.page-faq {
  --faq-rail: 232px;
  --faq-tint: rgba(95, 227, 195, 0.08);
  padding-bottom: var(--space-5);
}

.page-faq .container {
  padding-inline: var(--shell-pad);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: var(--space-4) 0 var(--space-3);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset-inline-end: -18%;
  inset-block-start: -30%;
  width: min(520px, 78vw);
  aspect-ratio: 1;
  pointer-events: none;
  background:
    radial-gradient(circle at 32% 38%, rgba(255, 61, 127, 0.28), transparent 62%),
    radial-gradient(circle at 68% 62%, rgba(95, 227, 195, 0.24), transparent 60%);
  filter: blur(6px);
  opacity: 0.75;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: var(--space-2) 0 0;
  font-size: clamp(46px, 11vw, 112px);
  font-weight: 300;
  letter-spacing: -0.035em;
  line-height: 0.94;
  color: var(--ice);
}

.page-faq .faq-hero__lede {
  max-width: 62ch;
  margin: var(--space-2) 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  min-height: 56px;
  margin-top: var(--space-3);
  padding: 0 var(--space-2);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 2px;
  color: var(--ice);
  font: inherit;
  font-size: 15px;
  text-align: start;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-search:hover {
  border-color: var(--mint);
  transform: translateY(-2px);
}

.page-faq .faq-search:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.page-faq .faq-search__icon {
  flex: none;
  width: 14px;
  height: 14px;
  border: 2px solid var(--mint);
  border-radius: 50%;
  position: relative;
}

.page-faq .faq-search__icon::after {
  content: "";
  position: absolute;
  inset-block-start: 10px;
  inset-inline-start: 10px;
  width: 7px;
  height: 2px;
  background: var(--mint);
  transform: rotate(45deg);
}

.page-faq .faq-search__label {
  flex: 1;
  color: var(--mist);
}

.page-faq .faq-search__kbd {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mist);
  border: 1px solid var(--line);
  padding: 4px 6px;
  border-radius: 2px;
}

.page-faq .faq-hero__quick {
  display: grid;
  gap: 12px;
  margin-top: var(--space-3);
}

.page-faq .faq-quick {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  text-decoration: none;
  color: var(--ice);
  background: linear-gradient(150deg, rgba(18, 45, 74, 0.9), rgba(11, 29, 51, 0.55));
  border: 1px solid var(--line);
  border-inline-start: 3px solid var(--rose);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 14px), calc(100% - 14px) 100%, 0 100%);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-quick:hover {
  border-inline-start-color: var(--mint);
  transform: translateY(-4px);
}

.page-faq .faq-quick:focus-visible {
  outline: 2px solid var(--mint);
  outline-offset: 3px;
}

.page-faq .faq-quick__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--rose-soft);
}

.page-faq .faq-quick__title {
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.page-faq .faq-quick__desc {
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

/* 布局 */
.page-faq .faq-layout {
  display: grid;
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.page-faq .faq-rail {
  border: 1px solid var(--line);
  background: rgba(11, 29, 51, 0.6);
  padding: 18px 16px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  min-height: 44px;
  padding: 10px 8px;
  font-size: 14px;
  line-height: 1.4;
  color: var(--mist);
  text-decoration: none;
  border-inline-start: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--ice);
  border-inline-start-color: var(--rose);
  background: rgba(255, 61, 127, 0.08);
  outline: none;
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  line-height: 1.7;
  color: var(--mist);
}

/* 章节板 */
.page-faq .faq-block {
  padding-top: var(--space-3);
  scroll-margin-top: 96px;
}

.page-faq .faq-block + .faq-block {
  margin-top: var(--space-4);
  border-top: 1px solid var(--line);
}

.page-faq .faq-block h2 {
  margin: 10px 0 0;
  font-size: clamp(26px, 4.4vw, 40px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.12;
  color: var(--ice);
}

.page-faq .faq-block__intro {
  max-width: 66ch;
  margin: var(--space-2) 0 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-block__aside {
  margin: var(--space-3) 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
  background: var(--faq-tint);
  border-inline-start: 3px solid var(--mint);
}

.page-faq .faq-block a {
  color: var(--ice);
  text-decoration: underline;
  text-decoration-color: rgba(95, 227, 195, 0.6);
  text-underline-offset: 3px;
}

.page-faq .faq-block a:hover {
  color: var(--mint);
}

/* 步骤条 */
.page-faq .step-track {
  list-style: none;
  margin: var(--space-3) 0 0;
  padding: 0;
  display: grid;
  gap: 0;
}

.page-faq .step-track__item {
  position: relative;
  padding: 0 0 26px 34px;
}

.page-faq .step-track__item::before {
  content: "";
  position: absolute;
  inset-block-start: 14px;
  inset-inline-start: 5px;
  width: 1px;
  height: calc(100% - 6px);
  background: linear-gradient(180deg, var(--line-strong), transparent);
}

.page-faq .step-track__item:last-child {
  padding-bottom: 0;
}

.page-faq .step-track__item:last-child::before {
  display: none;
}

.page-faq .step-track__dot {
  position: absolute;
  inset-block-start: 7px;
  inset-inline-start: 0;
}

.page-faq .step-track__item--done .step-track__dot {
  box-shadow: 0 0 0 4px rgba(95, 227, 195, 0.14);
}

