.page-faq {
  --faq-rail: 76px;
  --faq-line: var(--line);
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-main {
  width: 100%;
  max-width: 760px;
  margin: 0 auto;
  padding: 20px 18px 72px;
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding: 18px 0 34px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-500);
}

.page-faq .kicker--light {
  color: var(--brass-300);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
  font-size: clamp(1.85rem, 6.2vw, 3.15rem);
  color: var(--ink-950);
}

.page-faq .lede {
  margin: 16px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-700);
  max-width: 46ch;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 18px;
  border-radius: var(--r-pill);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  transition: transform 0.22s var(--ease), background-color 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .btn--solid {
  background: var(--ink-950);
  color: var(--paper-50);
}

.page-faq .btn--ghost {
  background: transparent;
  color: var(--ink-950);
  border-color: rgba(43, 59, 82, 0.28);
}

.page-faq .btn:hover,
.page-faq .btn:focus-visible {
  transform: translateY(-1px);
}

.page-faq .btn--solid:hover,
.page-faq .btn--solid:focus-visible {
  background: var(--ink-900);
}

.page-faq .btn--ghost:hover,
.page-faq .btn--ghost:focus-visible {
  border-color: var(--brass-500);
  color: var(--brass-500);
}

.page-faq .btn__arrow {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
}

.page-faq .faq-hero__media {
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--ink-900);
  border: 1px solid rgba(215, 222, 232, 0.16);
}

.page-faq .faq-hero__media::before {
  content: "";
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(215, 222, 232, 0.2);
  border-radius: calc(var(--r-lg) - 8px);
  pointer-events: none;
  z-index: 1;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-hero__cap {
  position: absolute;
  left: 20px;
  bottom: 16px;
  z-index: 2;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--brass-300);
}

/* ---------- 通用章节 ---------- */
.page-faq .section {
  padding: 44px 0 0;
}

.page-faq .section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 14px;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .section__num {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--brass-500);
  padding-top: 6px;
}

.page-faq .section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(1.3rem, 3.6vw, 1.75rem);
  color: var(--ink-950);
}

.page-faq .section__lede {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate-500);
  max-width: 52ch;
}

.page-faq .note {
  margin: 16px 0 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--slate-500);
}

.page-faq .note a {
  color: var(--brass-500);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filterbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 14px 0;
  margin-bottom: 10px;
  background: var(--mist-200);
  border-radius: var(--r-md) var(--r-md) 0 0;
}

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

.page-faq .chip {
  font: inherit;
  font-size: 13px;
  line-height: 1;
  padding: 9px 14px;
  border-radius: var(--r-pill);
  border: 1px solid rgba(43, 59, 82, 0.2);
  background: rgba(244, 246, 249, 0.7);
  color: var(--slate-700);
  cursor: pointer;
  transition: background-color 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .chip[aria-pressed="true"] {
  background: var(--ink-950);
  border-color: var(--ink-950);
  color: var(--paper-50);
}

.page-faq .chip:hover,
.page-faq .chip:focus-visible {
  border-color: var(--brass-500);
}

.page-faq .filter-count {
  margin: 0;
  font-size: 12px;
  color: var(--slate-700);
  white-space: nowrap;
}

.page-faq .filter-count .mono {
  color: var(--brass-500);
  font-size: 14px;
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-acc {
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .faq-item__sum {
  list-style: none;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 17px 4px;
  cursor: pointer;
}

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

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--brass-500);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-950);
}

.page-faq .faq-item__mark {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  align-self: center;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--slate-500);
  transition: transform 0.24s var(--ease), background-color 0.24s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
}

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--signal-500);
}

.page-faq .faq-item[open] .faq-item__q {
  color: var(--brass-500);
}

.page-faq .faq-item__body {
  padding: 0 4px 20px 40px;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate-700);
}

/* ---------- 费用周期表 ---------- */
.page-faq .faq-cost__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-faq .cost-head {
  display: none;
}

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

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

.page-faq .cost-row__sum {
  list-style: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 4px 12px;
  align-items: center;
  padding: 15px 4px;
  cursor: pointer;
}

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

.page-faq .cost-row__tier {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-950);
}

.page-faq .cost-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--brass-500);
  flex: 0 0 auto;
}

.page-faq .cost-dot--signal {
  background: var(--signal-500);
}

.page-faq .cost-row__days {
  font-size: 13px;
  color: var(--ink-950);
  background: rgba(183, 121, 60, 0.1);
  border-radius: var(--r-pill);
  padding: 5px 11px;
  white-space: nowrap;
}

.page-faq .cost-row__fee {
  grid-column: 1 / -1;
  font-size: 12px;
  color: var(--slate-500);
}

.page-faq .cost-row__body {
  padding: 0 4px 18px;
}

.page-faq .cost-row__body p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate-700);
}

.page-faq .faq-cost__media {
  margin: 0;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid rgba(43, 59, 82, 0.14);
  background: var(--mist-200);
}

.page-faq .faq-cost__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 6;
  object-fit: cover;
}

/* ---------- 注册步骤 ---------- */
.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .step-card {
  position: relative;
  padding: 18px 18px 20px;
  border-radius: var(--r-md);
  background: var(--paper-50);
  border: 1px solid rgba(43, 59, 82, 0.14);
  border-left: 3px solid var(--brass-500);
}

.page-faq .step-card__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--brass-500);
}

.page-faq .step-card__title {
  margin: 8px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink-950);
}

.page-faq .step-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--slate-700);
}

/* ---------- 下载额度 ---------- */
.page-faq .quota-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  padding: 20px;
  border-radius: var(--r-lg);
  background: var(--mist-200);
}

