.page-faq {
  --faq-rail: 250px;
  --faq-gap: clamp(18px, 2.6vw, 36px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
  padding: clamp(28px, 5vw, 56px) 0 clamp(34px, 5.5vw, 68px);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -8%;
  right: -14%;
  width: min(78vw, 600px);
  height: min(78vw, 600px);
  background: var(--indigo);
  opacity: 0.26;
  clip-path: polygon(34% 0, 100% 0, 100% 74%, 0 100%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-hero-copy .crumbs {
  margin: 0 0 18px;
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.95;
  color: var(--silver);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--frost);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-stats li {
  background: var(--ink-2);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .faq-stat-num {
  color: var(--cyan);
  font-size: 17px;
  letter-spacing: 0.04em;
}

.page-faq .faq-stat-label {
  color: var(--mist);
  font-size: 13px;
}

.page-faq .faq-hero-panel {
  align-self: end;
  border: 2px solid var(--line-strong);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
  padding: 22px 20px;
}

.page-faq .faq-panel-title {
  margin: 0;
  color: var(--mist);
  font-size: 12.5px;
  letter-spacing: 0.1em;
}

.page-faq .faq-status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 16px 0 0;
  color: var(--cyan);
  font-size: 14px;
}

.page-faq .faq-panel-list {
  margin: 16px 0 0;
}

.page-faq .faq-panel-list div {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-panel-list dt {
  color: var(--mist);
  font-size: 13.5px;
}

.page-faq .faq-panel-list dd {
  margin: 0;
  color: var(--frost);
  font-size: 14px;
  text-align: right;
}

/* ---------- 左导航 + 折叠问答 ---------- */
.page-faq .faq-rail-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  color: var(--mist);
  font-size: 12.5px;
  letter-spacing: 0.1em;
}

.page-faq .faq-rail-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 10px;
  scrollbar-width: thin;
}

.page-faq .faq-rail-link {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  color: var(--silver);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease);
}

.page-faq .faq-rail-link.is-active {
  border-color: var(--cyan);
  color: var(--frost);
}

.page-faq .faq-rail-link .nav-idx {
  color: var(--mist);
  font-size: 12px;
}

.page-faq .faq-qa-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  line-height: 1.2;
  color: var(--frost);
}

.page-faq .faq-qa-lede {
  margin: 0 0 34px;
  max-width: 58ch;
  color: var(--silver);
  font-size: 15.5px;
  line-height: 1.9;
}

.page-faq .faq-group {
  margin-bottom: 46px;
  scroll-margin-top: calc(var(--bar-h-min) + var(--index-h) + 24px);
}

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

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: 4px;
  border-bottom: 2px solid var(--line-strong);
}

.page-faq .faq-group-num {
  color: var(--cyan);
  font-size: 13px;
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.3vw, 25px);
  color: var(--frost);
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-q {
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-q > summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 36px 17px 0;
  cursor: pointer;
  list-style: none;
  color: var(--frost);
  font-size: 15.5px;
  line-height: 1.7;
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-q > summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 15px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
}

.page-faq .faq-q[open] > summary::after {
  content: "–";
}

.page-faq .faq-q[open] > summary {
  color: var(--cyan);
}

.page-faq .faq-q-idx {
  flex: 0 0 auto;
  padding-top: 5px;
  color: var(--mist);
  font-size: 12.5px;
}

.page-faq .faq-q .disclosure-body {
  padding: 0 36px 20px 30px;
  color: var(--silver);
  font-size: 14.8px;
  line-height: 1.9;
}

.page-faq .faq-q .disclosure-body p {
  margin: 0;
}

.page-faq .faq-q .disclosure-body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 反馈通道 + 登录指引 ---------- */
.page-faq .faq-action {
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-action-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-feedback,
.page-faq .faq-login {
  background: var(--ink);
  padding: clamp(18px, 2.6vw, 30px);
}

.page-faq .faq-feedback {
  border: 2px solid var(--wine);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-login {
  border: 2px solid var(--line);
}

.page-faq .faq-block-head h3 {
  margin: 8px 0 10px;
  font-family: var(--font-display);
  font-size: clamp(21px, 2.6vw, 27px);
  color: var(--frost);
}

.page-faq .faq-block-head p {
  margin: 0;
  max-width: 46ch;
  color: var(--silver);
  font-size: 14.8px;
  line-height: 1.9;
}

.page-faq .faq-block-tag {
  margin: 0;
  color: var(--mist);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-faq .faq-media {
  margin: 22px 0 0;
  border: 2px solid var(--line);
  box-shadow: var(--shadow-mid, 2px 2px 0 rgba(0, 0, 0, 0.5));
  background: var(--ink-2);
}

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

.page-faq .faq-fields {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-fields li {
  border-top: 2px solid var(--line);
  padding-top: 12px;
}

.page-faq .faq-field-idx {
  color: var(--cyan);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .faq-fields h4 {
  margin: 6px 0 6px;
  font-size: 15px;
  color: var(--frost);
}

.page-faq .faq-fields .field-hint {
  margin: 0;
  color: var(--mist);
  font-size: 13px;
  line-height: 1.75;
}

.page-faq .faq-sla {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-sla li {
  border: 1px solid var(--line-strong);
  padding: 7px 11px;
  font-size: 12.8px;
  color: var(--silver);
}

