.page-faq {
  --faq-bar: 6px;
  --faq-ease: cubic-bezier(.4, 0, .2, 1);
}

/* ---------- 面包屑 ---------- */
.page-faq .crumbs {
  padding-top: clamp(14px, 2vw, 24px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(18px, 2.6vw, 34px) 0 clamp(30px, 5vw, 64px);
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.page-faq .faq-hero-copy {
  position: relative;
  border: 2px solid var(--graphite);
  background:
    linear-gradient(160deg, rgba(20, 24, 26, .96), rgba(11, 13, 14, .72));
  padding: clamp(20px, 3vw, 44px);
}

.page-faq .faq-hero-copy::before,
.page-faq .faq-hero-copy::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--cinnabar);
}

.page-faq .faq-hero-copy::before {
  top: -2px;
  left: -2px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-hero-copy::after {
  right: -2px;
  bottom: -2px;
  border-top: 0;
  border-left: 0;
}

.page-faq .faq-h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5vw, 56px);
  line-height: 1.14;
  letter-spacing: -.01em;
  margin: 10px 0 18px;
  color: var(--paper);
}

.page-faq .faq-lead {
  max-width: 62ch;
  margin-bottom: 22px;
}

/* ---------- 首屏侧栏：原因分布 ---------- */
.page-faq .faq-hero-panel {
  padding: clamp(16px, 2vw, 24px);
}

.page-faq .faq-cause-list {
  list-style: none;
  margin: 14px 0 12px;
  padding: 0;
  border-top: 1px solid var(--graphite);
}

.page-faq .faq-cause {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 0 12px 14px;
  border-bottom: 1px solid var(--graphite);
  border-left: var(--faq-bar) solid var(--graphite);
}

.page-faq .faq-cause--net { border-left-color: var(--cinnabar); }
.page-faq .faq-cause--dns { border-left-color: var(--signal); }
.page-faq .faq-cause--cache { border-left-color: var(--amber); }
.page-faq .faq-cause--region { border-left-color: var(--paper); }

.page-faq .faq-cause-name {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--text);
}

.page-faq .faq-cause-num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--signal);
  font-variant-numeric: tabular-nums;
}

/* ---------- 三步自检带 ---------- */
.page-faq .faq-step-band {
  list-style: none;
  margin: clamp(20px, 3vw, 36px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 2px solid var(--graphite);
  border-left: 2px solid var(--graphite);
}

.page-faq .faq-step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: clamp(18px, 2.4vw, 30px);
  background: var(--ink-800);
  border-right: 2px solid var(--graphite);
  border-bottom: 2px solid var(--graphite);
  transition: border-color .2s var(--faq-ease), transform .2s var(--faq-ease);
}

.page-faq .faq-step:hover {
  border-color: var(--cinnabar);
  transform: translate(-1px, -1px);
}

.page-faq .faq-step-index {
  font-family: var(--font-mono);
  font-size: clamp(36px, 4.6vw, 58px);
  line-height: 1;
  color: var(--cinnabar);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-step-title {
  font-family: var(--font-display);
  font-size: clamp(18px, 1.5vw, 21px);
  font-weight: 800;
  margin: 0;
  color: var(--paper);
}

.page-faq .faq-step-verdict {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text);
  border-left: 2px solid var(--signal-dim);
  padding-left: 10px;
}

.page-faq .faq-step-action {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-check {
  margin-top: auto;
  padding-top: 12px;
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
}

.page-faq .faq-check input {
  width: 16px;
  height: 16px;
  accent-color: var(--signal);
  cursor: pointer;
}

.page-faq .faq-check:has(input:checked) {
  color: var(--signal);
}

.page-faq .faq-step-figure {
  margin: clamp(24px, 3.4vw, 44px) 0 0;
}

/* ---------- 分类条目 ---------- */
.page-faq .faq-filter {
  display: grid;
  gap: 8px;
  margin: clamp(18px, 2.6vw, 30px) 0 clamp(16px, 2.2vw, 24px);
}

.page-faq .faq-cats {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}

.page-faq .faq-cat {
  border: 2px solid var(--graphite);
  border-left-width: var(--faq-bar);
  background: var(--ink-800);
}

.page-faq .faq-cat--net { border-left-color: var(--cinnabar); }
.page-faq .faq-cat--dns { border-left-color: var(--signal); }
.page-faq .faq-cat--cache { border-left-color: var(--amber); }
.page-faq .faq-cat--region { border-left-color: var(--paper); }

.page-faq .faq-cat-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 14px clamp(14px, 2vw, 24px);
  border-bottom: 1px solid var(--graphite);
}

