.page-faq {
  --faq-line: rgba(143, 184, 171, 0.2);
  --faq-line-soft: rgba(143, 184, 171, 0.12);
  --faq-surface: rgba(15, 58, 49, 0.34);
  --faq-surface-strong: rgba(15, 58, 49, 0.62);
  --faq-text: #EAF6F1;
  --faq-text-dim: rgba(234, 246, 241, 0.76);
  color: var(--faq-text);
  padding-bottom: clamp(2.4rem, 6vw, 4.5rem);
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0 0 1.1rem;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.page-faq .faq-crumb li:not(:last-child)::after {
  content: "/";
  margin-left: 0.45rem;
  color: rgba(143, 184, 171, 0.45);
}

.page-faq .faq-crumb a {
  color: var(--cyan);
  text-decoration: none;
}

.page-faq .faq-crumb a:hover,
.page-faq .faq-crumb a:focus-visible {
  text-decoration: underline;
  text-underline-offset: 0.22em;
}

/* ---------- 首屏诊断台 ---------- */

.page-faq .faq-hero {
  padding: clamp(1.2rem, 3.5vw, 2.2rem) 0 0;
}

.page-faq .faq-hero__panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  padding: clamp(1.4rem, 4vw, 3rem);
  background:
    radial-gradient(120% 150% at 6% 0%, rgba(57, 242, 208, 0.17), transparent 56%),
    radial-gradient(95% 130% at 100% 100%, rgba(255, 157, 69, 0.16), transparent 62%),
    linear-gradient(158deg, var(--forest) 0%, var(--ink) 72%);
}

.page-faq .faq-hero__panel::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(57, 242, 208, 0.07) 0 1px,
    transparent 1px 6px
  );
  -webkit-mask-image: linear-gradient(to bottom, #000, transparent 62%);
  mask-image: linear-gradient(to bottom, #000, transparent 62%);
  opacity: 0.7;
}

.page-faq .faq-hero__panel > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 0.55rem 0 1rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.95rem, 6vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.012em;
  color: var(--mist);
  max-width: 20em;
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 46em;
  font-size: clamp(0.95rem, 2.2vw, 1.06rem);
  line-height: 1.8;
  color: var(--faq-text-dim);
}

.page-faq .faq-tools {
  margin-top: clamp(1.3rem, 3.4vw, 2rem);
  padding-top: clamp(1rem, 2.6vw, 1.4rem);
  border-top: 1px solid var(--faq-line-soft);
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-tools__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .faq-tools__pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.page-faq .faq-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  background: rgba(7, 17, 15, 0.55);
  color: var(--mist);
  font-size: 0.88rem;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-pill:hover,
.page-faq .faq-pill:focus-visible {
  border-color: var(--cyan);
  background: rgba(57, 242, 208, 0.14);
  transform: translateY(-1px);
}

.page-faq .faq-pill__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--amber);
}

/* ---------- 诊断台双栏 ---------- */

.page-faq .faq-console {
  display: grid;
  gap: 1.5rem;
  padding-top: clamp(1.6rem, 4vw, 2.8rem);
}

.page-faq .faq-rail {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: var(--faq-surface);
  padding: 1rem 0.9rem;
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0 0 0.65rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--sage);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 0.4rem;
  margin: 0;
  padding: 0 0 0.3rem;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list li {
  flex: none;
}

.page-faq .faq-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 0.45rem;
  padding: 0.45rem 0.75rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--mist);
  font-size: 0.86rem;
  white-space: nowrap;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  border-color: rgba(57, 242, 208, 0.5);
  background: rgba(57, 242, 208, 0.1);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--cyan);
}

.page-faq .faq-rail__count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--sage);
}

.page-faq .faq-rail__note {
  display: none;
  margin: 0.9rem 0 0;
  padding-top: 0.8rem;
  border-top: 1px solid var(--faq-line-soft);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--sage);
}

.page-faq .faq-flow {
  min-width: 0;
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  margin-bottom: clamp(2rem, 5vw, 3.2rem);
  scroll-margin-top: 92px;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  padding-bottom: 0.85rem;
  margin-bottom: 1.1rem;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 4vw, 1.85rem);
  line-height: 1;
  color: var(--cyan);
  flex: none;
}

.page-faq .faq-group--sync .faq-group__no {
  color: var(--amber);
}

.page-faq .faq-group--saved .faq-group__no {
  color: var(--lime);
}

.page-faq .faq-group--data .faq-group__no {
  color: #EBA8C6;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.2;
  color: var(--mist);
}

.page-faq .faq-group__hint {
  margin: 0.3rem 0 0;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--faq-text-dim);
}

/* ---------- 问答手风琴 ---------- */

.page-faq .qa {
  border: 1px solid var(--faq-line);
  border-left: 3px solid rgba(143, 184, 171, 0.26);
  border-radius: var(--radius-md);
  background: var(--faq-surface);
  margin-bottom: 0.65rem;
  transition: border-color 0.22s var(--ease), background 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
  background: var(--faq-surface-strong);
  box-shadow: 0 16px 34px -26px rgba(0, 0, 0, 0.95);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding: 0.95rem 1rem;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
  border-radius: var(--radius-md);
}

