.page-faq {
  background: var(--ink-900);
  color: var(--text);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(96px, 13vw, 150px) 0 clamp(40px, 6vw, 64px);
  isolation: isolate;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -18%;
  right: -12%;
  width: min(640px, 84vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle, rgba(53, 247, 155, 0.15) 0%, rgba(53, 247, 155, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  right: 0;
  bottom: 0;
  width: 44%;
  height: 76%;
  background: linear-gradient(160deg, rgba(138, 107, 255, 0.22), rgba(42, 31, 77, 0) 72%);
  clip-path: polygon(40% 0%, 100% 0%, 100% 100%, 0% 100%);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 30px;
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  max-width: 22ch;
  font-size: clamp(30px, 6.2vw, 62px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 400;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  font-weight: 800;
  color: var(--green);
  text-shadow: 0 0 26px rgba(53, 247, 155, 0.32);
}

.page-faq .faq-hero__lede {
  margin-top: 22px;
  max-width: 62ch;
}

.page-faq .faq-metrics {
  display: flex;
  flex-wrap: wrap;
  gap: 11px 34px;
  margin: clamp(30px, 5vw, 48px) 0 0;
  padding: 20px 0 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.page-faq .faq-metric {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.page-faq .faq-metric__val {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 17px;
  color: var(--green);
}

.page-faq .faq-metric__key {
  font-size: 13px;
  color: var(--text-3);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  padding-bottom: clamp(64px, 10vw, 128px);
}

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

/* ---------- 左侧索引 ---------- */
.page-faq .faq-rail__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-3);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 13px;
  color: var(--text-2);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: 2px;
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--green);
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 100px;
  }

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

  .page-faq .faq-rail__link {
    display: flex;
    width: 100%;
    padding: 11px 0 11px 15px;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    background: none;
    font-size: 13.5px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    border-left-color: var(--green);
    color: var(--text);
    background: linear-gradient(90deg, rgba(53, 247, 155, 0.09), rgba(53, 247, 155, 0));
  }
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-filterbar {
  position: sticky;
  top: 62px;
  z-index: 5;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-filterbar .chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-filterbar__count {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--text-3);
}

.page-faq .faq-filterbar__count [data-filter-count] {
  color: var(--green);
  font-weight: 700;
}

/* ---------- 排查区块 ---------- */
.page-faq .faq-block {
  position: relative;
  padding-top: clamp(24px, 4vw, 38px);
  margin-bottom: clamp(44px, 6.5vw, 78px);
  scroll-margin-top: 108px;
}

.page-faq .faq-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 52px;
  height: 2px;
  background: var(--line);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .faq-block:target::before {
  background: var(--green);
  box-shadow: 0 0 14px rgba(53, 247, 155, 0.5);
}

.page-faq .faq-block__head {
  display: flex;
  align-items: baseline;
  gap: 15px;
  margin-top: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-block__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(19px, 3vw, 27px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  text-shadow: 0 0 18px rgba(53, 247, 155, 0.42);
}

.page-faq .faq-block__title {
  margin: 0;
  font-size: clamp(21px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-block__verdict {
  margin: 18px 0 28px;
  padding: 14px 18px;
  border-left: 3px solid var(--violet);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: linear-gradient(90deg, rgba(138, 107, 255, 0.16), rgba(138, 107, 255, 0) 88%);
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-block__text {
  margin: 0 0 4px;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text-2);
}

/* ---------- 分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
}

@media (min-width: 880px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 292px);
    align-items: start;
  }
}

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: fstep;
}

.page-faq .faq-steps > li {
  position: relative;
  counter-increment: fstep;
  padding: 0 0 22px 44px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--text-2);
}

.page-faq .faq-steps > li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps > li::before {
  content: counter(fstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  z-index: 1;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--green-deep);
  border-radius: 50%;
  background: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  color: var(--green);
}

.page-faq .faq-steps > li::after {
  content: "";
  position: absolute;
  left: 13px;
  top: 33px;
  bottom: 4px;
  width: 1px;
  background: var(--line);
}

