.page-faq {
  --faq-rule: rgba(143, 199, 223, .2);
  --faq-rule-soft: rgba(143, 199, 223, .1);
  --faq-glow: rgba(255, 107, 44, .16);
  background: var(--sea-900);
  color: var(--paper);
  overflow-x: clip;
}

.page-faq .band {
  padding-block: clamp(34px, 6vw, 72px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  padding-top: 18px;
  font-size: 13px;
}
.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  color: var(--ice-300);
}
.page-faq .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.page-faq .breadcrumbs a {
  color: var(--ice-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s, border-color .2s;
}
.page-faq .breadcrumbs a:hover,
.page-faq .breadcrumbs a:focus-visible {
  color: var(--orange-200);
  border-bottom-color: var(--orange-500);
}
.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 6px;
  opacity: .45;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(26px, 5vw, 60px) clamp(14px, 3vw, 30px);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -20px;
  right: 0;
  width: min(52vw, 400px);
  height: min(52vw, 400px);
  background: radial-gradient(circle at 72% 28%, var(--faq-glow), transparent 64%);
  pointer-events: none;
  z-index: 0;
}
.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 20px;
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange-200);
}
.page-faq .faq-hero__kicker::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--orange-500);
}
.page-faq .faq-hero__title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(34px, 6.4vw, 74px);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin: 0 0 20px;
  max-width: 16em;
  color: var(--paper);
}
.page-faq .faq-hero__lead {
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.8;
  max-width: 34em;
  margin: 0 0 24px;
  color: rgba(245, 241, 232, .8);
}
.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .faq-hero__tags li {
  padding: 5px 12px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--ice-300);
  background: rgba(18, 52, 77, .55);
  border: 1px solid var(--faq-rule);
  border-radius: 999px;
}

/* ---------- 章节头 ---------- */
.page-faq .faq-chapter {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.page-faq .faq-chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(40px, 7vw, 74px);
  line-height: .85;
  letter-spacing: -.03em;
  color: rgba(143, 199, 223, .18);
  -webkit-text-stroke: 1px rgba(143, 199, 223, .45);
}
.page-faq .faq-chapter__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--orange-200);
  padding: 4px 10px;
  border: 1px solid var(--faq-rule);
}
.page-faq .faq-chapter__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(22px, 3.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -.01em;
  margin: 0 0 24px;
  max-width: 20em;
}

/* ---------- 路径图 ---------- */
.page-faq .paths {
  display: grid;
  gap: 20px;
}
.page-faq .paths__cards {
  display: grid;
  gap: 16px;
}
.page-faq .path-card {
  position: relative;
  padding: 22px 20px 18px;
  background: linear-gradient(158deg, rgba(18, 52, 77, .96), rgba(11, 17, 25, .94));
  border: 1px solid var(--faq-rule);
  box-shadow: 7px 7px 0 rgba(143, 199, 223, .06);
}
.page-faq .path-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--orange-500);
}
.page-faq .path-card--desktop::before {
  background: repeating-linear-gradient(180deg, var(--ice-300) 0 6px, transparent 6px 13px);
}
.page-faq .path-card__kicker {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange-200);
}
.page-faq .path-card--desktop .path-card__kicker {
  color: var(--ice-300);
}
.page-faq .path-card__title {
  margin: 0;
  font-size: clamp(17px, 2.3vw, 21px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.005em;
}
.page-faq .path-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .path-step {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
}
.page-faq .path-step__n {
  display: block;
  height: 21px;
  line-height: 21px;
  font-size: 11px;
  text-align: center;
  font-weight: 600;
  color: var(--sea-900);
  background: var(--orange-500);
  border-radius: 2px;
}
.page-faq .path-card--desktop .path-step__n {
  color: var(--sea-900);
  background: var(--ice-300);
}
.page-faq .path-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(245, 241, 232, .8);
}
.page-faq .path-card__foot {
  margin: 18px 0 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--flag-yellow);
}
.page-faq .path-figure {
  margin: 0;
  position: relative;
}
.page-faq .path-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-rule);
  filter: saturate(.92) contrast(1.04);
}
.page-faq .paths__foot {
  margin: 22px 0 0;
  font-size: 14px;
  color: rgba(245, 241, 232, .62);
}
.page-faq .paths__foot a {
  color: var(--orange-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 44, .45);
}
.page-faq .paths__foot a:hover,
.page-faq .paths__foot a:focus-visible {
  color: var(--orange-500);
  border-bottom-color: var(--orange-500);
}