.page-faq .qa__idx {
  flex: none;
  padding-top: 0.15rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--amber);
}

.page-faq .qa__q {
  flex: 1;
  font-size: 0.97rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--mist);
}

.page-faq .qa__chev {
  flex: none;
  width: 9px;
  height: 9px;
  margin-top: 0.38rem;
  border-right: 2px solid var(--sage);
  border-bottom: 2px solid var(--sage);
  transform: rotate(45deg);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease);
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-faq .qa__body {
  padding: 0 1rem 1.1rem;
  font-size: 0.93rem;
  line-height: 1.78;
  color: var(--faq-text-dim);
  animation: faq-body-in 0.24s var(--ease);
}

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

.page-faq .qa__steps {
  display: grid;
  gap: 0.5rem;
  margin: 0.2rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa__steps li {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
}

.page-faq .qa__step {
  flex: none;
  min-width: 1.4em;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.72;
  color: var(--cyan);
}

.page-faq .qa__body .qa__steps + p {
  margin-top: 0.7rem;
}

.page-faq .qa__note {
  margin: 0.75rem 0 0;
  padding: 0.6rem 0.8rem;
  border-left: 2px solid var(--amber);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(255, 157, 69, 0.1);
  font-size: 0.86rem;
  line-height: 1.7;
  color: rgba(234, 246, 241, 0.88);
}

@keyframes faq-body-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 1.1rem;
}

.page-faq .faq-figure .media-frame,
.page-faq .faq-figure {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: linear-gradient(150deg, rgba(33, 27, 77, 0.5), rgba(7, 17, 15, 0.85));
}

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

.page-faq .faq-figure .media-frame__caption {
  display: block;
  padding: 0.6rem 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--sage);
}

.page-faq .faq-split {
  display: grid;
  gap: 1.1rem;
}

.page-faq .faq-split__main {
  min-width: 0;
}

.page-faq .faq-figure--side {
  margin-bottom: 0;
}

/* ---------- 章节内联链接 ---------- */

.page-faq .faq-inline-link {
  margin: 0.9rem 0 0;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--faq-text-dim);
}

.page-faq .faq-inline-link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 242, 208, 0.4);
}

.page-faq .faq-inline-link a:hover,
.page-faq .faq-inline-link a:focus-visible {
  border-bottom-color: var(--cyan);
}

/* ---------- 联系支持 ---------- */

.page-faq .faq-support {
  border: 1px solid rgba(255, 157, 69, 0.28);
  border-radius: var(--radius-lg);
  padding: clamp(1.2rem, 3.4vw, 2rem);
  background:
    radial-gradient(110% 130% at 100% 0%, rgba(255, 157, 69, 0.16), transparent 58%),
    linear-gradient(155deg, rgba(74, 23, 48, 0.78), rgba(7, 17, 15, 0.92));
}

.page-faq .faq-support .faq-group__no {
  color: var(--amber);
}

.page-faq .faq-support .faq-group__head {
  border-bottom-color: rgba(255, 157, 69, 0.3);
}

.page-faq .support-grid {
  display: grid;
  gap: 1rem;
}

.page-faq .support-item {
  padding-left: 0.8rem;
  border-left: 2px solid rgba(255, 157, 69, 0.75);
}

.page-faq .support-item__label {
  margin: 0 0 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .support-item__value {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.72;
  color: var(--mist);
  overflow-wrap: anywhere;
}

.page-faq .support-prep {
  margin-top: 1.3rem;
  padding-top: 1.1rem;
  border-top: 1px solid rgba(255, 157, 69, 0.22);
}

.page-faq .support-prep__title {
  margin: 0 0 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .support-prep__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.page-faq .support-prep__list li {
  position: relative;
  padding-left: 1.1rem;
  font-size: 0.9rem;
  line-height: 1.72;
  color: var(--faq-text-dim);
}

.page-faq .support-prep__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--lime);
}

/* ---------- 响应式 ---------- */

@media (min-width: 620px) {
  .page-faq .support-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .qa__body {
    padding: 0 1.15rem 1.15rem 2.35rem;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 250px;
    align-items: start;
  }

  .page-faq .faq-figure--side {
    position: sticky;
    top: 96px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-console {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: clamp(1.6rem, 3vw, 2.6rem);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    padding: 1.1rem 1rem;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 0.15rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail__list a {
    justify-content: flex-start;
    white-space: normal;
    padding: 0.5rem 0.6rem;
  }

  .page-faq .faq-rail__name {
    flex: 1;
  }

  .page-faq .faq-rail__note {
    display: block;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 280px;
  }
}

@media (min-width: 1100px) {
  .page-faq .qa__q {
    font-size: 1rem;
  }

  .page-faq .qa__body {
    font-size: 0.95rem;
  }
}

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

  .page-faq .qa__body {
    animation: none;
  }

  .page-faq .faq-pill:hover,
  .page-faq .faq-pill:focus-visible {
    transform: none;
  }
}