

.page-faq .breadcrumbs {
  padding-top: clamp(18px, 3vw, 34px);
}
.page-faq .breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}
.page-faq .breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.page-faq .breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--graphite-600);
}
.page-faq .breadcrumb-link {
  color: var(--graphite-600);
  text-decoration: none;
  transition: color 160ms var(--ease);
}
.page-faq .breadcrumb-link:hover,
.page-faq .breadcrumb-link:focus-visible {
  color: var(--coral-700);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(24px, 4vw, 52px) clamp(40px, 6vw, 88px);
}
.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 5vw, 56px);
  min-width: 0;
}
.page-faq .faq-hero-main {
  min-width: 0;
}
.page-faq .faq-hero-main .label {
  display: block;
  margin-bottom: 14px;
}
.page-faq .faq-hero-main .display-title {
  margin: 0 0 clamp(16px, 2.2vw, 24px);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 6.4vw, 84px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  overflow-wrap: break-word;
}
.page-faq .faq-hero-main .lede {
  max-width: 34em;
  margin: 0 0 clamp(20px, 3vw, 30px);
  font-size: clamp(16px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--ink-700);
}
.page-faq .button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero-side {
  min-width: 0;
  padding: clamp(22px, 3vw, 32px);
  background: var(--ink-900);
  color: var(--cream-100);
  clip-path: var(--faq-cut);
}
.page-faq .faq-side-label {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan-400);
}
.page-faq .faq-side-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-side-link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-ink);
  color: var(--cream-100);
  text-decoration: none;
  font-size: 15px;
  line-height: 1.55;
  transition: color 160ms var(--ease), padding-left 160ms var(--ease);
}
.page-faq .faq-side-list li:last-child .faq-side-link {
  border-bottom: none;
  padding-bottom: 4px;
}
.page-faq .faq-side-link .mono {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-400);
}
.page-faq .faq-side-link:hover,
.page-faq .faq-side-link:focus-visible {
  color: var(--cyan-400);
  padding-left: 6px;
}
.page-faq .faq-side-note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(246, 241, 230, 0.72);
}

/* ---------- 双栏正文 ---------- */
.page-faq .faq-body {
  padding-block: clamp(28px, 5vw, 64px) clamp(64px, 9vw, 136px);
}
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  align-items: start;
}
.page-faq .faq-index {
  display: none;
}
.page-faq .faq-index-title {
  margin: 0 0 12px;
  padding-left: 13px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--graphite-600);
}
.page-faq .faq-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 0 9px 12px;
  border-left: 1px solid var(--line-soft);
  color: var(--graphite-600);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.5;
  transition: color 160ms var(--ease), border-left-color 160ms var(--ease), background 160ms var(--ease);
}
.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  color: var(--ink-900);
  border-left-color: var(--coral-500);
  background: var(--cream-200);
}
.page-faq .faq-index-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--coral-700);
}

.page-faq .faq-flow {
  display: grid;
  gap: clamp(56px, 8vw, 104px);
  min-width: 0;
}

.page-faq .faq-step {
  display: flex;
  flex-direction: column;
  gap: clamp(18px, 2.4vw, 26px);
  scroll-margin-top: 96px;
  min-width: 0;
}
.page-faq .faq-step-head {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-step-num {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--coral-500);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}
.page-faq .faq-step-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(21px, 2.8vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.01em;
}
.page-faq .faq-step .text-body {
  max-width: 38em;
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-700);
}

/* ---------- 下载前确认清单 ---------- */
.page-faq .check-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}
.page-faq .check-label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 14px 18px;
  background: var(--cream-200);
  clip-path: var(--faq-cut-sm);
  cursor: pointer;
  font-size: 15.5px;
  line-height: 1.7;
  color: var(--ink-900);
  transition: background 160ms var(--ease);
}
.page-faq .check-label:hover {
  background: #E2D7BF;
}
.page-faq .check-box {
  appearance: none;
  -webkit-appearance: none;
  flex: none;
  position: relative;
  width: 19px;
  height: 19px;
  margin: 3px 0 0;
  border: 1.5px solid var(--ink-700);
  background: var(--white);
  clip-path: var(--faq-cut-sm);
  cursor: pointer;
  transition: background 160ms var(--ease), border-color 160ms var(--ease);
}
.page-faq .check-box:checked {
  background: var(--cyan-400);
  border-color: var(--cyan-600);
}
.page-faq .check-box:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink-900);
  border-bottom: 2px solid var(--ink-900);
  transform: rotate(42deg);
}
.page-faq .check-box:focus-visible {
  outline: 2px solid var(--azure-500);
  outline-offset: 2px;
}

