.page-faq {
  --faq-ink-line: rgba(11, 26, 21, 0.14);
  --faq-ink-line-soft: rgba(11, 26, 21, 0.09);
  --faq-edge: rgba(255, 255, 255, 0.14);
  --faq-num-size: clamp(38px, 6.5vw, 88px);
  background: var(--ink);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 面包屑与页头 ---------- */

.page-faq .faq-breadcrumb {
  padding-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-breadcrumb .breadcrumb__link {
  color: var(--mist);
}

.page-faq .faq-breadcrumb .breadcrumb__link:hover {
  color: var(--cyan);
}

.page-faq .faq-breadcrumb .breadcrumb__item[aria-current="page"] {
  color: var(--paper);
}

.page-faq .faq-head {
  padding: clamp(20px, 3vw, 40px) 0 clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--faq-edge);
}

.page-faq .faq-head__kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-head__title {
  margin: 0 0 22px;
  max-width: 20ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(34px, 5.6vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.01em;
}

.page-faq .faq-head__lede {
  margin: 0 0 28px;
  max-width: 62ch;
  font-size: clamp(16px, 1.35vw, 18px);
  line-height: 1.85;
  color: rgba(242, 235, 221, 0.86);
}

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

.page-faq .faq-head__meta li {
  padding: 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  border-left: 2px solid rgba(53, 242, 214, 0.4);
}

.page-faq .faq-head__meta li:first-child {
  padding-left: 0;
  border-left: 0;
}

/* ---------- 首屏配图 ---------- */

.page-faq .faq-figure {
  margin: clamp(28px, 4vw, 56px) 0 clamp(36px, 5vw, 72px);
}

.page-faq .faq-figure__frame {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  border: 1px solid var(--faq-edge);
  background: var(--pine);
}

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

.page-faq .faq-figure .media__caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--mist);
}

/* ---------- 暖纸白纸面 ---------- */

.page-faq .faq-paper {
  background: var(--paper);
  color: var(--ink);
  padding: clamp(40px, 6vw, 88px) 0 clamp(56px, 7vw, 104px);
}

.page-faq .faq-paper__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

/* ---------- 问答主体 ---------- */

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

.page-faq .faq-chapter {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 0 16px;
  padding: clamp(32px, 4.5vw, 56px) 0;
  border-top: 1px solid var(--faq-ink-line);
}

.page-faq .faq-body > .faq-chapter:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-chapter__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: var(--faq-num-size);
  line-height: 0.86;
  letter-spacing: -0.04em;
  color: var(--ash);
  opacity: 0.55;
}

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

.page-faq .faq-chapter__title {
  margin: 0 0 12px;
  max-width: 24ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-chapter__note {
  margin: 0 0 26px;
  padding-left: 14px;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(11, 26, 21, 0.68);
  border-left: 3px solid var(--amber);
}

.page-faq .faq-chapter__tail {
  margin: 26px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(11, 26, 21, 0.7);
}

.page-faq .faq-link {
  color: var(--ash);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 1px;
  transition: color var(--step), border-color var(--step);
}

.page-faq .faq-link:hover {
  color: var(--ember);
}

.page-faq .faq-link--bright {
  color: var(--amber);
}

.page-faq .faq-link--bright:hover {
  color: var(--cyan);
}

/* ---------- 三步流程 ---------- */

.page-faq .faq-steps__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
}

.page-faq .faq-step__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 16px;
  height: 100%;
  padding: 20px 18px;
  text-decoration: none;
  color: var(--ink);
  background: rgba(255, 255, 255, 0.5);
  border: 1px solid var(--faq-ink-line);
  transition: background var(--step), color var(--step), border-color var(--step);
}

.page-faq .faq-step__link:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.page-faq .faq-step__num {
  grid-row: span 3;
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--ember);
}

.page-faq .faq-step__link:hover .faq-step__num {
  color: var(--amber);
}

.page-faq .faq-step__title {
  display: block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  line-height: 1.3;
}

.page-faq .faq-step__desc {
  display: block;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(11, 26, 21, 0.7);
}