.page-faq .step-track__item--now .step-track__dot {
  box-shadow: 0 0 0 4px rgba(255, 61, 127, 0.16);
}

.page-faq .step-track__title {
  margin: 0;
  font-size: 19px;
  font-weight: 700;
  color: var(--ice);
  letter-spacing: -0.01em;
}

.page-faq .step-track__item--done .step-track__title {
  color: var(--mint-soft);
}

.page-faq .step-track__item--now .step-track__title {
  color: var(--rose-soft);
}

.page-faq .step-track__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 图片 */
.page-faq .faq-figure {
  margin: var(--space-3) 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* 检查清单 */
.page-faq .check-list {
  margin-top: var(--space-3);
  padding: 18px 16px;
  background: rgba(18, 45, 74, 0.55);
  border: 1px solid var(--line);
  border-radius: 2px;
}

.page-faq .check-list__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

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

.page-faq .check-list__item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ice);
}

.page-faq .check-list__mark {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-900);
  background: var(--gold);
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  margin-top: 3px;
}

/* 浏览器适配 */
.page-faq .browser-grid {
  display: grid;
  gap: 16px;
  margin-top: var(--space-3);
}

.page-faq .browser-card {
  padding: 18px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .browser-card__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .browser-card__list {
  margin: 0;
  padding-inline-start: 18px;
  display: grid;
  gap: 8px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .browser-card__list li::marker {
  color: var(--mint);
}

.page-faq .browser-svg {
  padding: 14px;
  background: linear-gradient(155deg, rgba(18, 45, 74, 0.9), rgba(6, 16, 31, 0.85));
  border: 1px solid var(--line);
  display: grid;
  place-items: center;
}

.page-faq .browser-svg svg {
  display: block;
  width: 100%;
  height: auto;
}

/* 检索 */
.page-faq .dim-chips {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--space-2) 0 0;
  padding: 0;
}

.page-faq .dim-chips .chip {
  font-size: 13px;
  padding: 7px 12px;
}

.page-faq .example-list {
  margin-top: var(--space-3);
  display: grid;
  gap: 12px;
}

.page-faq .example-list__item {
  padding: 14px 16px;
  border-inline-start: 2px solid rgba(255, 61, 127, 0.55);
  background: rgba(11, 29, 51, 0.5);
}

.page-faq .example-list__key {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .example-list__text {
  margin: 6px 0 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--mist);
}

/* 同步状态 */
.page-faq .sync-legend {
  margin-top: var(--space-3);
  display: grid;
  gap: 10px;
}

.page-faq .sync-legend__item {
  display: grid;
  grid-template-columns: 14px 88px 1fr;
  align-items: start;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  background: rgba(18, 45, 74, 0.4);
}

.page-faq .sync-legend__item .status-dot {
  margin-top: 6px;
}

.page-faq .sync-legend__label {
  font-size: 14px;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .sync-legend__desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* 问答折叠 */
.page-faq .qa-group {
  margin-top: var(--space-3);
}

.page-faq .qa-group__title {
  margin: 0 0 10px;
  padding-bottom: 8px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.16em;
  color: var(--mint);
  border-bottom: 1px solid var(--line);
}

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

.page-faq .qa__summary {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 12px 4px;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ice);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur) var(--ease);
}

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

.page-faq .qa__summary::after {
  content: "+";
  margin-inline-start: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--rose-soft);
}

.page-faq .qa[open] .qa__summary {
  color: var(--mint-soft);
}

.page-faq .qa[open] .qa__summary::after {
  content: "−";
  color: var(--mint);
}

.page-faq .qa__summary:hover {
  color: var(--rose-soft);
}

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

.page-faq .qa__body {
  padding: 0 4px 16px 0;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* 联系板 */
.page-faq .contact-board {
  margin-top: var(--space-3);
  padding: 20px 16px;
  background: linear-gradient(155deg, rgba(18, 45, 74, 0.92), rgba(11, 29, 51, 0.7));
  border: 1px solid var(--line-strong);
}

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

.page-faq .contact-board__list .contact-item {
  display: grid;
  gap: 2px;
}

.page-faq .contact-board__list .contact-item__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .contact-board__list .contact-item__value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ice);
  overflow-wrap: anywhere;
}

.page-faq .contact-board__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .contact-board__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

.page-faq .contact-board__actions .btn {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 20px;
}

/* 桌面栅格 */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: var(--space-5);
  }

  .page-faq .faq-search {
    max-width: 560px;
  }

  .page-faq .faq-hero__quick {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: var(--space-4);
    align-items: start;
    margin-top: var(--space-4);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-body {
    max-width: 860px;
  }

  .page-faq .browser-grid {
    grid-template-columns: 1.15fr 1fr;
    align-items: stretch;
  }

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

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

  .page-faq .sync-legend__item {
    grid-template-columns: 14px 1fr;
  }

  .page-faq .sync-legend__desc {
    grid-column: 1 / -1;
  }

  .page-faq .contact-board {
    padding: 24px 28px;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search,
  .page-faq .faq-quick,
  .page-faq .faq-rail__link,
  .page-faq .qa__summary {
    transition: none;
  }

  .page-faq .faq-search:hover,
  .page-faq .faq-quick:hover {
    transform: none;
  }
}
<<<END>>>