.page-faq {
  --faq-paper: #ede0c8;
  --faq-ink: #181b22;
  background-color: #0e1116;
  color: #e5e9f0;
  font-family: var(--font-body);
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq .container {
  width: min(100% - 32px, 1280px);
  margin-inline: auto;
}

.page-faq img {
  max-width: 100%;
  height: auto;
}

/* ===== 首屏 hero ===== */
.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-offset) + 24px) 0 44px;
  background:
    linear-gradient(120deg, rgba(230, 57, 70, 0.16) 0%, transparent 32%),
    radial-gradient(ellipse at 80% 20%, rgba(0, 180, 216, 0.14), transparent 46%),
    #0e1116;
  border-bottom: 1px solid var(--color-line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 320px;
  height: 320px;
  border: 1px solid rgba(0, 180, 216, 0.2);
  border-radius: 32px;
  transform: rotate(24deg);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
}

.page-faq .breadcrumb {
  margin-bottom: 16px;
  font-size: 0.8rem;
}

.page-faq .breadcrumb a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .breadcrumb a:hover {
  color: var(--color-blue);
}

.page-faq .breadcrumb-sep {
  color: var(--color-line);
  margin: 0 8px;
}

.page-faq .faq-hero-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--color-blue);
  text-transform: uppercase;
  margin: 0 0 10px;
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 6vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text);
  margin: 0 0 16px;
}

.page-faq .faq-hero-desc {
  max-width: 640px;
  color: var(--color-text-muted);
  font-size: 1rem;
  margin: 0 0 24px;
}

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

.page-faq .faq-hero-actions .btn {
  text-decoration: none;
}

.page-faq .faq-hero-aside {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

.page-faq .faq-decoder {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  line-height: 2.1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-line);
  border-radius: 12px;
  padding: 18px 20px;
  min-width: 250px;
  color: var(--color-text);
}

.page-faq .faq-decoder-line {
  display: block;
  color: var(--color-text-muted);
}

.page-faq .faq-decoder-line::before {
  content: "> ";
  color: var(--color-red);
}

.page-faq .faq-decoder-cursor {
  display: inline-block;
  width: 8px;
  height: 16px;
  background: var(--color-blue);
  animation: faq-blink 1s steps(1) infinite;
  vertical-align: middle;
  margin-left: 4px;
}

.page-faq .faq-hero-stat {
  display: flex;
  align-items: center;
  gap: 12px;
  background: var(--faq-paper);
  color: var(--faq-ink);
  padding: 16px 20px;
  border-radius: 14px;
  box-shadow: 0 8px 24px var(--color-shadow);
}

.page-faq .faq-hero-stat-num {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 3rem;
  line-height: 1;
  color: var(--color-red);
}

.page-faq .faq-hero-stat-label {
  font-size: 0.75rem;
  line-height: 1.3;
  color: #4a4f5a;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ===== 移动端登录异常排查 ===== */
.page-faq .faq-login {
  position: relative;
  padding: 56px 0 64px;
  background: #0a0d11;
}

.page-faq .faq-login::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(rgba(230, 57, 70, 0.06), transparent 40%),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.02) 0 1px, transparent 1px 80px);
  pointer-events: none;
}

.page-faq .faq-login .container {
  position: relative;
  z-index: 1;
}

.page-faq .faq-login-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  align-items: start;
}

.page-faq .section-head {
  margin-bottom: 28px;
}

.page-faq .section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--color-blue);
  text-transform: uppercase;
}

.page-faq .section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 6px 0 10px;
  color: var(--color-text);
}

.page-faq .section-desc {
  color: var(--color-text-muted);
  max-width: 720px;
}

.page-faq .faq-login-list {
  display: grid;
  gap: 20px;
}

.page-faq .issue-card {
  position: relative;
  background: var(--faq-paper);
  color: var(--faq-ink);
  border-radius: 16px;
  padding: 24px 24px 22px;
  box-shadow: 0 10px 28px var(--color-shadow);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
}

.page-faq .issue-card::after {
  content: "";
  position: absolute;
  right: 0;
  top: 24px;
  width: 4px;
  height: 44px;
  background: var(--color-red);
  border-radius: 2px 0 0 2px;
}

.page-faq .issue-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.page-faq .issue-no {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  color: var(--color-red);
  letter-spacing: 0.04em;
}

.page-faq .issue-meta {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.page-faq .issue-card .tag {
  font-size: 0.68rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 999px;
  letter-spacing: 0.04em;
}

.page-faq .issue-card .tag-amber {
  background: rgba(244, 162, 97, 0.22);
  color: #7a4a1d;
  border: 1px solid rgba(244, 162, 97, 0.5);
}

.page-faq .issue-card .tag-blue {
  background: rgba(0, 180, 216, 0.14);
  color: #0f7a94;
  border: 1px solid rgba(0, 180, 216, 0.4);
}

.page-faq .issue-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 8px;
  color: var(--faq-ink);
}

.page-faq .issue-symptom {
  font-size: 0.9rem;
  background: rgba(0, 0, 0, 0.05);
  border-left: 3px solid var(--color-blue);
  padding: 8px 12px;
  border-radius: 0 8px 8px 0;
  margin: 0 0 14px;
}

.page-faq .issue-steps {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 6px;
}

.page-faq .issue-steps li {
  font-size: 0.875rem;
}

.page-faq .issue-steps li::marker {
  color: var(--color-red);
  font-weight: 700;
}