.page-faq .faq-step__link:hover .faq-step__desc {
  color: rgba(242, 235, 221, 0.8);
}

.page-faq .faq-step__go {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ash);
  border-bottom: 1px solid currentColor;
  justify-self: start;
}

.page-faq .faq-step__link:hover .faq-step__go {
  color: var(--cyan);
}

.page-faq .faq-step + .faq-step::before {
  content: "";
  position: absolute;
  top: -14px;
  left: 22px;
  width: 1px;
  height: 14px;
  background: var(--faq-ink-line);
}

/* ---------- 问答条目 ---------- */

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

.page-faq .faq-q:first-of-type {
  border-top: 1px solid var(--faq-ink-line);
}

.page-faq .faq-q__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-q__summary::marker {
  content: "";
}

.page-faq .faq-q__tag {
  flex: 0 0 auto;
  margin-top: 3px;
  padding: 3px 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--ash);
  border: 2px solid var(--amber);
  background: rgba(255, 194, 46, 0.14);
}

.page-faq .faq-q__title {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-q__mark {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--paper);
  background: var(--ink);
  transition: background var(--step), color var(--step);
}

.page-faq .faq-q__mark::before {
  content: "+";
}

.page-faq .faq-q[open] .faq-q__mark::before {
  content: "−";
}

.page-faq .faq-q[open] .faq-q__mark {
  background: var(--ember);
}

.page-faq .faq-q__summary:hover .faq-q__mark {
  background: var(--ash);
}

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

.page-faq .faq-q__body {
  padding: 0 0 22px;
}

.page-faq .faq-q__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: rgba(11, 26, 21, 0.8);
}

/* ---------- 通知章节配图 ---------- */

.page-faq .faq-notify-figure {
  margin: 0 0 28px;
}

.page-faq .faq-notify-figure .media__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--faq-ink-line);
  background: var(--pine);
}

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

.page-faq .faq-notify-figure .media__caption {
  margin-top: 10px;
  font-size: 13px;
  color: rgba(11, 26, 21, 0.6);
}

/* ---------- 深色排障板 ---------- */

.page-faq .faq-chapter--dark {
  background: var(--ink);
  color: var(--paper);
  border-top: 0;
  padding: clamp(28px, 4vw, 48px) clamp(18px, 3vw, 40px);
  margin-block: clamp(16px, 3vw, 32px);
}

.page-faq .faq-chapter--dark .faq-chapter__num {
  color: var(--cyan);
  opacity: 0.9;
}

.page-faq .faq-chapter--dark .faq-chapter__title {
  color: var(--paper);
}

.page-faq .faq-chapter--dark .faq-chapter__note {
  color: rgba(242, 235, 221, 0.72);
}

.page-faq .faq-check {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-edge);
}

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

.page-faq .faq-check__box {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-check__label {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
}

.page-faq .faq-check__mark {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  display: grid;
  place-items: center;
  border: 1px solid var(--faq-edge);
  color: transparent;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1;
  transition: background var(--step), border-color var(--step), color var(--step);
}

.page-faq .faq-check__mark::before {
  content: "✓";
}

.page-faq .faq-check__box:checked + .faq-check__label .faq-check__mark {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .faq-check__box:focus-visible + .faq-check__label .faq-check__mark {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-check__box:checked + .faq-check__label .faq-check__text {
  color: var(--mist);
  text-decoration: line-through;
  text-decoration-color: rgba(143, 163, 156, 0.6);
}

.page-faq .faq-check__text {
  font-size: 15px;
  line-height: 1.8;
  color: rgba(242, 235, 221, 0.92);
}

/* ---------- 联系通道 ---------- */

.page-faq .faq-chapter--ask {
  border-top: 0;
  background: var(--pine);
  color: var(--paper);
  padding: clamp(28px, 4vw, 48px) clamp(18px, 3vw, 40px);
}

.page-faq .faq-chapter--ask .faq-chapter__num {
  color: var(--amber);
  opacity: 0.9;
}

