.page-faq {
  --faq-scroll-offset: calc(var(--header-h) + 112px);
  background: var(--ink);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(140deg, rgba(14, 42, 34, 0.96) 0%, rgba(11, 15, 14, 0.98) 64%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -18%;
  width: min(640px, 96vw);
  height: 160%;
  background: linear-gradient(200deg, rgba(43, 217, 208, 0.18), rgba(43, 217, 208, 0) 62%);
  transform: rotate(12deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--flare) 0%, rgba(255, 90, 31, 0) 42%);
  pointer-events: none;
}

.page-faq .faq-hero-media {
  position: absolute;
  inset: 0;
  opacity: 0.26;
  pointer-events: none;
}

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

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 1;
  padding-top: 32px;
  padding-bottom: 40px;
}

.page-faq .faq-hero-inner .breadcrumb {
  margin-bottom: 22px;
  font-size: 13px;
}

.page-faq .faq-hero-inner .eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--text);
}

.page-faq .faq-hero-inner .lede {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-hero-meta li {
  min-width: 0;
  padding: 13px 12px;
  background: rgba(18, 59, 48, 0.6);
}

.page-faq .meta-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--flare);
}

.page-faq .meta-label {
  display: block;
  margin-top: 6px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 命令栏 ---------- */
.page-faq .faq-console {
  position: sticky;
  top: var(--header-h);
  z-index: 6;
  background: rgba(11, 15, 14, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-console-inner {
  display: grid;
  gap: 12px;
  padding-top: 14px;
  padding-bottom: 14px;
}

.page-faq .faq-search-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-search-input {
  box-sizing: border-box;
  width: 100%;
  padding: 11px 12px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.16s var(--ease), box-shadow 0.16s var(--ease);
}

.page-faq .faq-search-input::placeholder {
  color: var(--muted);
}

.page-faq .faq-search-input:focus-visible {
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(43, 217, 208, 0.32);
}

.page-faq .faq-search-hint {
  margin: 6px 0 0;
  font-size: 11px;
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-chips .chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 11px;
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--muted);
  text-decoration: none;
  background: rgba(18, 59, 48, 0.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: color 0.16s var(--ease), border-color 0.16s var(--ease), background 0.16s var(--ease);
}

.page-faq .faq-chips .chip:hover,
.page-faq .faq-chips .chip:focus-visible {
  color: var(--text);
  border-color: var(--cyan);
  background: rgba(43, 217, 208, 0.1);
}

.page-faq .faq-chips .chip-count {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding-top: 40px;
  padding-bottom: 48px;
}

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

.page-faq .rail-title {
  margin: 0 0 10px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--line);
}

.page-faq .rail-list {
  display: grid;
  gap: 2px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
}

.page-faq .rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.16s var(--ease), background 0.16s var(--ease), border-color 0.16s var(--ease);
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  color: var(--text);
  background: rgba(18, 59, 48, 0.55);
}

.page-faq .rail-link.is-active {
  color: var(--text);
  border-left-color: var(--cyan);
  background: rgba(43, 217, 208, 0.08);
}

.page-faq .rail-num {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .rail-note {
  padding: 14px;
  background: var(--panel);
  border: 1px solid var(--line);
}

.page-faq .rail-note p {
  margin: 0 0 12px;
  font-size: 13px;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 问题组 ---------- */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  margin-bottom: 38px;
  scroll-margin-top: var(--faq-scroll-offset);
}

.page-faq .group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.page-faq .group-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--flare);
}

.page-faq .group-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 21px;
  font-weight: 700;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .group-lede {
  margin: 10px 0 16px;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-faq .faq-group .qa:last-of-type {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--text);
  list-style: none;
  cursor: pointer;
  transition: color 0.16s var(--ease);
}

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

.page-faq .qa summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--flare);
  transition: transform 0.18s var(--ease);
}