.page-faq .faq-cat-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.4vw, 19px);
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-cat-count {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.page-faq .faq-item {
  border-top: 1px solid var(--graphite);
}

.page-faq .faq-cat-body .faq-item:first-child {
  border-top: 0;
}

.page-faq .faq-summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px clamp(14px, 2vw, 24px);
  transition: background-color .2s var(--faq-ease);
}

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

.page-faq .faq-summary:hover {
  background: rgba(35, 42, 45, .45);
}

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

.page-faq .faq-summary-text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  font-weight: 600;
}

.page-faq .faq-summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 6px;
  border-right: 2px solid var(--cinnabar);
  border-bottom: 2px solid var(--cinnabar);
  transform: rotate(45deg);
  transition: transform .22s var(--faq-ease);
}

.page-faq .faq-item[open] > .faq-summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-item[open] > .faq-summary {
  background: rgba(35, 42, 45, .35);
}

.page-faq .faq-item[open] > .faq-summary .faq-summary-text {
  color: var(--paper);
}

.page-faq .faq-body {
  padding: 0 clamp(14px, 2vw, 24px) 18px;
  animation: faqFade .24s var(--faq-ease);
}

.page-faq .faq-body p {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  max-width: 74ch;
}

.page-faq .faq-meta {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  letter-spacing: .01em;
}

@keyframes faqFade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 显示相关 ---------- */
.page-faq .faq-display-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 44px);
  align-items: start;
}

.page-faq .faq-display-copy .section-title {
  margin-bottom: 14px;
}

.page-faq .faq-display-list {
  list-style: none;
  margin: 22px 0 20px;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--graphite);
}

.page-faq .faq-display-list li {
  padding: 16px 0 16px 16px;
  border-bottom: 1px solid var(--graphite);
  border-left: 2px solid var(--graphite);
  transition: border-left-color .2s var(--faq-ease);
}

.page-faq .faq-display-list li:hover {
  border-left-color: var(--cinnabar);
}

.page-faq .faq-display-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-display-list p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text);
  max-width: 66ch;
}

.page-faq .faq-display-panel {
  padding: clamp(16px, 2vw, 24px);
}

.page-faq .faq-check-list {
  list-style: none;
  margin: 14px 0 16px;
  padding: 0;
}

.page-faq .faq-check-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--graphite);
  font-size: 13.5px;
}

.page-faq .faq-check-key {
  font-family: var(--font-mono);
  color: var(--muted);
}

.page-faq .faq-check-val {
  font-family: var(--font-mono);
  color: var(--signal);
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.page-faq .faq-note {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-note--warn {
  color: var(--amber);
  border-left: 2px solid var(--amber);
  padding-left: 10px;
}

.page-faq .faq-note .link-more {
  font-size: 13px;
}

/* ---------- 反馈材料 ---------- */
.page-faq .faq-materials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-material-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: faqMat;
  border-top: 1px solid var(--graphite);
}

.page-faq .faq-material {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 18px 0;
  border-bottom: 1px solid var(--graphite);
}

.page-faq .faq-material-index {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1.1;
  color: var(--cinnabar);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-material-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-material p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
  max-width: 60ch;
}

.page-faq .faq-material-figure {
  margin: 0;
}

/* ---------- 仍未解决 ---------- */
.page-faq .faq-next-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(14px, 2vw, 20px);
  margin-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-next-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.2vw, 26px);
  text-decoration: none;
  background: var(--ink-800);
  border: 2px solid var(--graphite);
  transition: border-color .2s var(--faq-ease), transform .2s var(--faq-ease), box-shadow .2s var(--faq-ease);
}

.page-faq .faq-next-card:hover {
  border-color: var(--cinnabar);
  transform: translate(-1px, -1px);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-next-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--signal);
}

.page-faq .faq-next-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(17px, 1.5vw, 20px);
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-next-card p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-next-go {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cinnabar-soft);
  border-bottom: 1px solid var(--cinnabar);
  align-self: flex-start;
  padding-bottom: 2px;
}

/* ---------- 断点 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-step-band {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-next-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .page-faq .faq-next-card:first-child {
    grid-column: span 2;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.65fr) minmax(280px, .85fr);
  }

  .page-faq .faq-display-inner {
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, .9fr);
  }

  .page-faq .faq-materials-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(280px, .85fr);
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-next-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-next-card:first-child {
    grid-column: span 1;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-cat-head,
  .page-faq .faq-summary,
  .page-faq .faq-body {
    padding-left: 12px;
    padding-right: 12px;
  }

  .page-faq .faq-material {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-faq .faq-cause-num {
    font-size: 19px;
  }
}
<<<END>>>