.page-faq .faq-chapter--ask .faq-chapter__title {
  color: var(--paper);
}

.page-faq .faq-chapter--ask .faq-chapter__note {
  color: rgba(242, 235, 221, 0.72);
}

.page-faq .faq-ask__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .faq-ask__card {
  padding: 20px 18px;
  border: 1px solid var(--faq-edge);
  background: rgba(255, 255, 255, 0.02);
}

.page-faq .faq-ask__label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-ask__value {
  margin: 0 0 12px;
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
  word-break: break-all;
}

.page-faq .faq-ask__desc {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(242, 235, 221, 0.78);
}

.page-faq .faq-copy {
  border: 1px solid var(--faq-edge);
  color: var(--paper);
  background: transparent;
}

.page-faq .faq-copy:hover {
  background: var(--paper);
  color: var(--ink);
  border-color: var(--paper);
}

.page-faq .faq-copy__status {
  display: block;
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-chapter__tail--dark {
  color: rgba(242, 235, 221, 0.7);
}

/* ---------- 章节索引 ---------- */

.page-faq .faq-index {
  order: -1;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--faq-ink-line);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 18px;
  margin: 0;
  padding: 0 0 12px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 4px 0;
  font-size: 14px;
  text-decoration: none;
  color: rgba(11, 26, 21, 0.62);
  border-bottom: 1px solid transparent;
  transition: color var(--step), border-color var(--step);
  white-space: nowrap;
}

.page-faq .faq-index__num {
  font-size: 12px;
  color: rgba(11, 26, 21, 0.4);
}

.page-faq .faq-index__link:hover {
  color: var(--ink);
  border-bottom-color: var(--ink);
}

.page-faq .faq-index__link[data-active="true"] {
  color: var(--ash);
  border-bottom-color: var(--ember);
}

.page-faq .faq-index__link[data-active="true"] .faq-index__num {
  color: var(--ember);
}

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

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-chapter {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 0 24px;
  }

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

  .page-faq .faq-ask__card--wide {
    grid-column: 1 / -1;
  }

  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-step + .faq-step::before {
    top: 26px;
    left: -18px;
    width: 18px;
    height: 1px;
  }

  .page-faq .faq-step + .faq-step::after {
    content: "";
    position: absolute;
    top: 22px;
    left: -6px;
    width: 7px;
    height: 7px;
    border-top: 1px solid var(--faq-ink-line);
    border-right: 1px solid var(--faq-ink-line);
    transform: rotate(45deg);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-chapter {
    grid-template-columns: 104px minmax(0, 1fr);
    gap: 0 32px;
  }

  .page-faq .faq-chapter:nth-child(even) {
    padding-left: clamp(0px, 3vw, 44px);
  }

  .page-faq .faq-chapter:nth-child(odd) {
    padding-right: clamp(0px, 3vw, 44px);
  }

  .page-faq .faq-notify-figure {
    margin-bottom: 32px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-paper__inner {
    grid-template-columns: minmax(0, 1fr) 196px;
    gap: clamp(36px, 4vw, 72px);
  }

  .page-faq .faq-index {
    order: 0;
    position: sticky;
    top: 88px;
    align-self: start;
    padding-bottom: 0;
    border-bottom: 0;
    border-left: 1px solid var(--faq-ink-line);
    padding-left: 20px;
  }

  .page-faq .faq-index__list {
    display: block;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__item + .faq-index__item {
    margin-top: 4px;
  }

  .page-faq .faq-index__link {
    display: flex;
    gap: 10px;
    white-space: normal;
    border-bottom: 0;
    border-left: 2px solid transparent;
    margin-left: -22px;
    padding-left: 20px;
  }

  .page-faq .faq-index__link:hover {
    border-bottom: 0;
    border-left-color: rgba(11, 26, 21, 0.3);
  }

  .page-faq .faq-index__link[data-active="true"] {
    border-bottom: 0;
    border-left-color: var(--ember);
    color: var(--ink);
  }

  .page-faq .faq-ask__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
<<<END>>>