@media (min-width: 880px) {
  .page-faq .paths {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    gap: 26px;
    align-items: start;
  }
  .page-faq .path-figure {
    margin-top: 6px;
  }
}

/* ---------- 场景索引 ---------- */
.page-faq .manual__grid {
  display: grid;
  gap: 22px;
}
.page-faq .manual__toc-title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--ice-300);
}
.page-faq .toc {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.page-faq .toc a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  font-size: 13px;
  color: rgba(245, 241, 232, .76);
  text-decoration: none;
  border: 1px solid var(--faq-rule);
  border-radius: 999px;
  transition: color .2s, border-color .2s, background .2s;
}
.page-faq .toc a:hover,
.page-faq .toc a:focus-visible {
  color: var(--orange-200);
  border-color: rgba(255, 107, 44, .5);
  background: rgba(255, 107, 44, .08);
}
.page-faq .toc .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--flag-yellow);
}

@media (min-width: 980px) {
  .page-faq .manual__grid {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 58px);
    align-items: start;
  }
  .page-faq .manual__toc {
    position: sticky;
    top: 92px;
    padding-left: 16px;
    border-left: 1px solid var(--faq-rule);
  }
  .page-faq .toc {
    display: grid;
    gap: 2px;
  }
  .page-faq .toc a {
    justify-content: flex-start;
    padding: 9px 0;
    font-size: 14px;
    border: 0;
    border-radius: 0;
    border-bottom: 1px solid var(--faq-rule-soft);
  }
  .page-faq .toc a:hover,
  .page-faq .toc a:focus-visible {
    background: transparent;
    border-bottom-color: var(--orange-500);
  }
}

/* ---------- 问答组 ---------- */
.page-faq .qgroup {
  margin-bottom: clamp(30px, 5vw, 52px);
  scroll-margin-top: 96px;
}
.page-faq .qgroup__head {
  position: relative;
  padding-left: 42px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-rule-soft);
}
.page-faq .qgroup__n {
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.2;
  color: var(--orange-500);
}
.page-faq .qgroup__title {
  margin: 0 0 6px;
  font-size: clamp(18px, 2.6vw, 24px);
  font-weight: 700;
  line-height: 1.34;
  letter-spacing: -.005em;
}
.page-faq .qgroup__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 241, 232, .6);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  position: relative;
  margin-bottom: 10px;
  background: rgba(18, 52, 77, .55);
  border: 1px solid var(--faq-rule);
  border-radius: 3px;
  box-shadow: 5px 5px 0 rgba(143, 199, 223, .05);
  transition: background .2s, border-color .2s;
}
.page-faq .qa[open] {
  background: rgba(18, 52, 77, .82);
  border-color: rgba(255, 107, 44, .4);
}
.page-faq .qa__q {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  position: relative;
  margin: 0;
  padding: 15px 44px 15px 16px;
  font-family: var(--font-body);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
}
.page-faq .qa__q::-webkit-details-marker {
  display: none;
}
.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.3;
  color: var(--orange-500);
}
.page-faq .qa[open] .qa__q::after {
  content: "–";
}
.page-faq .qa__n {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.95;
  color: var(--flag-yellow);
}
.page-faq .qa__t {
  display: block;
}
.page-faq .qa__body {
  margin: 0 16px;
  padding: 14px 0 18px;
  border-top: 1px dashed var(--faq-rule-soft);
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 241, 232, .8);
}
.page-faq .qa__body p {
  margin: 0 0 10px;
}
.page-faq .qa__body p:last-child {
  margin-bottom: 0;
}
.page-faq .qa__body a {
  color: var(--orange-200);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 107, 44, .45);
}
.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  color: var(--orange-500);
  border-bottom-color: var(--orange-500);
}
.page-faq .qa__steps {
  list-style: none;
  margin: 12px 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.page-faq .qa__steps li {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}
.page-faq .qa__steps .mono {
  display: block;
  height: 19px;
  line-height: 19px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  text-align: center;
  color: var(--sea-900);
  background: var(--ice-300);
  border-radius: 2px;
}
.page-faq .qa__hint {
  margin: 12px 0 0;
  padding-left: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ice-300);
  border-left: 2px solid var(--orange-500);
}

