.page-faq {
  --faq-cut: 20px;
  --faq-hair: rgba(36, 56, 75, 0.85);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 56px;
  background-color: var(--ink-800);
  background-image:
    linear-gradient(180deg, rgba(7, 13, 20, 0) 38%, rgba(7, 13, 20, 0.9) 100%),
    repeating-linear-gradient(90deg, rgba(36, 56, 75, 0.45) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(0deg, rgba(36, 56, 75, 0.45) 0 1px, transparent 1px 24px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 24px;
  margin-top: 32px;
}

.page-faq .faq-hero__index {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-left: 16px;
  border-left: 2px solid var(--brass);
}

.page-faq .faq-hero__index .index-figure {
  font-family: var(--font-mono);
  font-size: clamp(64px, 15vw, 120px);
  font-weight: 400;
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--brass);
}

.page-faq .faq-hero__index-label {
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  color: var(--slate);
  text-transform: uppercase;
}

.page-faq .faq-hero__body h1 {
  margin: 12px 0 18px;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.2vw, 44px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--text-1);
}

.page-faq .faq-hero__body .t-lead {
  max-width: 60ch;
  color: var(--text-2);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

/* ---------- 三分钟上手 ---------- */

.page-faq .faq-start {
  background: var(--paper);
  border-top: 1px solid var(--brass);
  border-bottom: 1px solid var(--brass);
}

.page-faq .faq-start .section-head__title {
  color: var(--ink-800);
}

.page-faq .faq-start .section-head__meta {
  color: var(--brass-ink);
}

.page-faq .faq-steps {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 28px 22px 26px;
  background: var(--ink-700);
  color: var(--text-2);
  clip-path: polygon(var(--faq-cut) 0, 100% 0, 100% 100%, 0 100%, 0 var(--faq-cut));
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 60px;
  height: 60px;
  background: repeating-linear-gradient(
    135deg,
    rgba(224, 188, 130, 0.4) 0 1px,
    transparent 1px 7px
  );
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.page-faq .faq-step__num {
  display: block;
  font-size: var(--step-5);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--brass);
}

.page-faq .faq-step__title {
  margin: 14px 0 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.25;
  color: var(--text-1);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--text-2);
}

/* ---------- 操作说明标签页 ---------- */

.page-faq .faq-tablist {
  display: flex;
  gap: 6px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tablist::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-tab {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: transparent;
  border: 1px solid transparent;
  border-bottom: 1px solid transparent;
  color: var(--text-2);
  font-family: var(--font-body);
  font-size: var(--step-3);
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  transition: color 180ms ease, background-color 180ms ease, border-color 180ms ease;
}

.page-faq .faq-tab:hover {
  color: var(--text-1);
  border-color: var(--line);
}

.page-faq .faq-tab[aria-selected="true"] {
  color: var(--paper);
  background: var(--ink-700);
  border-color: var(--brass);
}

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

.page-faq .faq-tab__num {
  font-size: var(--step-1);
  letter-spacing: 0.1em;
  color: var(--brass);
}

.page-faq .faq-tab[aria-selected="true"] .faq-tab__num {
  color: var(--brass-soft);
}

.page-faq .faq-tabhint {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  letter-spacing: 0.02em;
  color: var(--slate);
}

.page-faq .faq-kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 22px;
  padding: 0 5px;
  margin-right: 2px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--brass-soft);
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
}

.page-faq .faq-panel {
  padding-top: 32px;
}

.page-faq .faq-panel[hidden] {
  display: none;
}

.page-faq .faq-panel:not([hidden]) {
  animation: faq-panel-in 240ms ease-out both;
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-panel__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: var(--step-5);
  line-height: 1.15;
  color: var(--text-1);
}

.page-faq .faq-panel__lead {
  max-width: 62ch;
  margin: 0 0 28px;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--text-2);
}

.page-faq .faq-subhead {
  margin: 36px 0 14px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-4);
  color: var(--brass-soft);
}

/* 双栏对照 */

.page-faq .faq-split {
  display: grid;
  gap: 18px;
}

.page-faq .faq-split__col {
  padding: 24px 22px;
  background: var(--ink-700);
  border-left: 2px solid var(--brass);
}

.page-faq .faq-split__col h4 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.3;
  color: var(--paper);
}

.page-faq .faq-split__col ul {
  margin: 0;
  padding-left: 1.1em;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--text-2);
}

.page-faq .faq-split__col li + li {
  margin-top: 8px;
}

.page-faq .faq-split__col li::marker {
  color: var(--brass);
}

/* 图片 */

.page-faq .faq-figure {
  margin: 32px 0 0;
  padding: 12px;
  background: var(--ink-700);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  background: var(--ink-800);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  padding-left: 2px;
  font-size: var(--step-2);
  line-height: 1.6;
  color: var(--slate);
}