.page-faq .faq-login-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.page-faq .issue-visual {
  width: 100%;
  max-width: 280px;
  margin-inline: auto;
  background: linear-gradient(160deg, #1a212c, #0a0d11);
  padding: 10px;
  border-radius: 22px;
  border: 1px solid var(--color-line);
}

.page-faq .issue-visual-img {
  display: block;
  width: 100%;
  border-radius: 14px;
}

.page-faq .issue-visual-caption {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0;
}

/* ===== 更多常见问题 + 筛选 ===== */
.page-faq .faq-more {
  position: relative;
  padding: 56px 0 64px;
  background: linear-gradient(180deg, #0e1116, #10141a 60%, #0a0d11);
}

.page-faq .faq-more-head {
  margin-bottom: 20px;
}

.page-faq .faq-filter-zone {
  position: relative;
}

.page-faq .faq-filter-radio {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.page-faq .faq-filter-label {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 999px;
  border: 1px solid var(--color-line);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  background: rgba(255, 255, 255, 0.02);
  user-select: none;
}

.page-faq .faq-filter-label:hover {
  border-color: var(--color-blue);
  color: var(--color-text);
}

.page-faq #faq-filter-all:checked ~ .faq-filter-bar label[for="faq-filter-all"],
.page-faq #faq-filter-install:checked ~ .faq-filter-bar label[for="faq-filter-install"],
.page-faq #faq-filter-net:checked ~ .faq-filter-bar label[for="faq-filter-net"] {
  background: var(--color-red);
  border-color: var(--color-red);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(230, 57, 70, 0.25);
}

.page-faq #faq-filter-install:checked ~ .faq-net-block {
  display: none;
}

.page-faq #faq-filter-net:checked ~ .faq-install-block {
  display: none;
}

.page-faq .faq-cat-block {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid var(--color-line);
}

.page-faq .faq-cat-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-cat-head h3 {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0;
  color: var(--faq-paper);
}

.page-faq .faq-cat-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin: 4px 0 0;
}

.page-faq .faq-cat-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-blue);
  border: 1px solid rgba(0, 180, 216, 0.35);
  padding: 4px 10px;
  border-radius: 8px;
  white-space: nowrap;
}

.page-faq .faq-accordion {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  background: #141920;
  border: 1px solid var(--color-line);
  border-radius: 14px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(0, 180, 216, 0.45);
}

.page-faq .faq-item summary {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.5;
}

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

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: rgba(0, 180, 216, 0.12);
  color: var(--color-blue);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  transition: background 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  background: var(--color-red);
  color: #ffffff;
}

.page-faq .faq-answer {
  padding: 0 18px 18px;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-link {
  display: inline-block;
  color: var(--color-blue);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.85rem;
  border-bottom: 1px dashed rgba(0, 180, 216, 0.5);
  transition: color 0.2s ease;
}

.page-faq .faq-link:hover {
  color: #66d9ef;
}

.page-faq .net-visual {
  margin: 28px 0 0;
  padding: 0;
  background: #0a0d11;
  border: 1px solid var(--color-line);
  border-radius: 16px;
  overflow: hidden;
}

.page-faq .net-visual-img {
  display: block;
  width: 100%;
}

.page-faq .net-visual figcaption {
  padding: 12px 16px;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-line);
}

/* ===== 联系支持 ===== */
.page-faq .faq-contact {
  padding: 56px 0 64px;
  background:
    radial-gradient(ellipse at 15% 80%, rgba(230, 57, 70, 0.1), transparent 42%),
    #0e1116;
}

.page-faq .faq-contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 36px;
  max-width: 980px;
}

.page-faq .faq-contact-copy p {
  color: var(--color-text-muted);
  max-width: 640px;
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  background: #141920;
  border: 1px solid var(--color-line);
  border-radius: 12px;
  padding: 12px 16px;
}

.page-faq .faq-contact-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--color-blue);
  text-transform: uppercase;
  min-width: 70px;
}

.page-faq .faq-contact-value {
  color: var(--color-text);
  font-weight: 600;
  word-break: break-all;
}

.page-faq .faq-contact-note {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-top: 8px;
}

.page-faq .faq-contact-visual {
  display: none;
}

.page-faq .faq-contact-svg {
  width: 100%;
  max-width: 480px;
  height: auto;
}

@keyframes faq-blink {
  50% {
    opacity: 0;
  }
}

/* ===== 桌面端断点 ===== */
@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-offset) + 32px) 0 56px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: 1.3fr 0.9fr;
    align-items: center;
    gap: 48px;
  }

  .page-faq .faq-hero-aside {
    justify-content: flex-end;
  }

  .page-faq .faq-login {
    padding: 72px 0 84px;
  }

  .page-faq .faq-login-split {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 40px;
  }

  .page-faq .faq-login-visual {
    position: sticky;
    top: 84px;
  }

  .page-faq .issue-visual {
    max-width: 300px;
  }

  .page-faq .faq-more {
    padding: 72px 0 84px;
  }

  .page-faq .faq-contact {
    padding: 72px 0 84px;
  }

  .page-faq .faq-contact-grid {
    grid-template-columns: 1fr 0.9fr;
    align-items: center;
  }

  .page-faq .faq-contact-visual {
    display: flex;
    justify-content: flex-end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-login-split {
    grid-template-columns: minmax(0, 1fr) 360px;
    gap: 56px;
  }

  .page-faq .issue-visual {
    max-width: 320px;
  }
}