/* ---------- 分支排查图 ---------- */
.page-faq .diag {
  margin: 16px 0;
  padding: 14px;
  background: rgba(11, 17, 25, .6);
  border: 1px dashed var(--faq-rule);
}
.page-faq .diag__cap {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--ice-300);
}
.page-faq .diag svg {
  display: block;
  width: 100%;
  height: auto;
}
.page-faq .diag__box {
  fill: rgba(18, 52, 77, .92);
  stroke: rgba(143, 199, 223, .38);
  stroke-width: 1;
}
.page-faq .diag__box--root {
  fill: rgba(255, 107, 44, .14);
  stroke: var(--orange-500);
}
.page-faq .diag__line {
  fill: none;
  stroke: rgba(143, 199, 223, .42);
  stroke-width: 1.5;
}
.page-faq .diag__line--alt {
  stroke-dasharray: 5 5;
}
.page-faq .diag__t {
  fill: var(--paper);
  font-family: var(--font-body);
  font-size: 13px;
}

/* ---------- 反馈检查清单 ---------- */
.page-faq .checklist {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}
.page-faq .checklist li {
  display: grid;
  grid-template-columns: 18px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}
.page-faq .checklist input[type="checkbox"] {
  width: 16px;
  height: 16px;
  margin: 4px 0 0;
  accent-color: var(--orange-500);
  cursor: pointer;
}
.page-faq .checklist label {
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 241, 232, .82);
  cursor: pointer;
}
.page-faq .checklist input:checked + label {
  color: rgba(245, 241, 232, .5);
  text-decoration: line-through;
  text-decoration-color: rgba(255, 107, 44, .6);
}

/* ---------- 双端索引配图 ---------- */
.page-faq .manual-figure {
  margin: 6px 0 clamp(30px, 5vw, 46px);
}
.page-faq .manual-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-rule);
  filter: saturate(.9) contrast(1.05);
}

/* ---------- 联系方式收束 ---------- */
.page-faq .contactbar {
  position: relative;
  padding: clamp(22px, 4vw, 42px);
  padding-right: clamp(22px, 4vw, 88px);
  background:
    linear-gradient(132deg, rgba(255, 107, 44, .16), rgba(18, 52, 77, .92) 62%),
    var(--trench-700);
  border: 1px solid rgba(255, 107, 44, .3);
  overflow: hidden;
}
.page-faq .contactbar::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 52px;
  height: 52px;
  background: linear-gradient(135deg, transparent 50%, var(--orange-500) 50%);
  opacity: .75;
  pointer-events: none;
}
.page-faq .contactbar__head {
  max-width: 40em;
}
.page-faq .contactbar__title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(22px, 3.6vw, 34px);
  line-height: 1.24;
  letter-spacing: -.01em;
}
.page-faq .contactbar__lead {
  margin: 0 0 22px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(245, 241, 232, .78);
}
.page-faq .contactbar__list {
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 2px;
}
.page-faq .contactbar__row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 9px 0;
  border-bottom: 1px dashed rgba(143, 199, 223, .18);
}
.page-faq .contactbar__row dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--flag-yellow);
}
.page-faq .contactbar__row dd {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--paper);
  word-break: break-word;
  user-select: all;
}
.page-faq .contactbar__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 760px) {
  .page-faq .contactbar__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .toc a,
  .page-faq .breadcrumbs a,
  .page-faq .qa {
    transition: none;
  }
}