.page-faq .quota-panel__label {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate-700);
}

.page-faq .quota-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .quota-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--r-pill);
  background: var(--paper-50);
}

.page-faq .quota-list__key {
  font-size: 13.5px;
  color: var(--slate-700);
}

.page-faq .quota-list__val {
  font-size: 14px;
  font-weight: 600;
  color: var(--ink-950);
  background: rgba(232, 106, 43, 0.12);
  color: var(--signal-500);
  border-radius: var(--r-pill);
  padding: 3px 11px;
}

.page-faq .quota-panel__col--desktop {
  padding-top: 16px;
  border-top: 1px solid rgba(43, 59, 82, 0.14);
}

.page-faq .quota-panel__text {
  margin: 0 0 16px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate-700);
}

/* ---------- 版本 ---------- */
.page-faq .version-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .version-card {
  padding: 20px;
  border-radius: var(--r-md);
  background: var(--ink-900);
  color: var(--paper-50);
}

.page-faq .version-card__num {
  display: block;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--brass-300);
}

.page-faq .version-card__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--paper-50);
}

.page-faq .version-card__text {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: rgba(215, 222, 232, 0.82);
}

.page-faq .faq-version__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 20px;
}

/* ---------- 联系支持 ---------- */
.page-faq .faq-support {
  padding-top: 52px;
}

.page-faq .faq-support__inner {
  padding: 28px 22px 30px;
  border-radius: var(--r-lg);
  background: var(--ink-950);
  color: var(--paper-50);
  background-image:
    repeating-linear-gradient(0deg, rgba(215, 222, 232, 0.05) 0 1px, transparent 1px 28px),
    repeating-linear-gradient(90deg, rgba(215, 222, 232, 0.05) 0 1px, transparent 1px 28px);
}

.page-faq .faq-support__title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(1.25rem, 4.2vw, 1.6rem);
  color: var(--paper-50);
}

.page-faq .faq-support__text {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: rgba(215, 222, 232, 0.82);
  max-width: 48ch;
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 20px 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-support__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 12px 14px;
  border-radius: var(--r-sm);
  background: rgba(215, 222, 232, 0.07);
  border: 1px solid rgba(215, 222, 232, 0.12);
}

.page-faq .faq-support__key {
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--brass-300);
}

.page-faq .faq-support__val {
  font-size: 13.5px;
  color: var(--paper-50);
  word-break: break-all;
}

.page-faq .faq-support .btn--solid {
  background: var(--brass-500);
  color: var(--ink-950);
}

.page-faq .faq-support .btn--solid:hover,
.page-faq .faq-support .btn--solid:focus-visible {
  background: var(--brass-300);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .step-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .version-card:first-child {
    grid-column: 1 / -1;
  }

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

  .page-faq .quota-panel__col--desktop {
    padding-top: 0;
    padding-left: 24px;
    border-top: 0;
    border-left: 1px solid rgba(43, 59, 82, 0.14);
    display: flex;
    flex-direction: column;
  }

  .page-faq .quota-panel__col--desktop .btn {
    margin-top: auto;
    align-self: flex-start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    padding: 56px 0 0;
    position: sticky;
    top: 0;
    align-self: start;
    height: 100vh;
    max-height: 620px;
    border-right: 1px solid var(--faq-line);
  }

  .page-faq .faq-rail__num {
    font-size: 20px;
    letter-spacing: 0.08em;
    color: var(--brass-500);
  }

  .page-faq .faq-rail__line {
    flex: 1 1 auto;
    width: 1px;
    background: linear-gradient(to bottom, rgba(183, 121, 60, 0.55), rgba(183, 121, 60, 0.08));
  }

  .page-faq .faq-rail__tick {
    writing-mode: vertical-rl;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.3em;
    color: var(--slate-500);
    padding-bottom: 24px;
  }

  .page-faq .faq-main {
    max-width: 1120px;
    margin: 0;
    padding: 28px 44px 96px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: end;
    gap: 40px;
    padding: 26px 0 52px;
  }

  .page-faq .faq-hero__media {
    align-self: stretch;
  }

  .page-faq .faq-hero__media img {
    height: 100%;
    aspect-ratio: auto;
    min-height: 300px;
  }

  .page-faq .section {
    padding-top: 60px;
  }

  .page-faq .faq-cost__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .cost-head {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) auto auto;
    gap: 16px;
    padding: 0 4px 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--slate-500);
    border-bottom: 1px solid var(--faq-line);
  }

  .page-faq .cost-head span:nth-child(2),
  .page-faq .cost-head span:nth-child(3) {
    text-align: right;
  }

  .page-faq .cost-row__sum {
    grid-template-columns: minmax(0, 1.1fr) auto auto;
    gap: 16px;
  }

  .page-faq .cost-row__fee {
    grid-column: auto;
    font-size: 12.5px;
    text-align: right;
    color: var(--slate-700);
  }

  .page-faq .cost-row__body {
    padding-left: 26px;
    padding-right: 26px;
  }

  .page-faq .step-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }

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

  .page-faq .version-card:first-child {
    grid-column: auto;
  }

  .page-faq .version-card:nth-child(2) {
    margin-top: 22px;
  }

  .page-faq .faq-support__inner {
    padding: 40px 40px 44px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-main {
    padding-left: 64px;
    padding-right: 64px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .btn,
  .page-faq .chip,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after {
    transition: none;
  }

  .page-faq .btn:hover,
  .page-faq .btn:focus-visible {
    transform: none;
  }
}
<<<END>>>