/* ---------- 编号步骤 ---------- */
.page-faq .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .step-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed var(--line-soft);
}
.page-faq .step-item:first-child {
  padding-top: 2px;
}
.page-faq .step-item:last-child {
  border-bottom: none;
  padding-bottom: 2px;
}
.page-faq .step-index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border: 1px solid var(--cyan-600);
  color: var(--cyan-600);
  font-family: var(--font-mono);
  font-size: 12px;
  clip-path: var(--faq-cut-sm);
}
.page-faq .step-text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--ink-900);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
  min-width: 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--cream-200);
  clip-path: var(--faq-cut);
}
.page-faq .faq-figure .media-caption {
  display: block;
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--graphite-600);
}

/* ---------- 导出记录三栏 ---------- */
.page-faq .record-cols {
  margin: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}
.page-faq .record-col {
  position: relative;
  padding: 18px 18px 20px;
  background: var(--cream-200);
  clip-path: var(--faq-cut);
}
.page-faq .record-col::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 38px;
  height: 3px;
  background: var(--cyan-400);
}
.page-faq .record-term {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--ink-700);
}
.page-faq .record-desc {
  margin: 10px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-700);
}

/* ---------- 三层排查 ---------- */
.page-faq .trouble-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  min-width: 0;
}
.page-faq .trouble-list {
  margin: 0;
  padding: 0;
  list-style: none;
  min-width: 0;
}
.page-faq .trouble-layer {
  padding: 18px 20px 20px;
  background: var(--cream-200);
  clip-path: var(--faq-cut);
}
.page-faq .trouble-layer:nth-child(2) {
  margin-top: 12px;
  margin-left: clamp(0px, 5%, 34px);
  background: #E2D7BF;
}
.page-faq .trouble-layer:nth-child(3) {
  margin-top: 12px;
  margin-left: clamp(0px, 10%, 68px);
  background: var(--white);
  box-shadow: inset 0 0 0 1px var(--coral-500);
}
.page-faq .trouble-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.page-faq .trouble-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--coral-700);
}
.page-faq .trouble-name {
  margin: 0;
  font-size: clamp(17px, 2vw, 20px);
  font-weight: 600;
  color: var(--ink-900);
}
.page-faq .trouble-checks {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.page-faq .trouble-checks > li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-700);
}
.page-faq .trouble-checks > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 6px;
  height: 6px;
  background: var(--cyan-600);
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
}

/* ---------- 反馈 ---------- */
.page-faq .feedback-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}
.page-faq .feedback-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--ink-900);
}
.page-faq .feedback-dot {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 0.62em;
  border-radius: 50%;
  background: var(--coral-500);
}
.page-faq .faq-callout {
  display: grid;
  justify-items: start;
  gap: 14px;
  padding: clamp(22px, 3vw, 32px);
  background: var(--ink-900);
  color: var(--cream-100);
  clip-path: var(--faq-cut);
}
.page-faq .faq-callout-text {
  margin: 0;
  max-width: 36em;
  font-size: 15.5px;
  line-height: 1.8;
}
.page-faq .faq-callout-link {
  display: inline-block;
  padding-bottom: 2px;
  color: var(--cyan-400);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-400);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.page-faq .faq-callout-link:hover,
.page-faq .faq-callout-link:focus-visible {
  color: var(--white);
  border-bottom-color: var(--white);
}

/* ---------- 教程更新 ---------- */
.page-faq .update-stats {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}
.page-faq .update-stat {
  display: grid;
  gap: 6px;
  padding: 18px 18px 20px;
  background: var(--cream-200);
  clip-path: var(--faq-cut);
}
.page-faq .update-stat:first-child {
  background: var(--ink-900);
  color: var(--cream-100);
}
.page-faq .update-stat:first-child .update-num {
  color: var(--cyan-400);
}
.page-faq .update-stat:first-child .update-label {
  color: rgba(246, 241, 230, 0.74);
}
.page-faq .update-num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  letter-spacing: -0.02em;
  color: var(--ink-900);
}
.page-faq .update-label {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--graphite-600);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .record-cols {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .update-stats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
  .page-faq .trouble-grid {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 180px minmax(0, 1fr);
  }
  .page-faq .faq-index {
    display: block;
    position: sticky;
    top: 104px;
  }
}

@media (min-width: 1320px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-side-link,
  .page-faq .faq-index-link,
  .page-faq .check-label,
  .page-faq .check-box,
  .page-faq .breadcrumb-link,
  .page-faq .faq-callout-link {
    transition-duration: 120ms;
  }
}