/* 筛选清单 */

.page-faq .faq-filter-list,
.page-faq .faq-export-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-filter-list li,
.page-faq .faq-export-list li {
  display: grid;
  gap: 6px;
  padding: 16px 18px;
  background: var(--ink-700);
  border-left: 2px solid var(--line);
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--text-2);
}

.page-faq .faq-filter-list__key,
.page-faq .faq-export-list__key {
  font-size: var(--step-1);
  letter-spacing: 0.14em;
  color: var(--brass-soft);
  border-bottom: 1px solid rgba(185, 136, 63, 0.5);
  justify-self: start;
}

/* 路径编号 */

.page-faq .faq-paths {
  display: grid;
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-path;
}

.page-faq .faq-paths li {
  position: relative;
  padding-left: 46px;
  font-size: var(--step-3);
  line-height: 1.78;
  color: var(--text-2);
}

.page-faq .faq-paths li::before {
  counter-increment: faq-path;
  content: counter(faq-path, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: var(--step-3);
  letter-spacing: 0.05em;
  color: var(--brass);
}

.page-faq .faq-paths strong {
  color: var(--text-1);
  font-weight: 600;
}

/* 状态标识 */

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

.page-faq .faq-states li {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  align-items: baseline;
  font-size: var(--step-3);
  line-height: 1.7;
  color: var(--text-2);
}

.page-faq .faq-state {
  display: inline-block;
  justify-self: start;
  padding: 4px 8px;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: 0.1em;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text-1);
}

.page-faq .faq-state--keep {
  border-color: var(--celadon);
  color: var(--celadon);
}

.page-faq .faq-state--edit {
  border-color: var(--brass);
  color: var(--brass-soft);
}

.page-faq .faq-state--arch {
  border-color: var(--slate);
  color: var(--slate);
}

/* 提示条 */

.page-faq .faq-note {
  margin-top: 26px;
  padding: 18px 20px 18px 24px;
  font-size: var(--step-3);
  line-height: 1.72;
  color: var(--text-1);
  background: rgba(18, 41, 61, 0.9);
  border-left: 3px solid var(--brass);
}

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

.page-faq .faq-note--celadon {
  border-left-color: var(--celadon);
}

.page-faq .faq-note--amber {
  border-left-color: var(--amber);
}

/* 阅读设置 */

.page-faq .faq-settings {
  display: grid;
  gap: 16px;
}

.page-faq .faq-setting {
  position: relative;
  padding: 22px 20px 22px 24px;
  background: var(--ink-700);
  border-top: 3px solid var(--line);
}

.page-faq .faq-setting h4 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.3;
  color: var(--text-1);
}

.page-faq .faq-setting p {
  margin: 0;
  font-size: var(--step-3);
  line-height: 1.75;
  color: var(--text-2);
}

/* ---------- 高频问题 ---------- */

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

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  position: relative;
  padding: 20px 44px 20px 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--step-4);
  line-height: 1.45;
  color: var(--text-1);
  cursor: pointer;
  list-style: none;
  transition: color 180ms ease;
}

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

.page-faq .faq-item__q:hover {
  color: var(--brass-soft);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 18px;
  font-family: var(--font-mono);
  font-size: var(--step-4);
  line-height: 1;
  color: var(--brass);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--celadon);
}

.page-faq .faq-item__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 12px;
  border-radius: 50%;
  background: var(--slate);
  transition: background-color 180ms ease, box-shadow 180ms ease;
}

.page-faq .faq-item[open] .faq-item__dot {
  background: var(--celadon);
  box-shadow: 0 0 0 4px rgba(47, 169, 140, 0.18);
}

.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 44px 24px 22px;
  font-size: var(--step-3);
  line-height: 1.78;
  color: var(--text-2);
}

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

.page-faq .faq-item__a a {
  color: var(--brass-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-item__a a:hover {
  color: var(--paper);
}

/* ---------- 响应式 ---------- */

@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: 36px 0 80px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 180px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    margin-top: 48px;
  }

  .page-faq .faq-hero__body {
    padding-top: 8px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
  }

  .page-faq .faq-filter-list li,
  .page-faq .faq-export-list li {
    grid-template-columns: 84px minmax(0, 1fr);
    gap: 18px;
    align-items: baseline;
  }

  .page-faq .faq-states li {
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 18px;
  }

  .page-faq .faq-settings {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-item__q {
    padding: 24px 56px 24px 0;
  }

  .page-faq .faq-item__a {
    padding: 0 56px 28px 22px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 72px;
  }

  .page-faq .faq-tab {
    padding: 14px 22px;
  }

  .page-faq .faq-panel {
    padding-top: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-panel:not([hidden]) {
    animation: none;
  }

  .page-faq .faq-tab,
  .page-faq .faq-item__q,
  .page-faq .faq-item__dot {
    transition: none;
  }
}
<<<END>>>