.page-faq .qa[open] summary {
  color: var(--white);
}

.page-faq .qa[open] summary::after {
  transform: rotate(45deg);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .qa-body {
  margin: 0;
  padding: 0 0 16px;
  max-width: 70ch;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 刷新节奏 ---------- */
.page-faq .beat-strip {
  display: grid;
  gap: 10px;
  margin: 0 0 18px;
  padding: 14px;
  list-style: none;
  background: rgba(18, 59, 48, 0.5);
  border: 1px solid var(--line);
}

.page-faq .beat-strip li {
  padding-left: 12px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--text);
  border-left: 2px solid var(--cyan);
}

.page-faq .beat-time {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--flare);
}

/* ---------- 联系面板 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: 22px;
  margin-bottom: 44px;
  padding: 20px;
  background: linear-gradient(150deg, rgba(18, 59, 48, 0.92), rgba(11, 15, 14, 0.94));
  border: 1px solid var(--line);
}

.page-faq .support-media {
  min-width: 0;
  border: 1px solid var(--line);
  line-height: 0;
}

.page-faq .support-media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  max-width: 100%;
}

.page-faq .support-copy {
  min-width: 0;
}

.page-faq .support-copy .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .support-copy h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  line-height: 1.24;
  color: var(--text);
}

.page-faq .support-copy > p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .support-facts {
  display: grid;
  gap: 1px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .support-facts li {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 12px;
  padding: 10px 12px;
  font-size: 13px;
  background: rgba(11, 15, 14, 0.76);
}

.page-faq .support-facts span {
  color: var(--muted);
  letter-spacing: 0.02em;
}

.page-faq .support-facts strong {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
  word-break: break-all;
}

/* ---------- 收尾 CTA ---------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  background: var(--deep);
  border-top: 1px solid var(--line);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(43, 217, 208, 0.08) 0 1px, transparent 1px 52px);
  pointer-events: none;
}

.page-faq .faq-cta-inner {
  position: relative;
  display: grid;
  gap: 18px;
  padding-top: 36px;
  padding-bottom: 42px;
}

.page-faq .faq-cta-inner h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-cta-inner p {
  margin: 0;
  max-width: 52ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq h1 {
    font-size: clamp(44px, 5.2vw, 62px);
  }

  .page-faq .faq-hero-inner {
    padding-top: 44px;
    padding-bottom: 52px;
  }

  .page-faq .faq-hero-inner .lede {
    font-size: 16px;
  }

  .page-faq .meta-num {
    font-size: 30px;
  }

  .page-faq .meta-label {
    font-size: 12px;
  }

  .page-faq .group-title {
    font-size: 27px;
  }

  .page-faq .group-lede {
    font-size: 15px;
  }

  .page-faq .qa summary {
    padding: 18px 0;
    font-size: 16px;
  }

  .page-faq .qa-body {
    font-size: 15px;
  }

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

  .page-faq .beat-strip li {
    padding: 0 12px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-console-inner {
    grid-template-columns: minmax(240px, 320px) minmax(0, 1fr);
    align-items: start;
    gap: 26px;
  }

  .page-faq .faq-chips {
    padding-top: 16px;
  }

  .page-faq .faq-support {
    grid-template-columns: 300px minmax(0, 1fr);
    align-items: center;
    gap: 30px;
    padding: 28px;
  }

  .page-faq .support-media img {
    aspect-ratio: 1 / 1;
  }

  .page-faq .support-copy h2 {
    font-size: 26px;
  }

  .page-faq .faq-cta-inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
    padding-top: 46px;
    padding-bottom: 50px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 52px;
    padding-top: 60px;
    padding-bottom: 64px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 150px);
    align-self: start;
  }

  .page-faq .faq-group {
    margin-bottom: 46px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa summary::after,
  .page-faq .rail-link,
  .page-faq .faq-chips .chip,
  .page-faq .faq-search-input {
    transition: none;
  }
}
<<<END>>>