.page-faq .faq-feedback-flow {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--wine);
  color: var(--mist);
  font-size: 13.5px;
  line-height: 1.85;
}

/* ---------- 步骤条 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  counter-reset: faqstep;
}

.page-faq .faq-steps li {
  position: relative;
  padding: 0 0 22px 44px;
}

.page-faq .faq-steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--cyan);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-faq .faq-steps li::after {
  content: "";
  position: absolute;
  left: 14px;
  top: 34px;
  bottom: 4px;
  width: 2px;
  background: var(--line);
}

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

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

.page-faq .faq-steps h4 {
  margin: 3px 0 6px;
  font-size: 15px;
  color: var(--frost);
}

.page-faq .faq-steps p {
  margin: 0;
  color: var(--silver);
  font-size: 14px;
  line-height: 1.85;
}

.page-faq .faq-step-meta {
  display: inline-block;
  margin-top: 9px;
  padding: 3px 8px;
  border: 1px solid var(--line);
  color: var(--mist);
  font-size: 12px;
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support-band {
  background: var(--green);
  border-top: 2px solid var(--line);
  border-bottom: 2px solid var(--line);
}

.page-faq .faq-support {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-trigger {
  list-style: none;
  margin: 22px 0 26px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-trigger li {
  position: relative;
  padding-left: 22px;
  color: var(--frost);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-trigger li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 10px;
  background: var(--cyan);
}

.page-faq .faq-support-side {
  border: 2px solid var(--line-strong);
  background: rgba(10, 18, 36, 0.55);
  padding: 22px 20px;
  align-self: start;
}

.page-faq .faq-prepare {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  counter-reset: faqprep;
}

.page-faq .faq-prepare li {
  position: relative;
  padding: 10px 0 10px 26px;
  border-top: 1px solid var(--line);
  color: var(--frost);
  font-size: 14.2px;
  line-height: 1.7;
}

.page-faq .faq-prepare li::before {
  counter-increment: faqprep;
  content: counter(faqprep);
  position: absolute;
  left: 0;
  top: 11px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
}

.page-faq .faq-support-note {
  margin: 16px 0 0;
  color: var(--silver);
  font-size: 13.2px;
  line-height: 1.85;
}

/* ---------- 高频速查 ---------- */
.page-faq .faq-quick-grid {
  display: grid;
  grid-template-columns: 1fr;
  border-top: 2px solid var(--line);
}

/* ---------- 终端排查 ---------- */
.page-faq .faq-term {
  scroll-margin-top: calc(var(--bar-h-min) + var(--index-h) + 24px);
}

.page-faq .faq-term-grid {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-steps--term {
  margin-top: 0;
}

.page-faq .faq-matrix-wrap {
  margin-top: 16px;
  border: 2px solid var(--line);
  overflow-x: auto;
}

.page-faq .faq-matrix {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 13.6px;
}

.page-faq .faq-matrix-caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  color: var(--mist);
  font-size: 12.5px;
  letter-spacing: 0.06em;
}

.page-faq .faq-matrix th,
.page-faq .faq-matrix td {
  text-align: left;
  padding: 11px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.page-faq .faq-matrix thead th {
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  border-bottom: 2px solid var(--line-strong);
  white-space: nowrap;
}

.page-faq .faq-matrix tbody th {
  color: var(--frost);
  font-weight: 600;
  white-space: nowrap;
}

.page-faq .faq-matrix tbody td {
  color: var(--silver);
}

.page-faq .faq-matrix tbody tr:last-child th,
.page-faq .faq-matrix tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 收束 ---------- */
.page-faq .faq-outro-inner {
  display: grid;
  gap: 20px;
  padding: clamp(20px, 3vw, 34px);
  border: 2px solid var(--line);
  background: var(--ink-2);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-outro-inner h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.6vw, 27px);
  color: var(--frost);
}

.page-faq .faq-outro-inner p {
  margin: 0;
  max-width: 56ch;
  color: var(--silver);
  font-size: 14.8px;
  line-height: 1.9;
}

.page-faq .faq-outro-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

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

@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 820px) {
  .page-faq .faq-quick-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: var(--faq-gap);
  }

  .page-faq .faq-outro-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.8fr);
    align-items: end;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-faq .faq-term-grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

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

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--bar-h-min) + var(--index-h) + 22px);
  }

  .page-faq .faq-rail-nav {
    display: block;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-rail-link {
    position: relative;
    display: flex;
    width: 100%;
    margin-bottom: 8px;
    padding: 11px 10px 11px 16px;
    border-color: transparent;
    background: transparent;
  }

  .page-faq .faq-rail-link::before {
    content: "";
    position: absolute;
    left: 0;
    top: 8px;
    bottom: 8px;
    width: 3px;
    background: var(--line);
    transition: background 0.3s var(--ease);
  }

  .page-faq .faq-rail-link:hover {
    background: var(--ink-2);
    color: var(--frost);
  }

  .page-faq .faq-rail-link:hover::before {
    background: var(--neon);
  }

  .page-faq .faq-rail-link.is-active {
    border-color: transparent;
    color: var(--cyan);
  }

  .page-faq .faq-rail-link.is-active::before {
    background: var(--cyan);
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-action-grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail-link,
  .page-faq .faq-q > summary,
  .page-faq .faq-rail-link::before {
    transition: none;
  }
}