.page-faq .faq-steps > li:last-child::after {
  display: none;
}

.page-faq .faq-steps > li strong {
  color: var(--text);
  font-weight: 600;
}

/* ---------- 提示与警示 ---------- */
.page-faq .faq-notice {
  display: flex;
  gap: 10px;
  margin-top: 24px;
  padding: 13px 16px;
  border-left: 3px solid var(--green);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: rgba(53, 247, 155, 0.07);
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
}

.page-faq .faq-notice b {
  flex: none;
  font-weight: 600;
  color: var(--green);
}

.page-faq .faq-notice--warn {
  border-left-color: var(--orange);
  background: rgba(255, 122, 47, 0.09);
}

.page-faq .faq-notice--warn b {
  color: var(--orange);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-folds {
  margin-top: 30px;
}

.page-faq .faq-fold {
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--ink-800);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-fold + .faq-fold {
  margin-top: 10px;
}

.page-faq .faq-fold:hover {
  border-color: rgba(53, 247, 155, 0.4);
}

.page-faq .faq-fold[open] {
  border-color: rgba(53, 247, 155, 0.5);
}

.page-faq .faq-fold__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

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

.page-faq .faq-fold__sum:focus-visible {
  outline: 2px solid var(--violet);
  outline-offset: -2px;
}

.page-faq .faq-fold__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--green);
  transition: transform var(--dur) var(--ease);
}

.page-faq .faq-fold[open] .faq-fold__sum::after {
  transform: rotate(45deg);
}

.page-faq .faq-fold__body {
  padding: 0 18px 17px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--text-2);
}

.page-faq .faq-fold[open] .faq-fold__body {
  animation: faqFoldGrow var(--dur) var(--ease);
}

@keyframes faqFoldGrow {
  from {
    clip-path: inset(0 0 100% 0);
  }
  to {
    clip-path: inset(0 0 0 0);
  }
}

/* ---------- 配置档位 ---------- */
.page-faq .faq-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(142px, 1fr));
  gap: 12px;
  margin: 22px 0 30px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tier {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: var(--ink-800);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-tier:hover {
  border-color: var(--green);
  transform: translateY(-4px);
}

.page-faq .faq-tier__name {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.page-faq .faq-tier__ram {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  text-shadow: 0 0 16px rgba(53, 247, 155, 0.35);
}

.page-faq .faq-tier__note {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-3);
}

/* ---------- 侧栏方框 ---------- */
.page-faq .faq-aside {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-panel);
  background: linear-gradient(145deg, rgba(138, 107, 255, 0.14), rgba(6, 8, 11, 0) 66%),
    var(--ink-800);
}

.page-faq .faq-aside__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--violet);
}

.page-faq .faq-aside__text {
  margin: 12px 0 18px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-2);
}

/* ---------- 图形 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

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

.page-faq .faq-figure__cap {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-3);
}

.page-faq .faq-figure--full {
  margin: 0 0 clamp(44px, 6.5vw, 78px);
  padding-top: clamp(24px, 4vw, 38px);
  border-top: 1px solid var(--line);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-mail {
  padding: 22px 22px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-panel);
  background: linear-gradient(150deg, rgba(53, 247, 155, 0.13), rgba(6, 8, 11, 0) 62%),
    var(--ink-800);
}

.page-faq .faq-mail__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-mail__key {
  flex: none;
  min-width: 88px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--text-3);
}

.page-faq .faq-mail__val {
  font-size: 15px;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-mail .btn {
  margin-top: 18px;
  width: 100%;
  justify-content: center;
}

.page-faq .faq-note {
  margin-top: 26px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-3);
}

.page-faq .faq-note a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 247, 155, 0.4);
}

.page-faq .faq-note a:hover {
  border-bottom-color: var(--green);
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 600px) {
  .page-faq .faq-filterbar {
    top: 56px;
    padding: 12px 0;
  }

  .page-faq .faq-filterbar .chips {
    gap: 6px;
  }

  .page-faq .faq-steps > li {
    padding-left: 38px;
  }

  .page-faq .faq-steps > li::after {
    left: 12px;
  }

  .page-faq .faq-mail__key {
    min-width: 100%;
  }

  .page-faq .faq-notice {
    flex-direction: column;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }

  .page-faq .faq-fold[open] .faq-fold__body {
    clip-path: none;
  }
}