.page-faq {
  background: var(--ink);
  color: var(--snow);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

/* ---------- 首屏框景 ---------- */
.page-faq .guide-hero {
  padding: 16px 0 34px;
}

.page-faq .guide-hero__frame {
  position: relative;
  overflow: hidden;
  padding: 28px 20px 30px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
  background:
    radial-gradient(120% 150% at 92% 0%, rgba(55, 200, 195, 0.18), transparent 58%),
    radial-gradient(120% 130% at 0% 100%, rgba(163, 22, 33, 0.3), transparent 62%),
    var(--panel);
}

.page-faq .guide-hero__frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 12px;
  background: repeating-linear-gradient(90deg, var(--line-soft) 0 1px, transparent 1px 24px);
  pointer-events: none;
}

.page-faq .guide-hero__kicker {
  margin: 6px 0 16px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .guide-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 8.6vw, 72px);
  line-height: 1.04;
  letter-spacing: -0.02em;
}

.page-faq .guide-hero__title .mark {
  color: var(--red-bright);
}

.page-faq .guide-hero__lead {
  max-width: 66ch;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.9;
  color: rgba(244, 241, 234, 0.84);
}

.page-faq .hero-meta {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .hero-meta__item {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: baseline;
  padding: 11px 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-soft);
  background: rgba(7, 11, 18, 0.5);
}

.page-faq .hero-meta__key {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .hero-meta__val {
  font-size: 15px;
  color: var(--snow);
}

/* ---------- 章节骨架 ---------- */
.page-faq .guide-section {
  padding: 40px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .guide-head {
  margin-bottom: 24px;
}

.page-faq .guide-head .section-index {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--gold);
}

.page-faq .guide-head__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 5.4vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.01em;
}

.page-faq .guide-head__sub {
  max-width: 62ch;
  margin: 0;
  font-size: 16px;
  color: rgba(244, 241, 234, 0.76);
}

/* ---------- 01 三步路径 ---------- */
.page-faq .steps {
  position: relative;
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.page-faq .steps__line {
  display: none;
  position: absolute;
  top: 23px;
  left: 0;
  width: 100%;
  height: 2px;
}

.page-faq .steps__line line {
  stroke: var(--cyan);
  stroke-width: 2;
}

.page-faq .step {
  position: relative;
  z-index: 1;
}

.page-faq .step__dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border: 2px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink);
  color: var(--cyan);
  font-family: var(--font-data);
  font-size: 15px;
  letter-spacing: 0.06em;
}

.page-faq .step--2 .step__dot {
  border-color: var(--gold);
  color: var(--gold);
}

.page-faq .step--3 .step__dot {
  border-color: var(--red-bright);
  color: var(--red-bright);
}

.page-faq .step__body {
  margin-top: 14px;
  padding: 20px 18px 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-soft);
  background: var(--panel);
}

.page-faq .step__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .step__text {
  margin: 0 0 12px;
  font-size: 15.5px;
  color: rgba(244, 241, 234, 0.78);
}

.page-faq .step__result {
  margin: 0 0 14px;
  padding-left: 14px;
  border-left: 2px solid var(--aurora-deep);
  font-size: 14.5px;
  color: var(--mist);
}

.page-faq .step__link {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 200, 195, 0.45);
  transition: color 180ms ease, transform 180ms ease;
}

.page-faq .step__link:hover,
.page-faq .step__link:focus-visible {
  color: var(--red-bright);
  border-bottom-color: var(--red-bright);
  transform: translateX(4px);
}

/* ---------- 图框 ---------- */
.page-faq .guide-figure {
  margin: 28px 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
  overflow: hidden;
  background: var(--graphite);
}

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

.page-faq .guide-figure__caption {
  padding: 12px 16px;
  font-family: var(--font-data);
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mist);
  border-top: 1px solid var(--line-soft);
}

/* ---------- 02 版本号 ---------- */
.page-faq .version-layout {
  display: grid;
  gap: 24px;
}

.page-faq .version-copy p {
  margin: 0 0 16px;
  color: rgba(244, 241, 234, 0.82);
}

.page-faq .guide-figure--side {
  margin-top: 0;
}

.page-faq .version-demo {
  position: relative;
  margin-top: 22px;
  padding: 22px 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
  background: var(--aurora-deep);
}

.page-faq .vchip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  background: var(--ink);
}

.page-faq .vchip__label {
  font-family: var(--font-data);
  font-size: 11.5px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-faq .vchip__value {
  font-family: var(--font-data);
  font-size: 14.5px;
  color: var(--cyan);
}

.page-faq .version-demo__tip {
  margin: 12px 0 0;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--mist);
}

.page-faq .vrail {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .vrail__item {
  flex: 1 1 140px;
  padding: 14px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-soft);
  background: rgba(7, 11, 18, 0.55);
}

.page-faq .vrail__item--current {
  border-color: var(--cyan);
  background: rgba(55, 200, 195, 0.1);
}

.page-faq .vrail__num {
  display: block;
  font-family: var(--font-data);
  font-size: 22px;
  letter-spacing: 0.08em;
  color: var(--snow);
}

.page-faq .vrail__item--current .vrail__num {
  color: var(--cyan);
}

.page-faq .vrail__text {
  display: block;
  margin-top: 6px;
  font-size: 13.5px;
  color: var(--mist);
}

/* ---------- 03 对照栏目 ---------- */
.page-faq .col-grid {
  display: grid;
  gap: 16px;
}

.page-faq .col-card {
  padding: 20px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-soft);
  background: var(--panel);
}

.page-faq .col-card__num {
  display: block;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.28em;
  color: var(--gold);
}

.page-faq .col-card__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 700;
}

.page-faq .col-card__text {
  margin: 0;
  font-size: 15px;
  color: rgba(244, 241, 234, 0.76);
}

.page-faq .path-list {
  margin-top: 26px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .path-row {
  display: grid;
  gap: 6px;
  padding: 18px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .path-row__key {
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--cyan);
}

.page-faq .path-row__val {
  font-size: 15.5px;
  color: rgba(244, 241, 234, 0.78);
}

.page-faq .path-note {
  margin: 22px 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--red);
  background: rgba(163, 22, 33, 0.14);
  font-size: 15px;
  color: rgba(244, 241, 234, 0.86);
}

/* ---------- 04 订阅 ---------- */
.page-faq .sub-grid {
  display: grid;
  gap: 18px;
}

.page-faq .sub-card {
  padding: 22px 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
  background: var(--panel);
}

.page-faq .sub-card__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--snow);
}

.page-faq .sub-card__list {
  margin: 0;
  padding-left: 20px;
  font-size: 15.5px;
  color: rgba(244, 241, 234, 0.78);
}

.page-faq .sub-card__list li {
  margin-bottom: 10px;
}

.page-faq .sub-card__link {
  display: inline-block;
  margin-top: 6px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(227, 181, 5, 0.45);
  transition: color 180ms ease, transform 180ms ease;
}

.page-faq .sub-card__link:hover,
.page-faq .sub-card__link:focus-visible {
  color: var(--red-bright);
  border-bottom-color: var(--red-bright);
  transform: translateX(4px);
}

/* ---------- 05 问答 ---------- */
.page-faq .qa-group {
  margin-bottom: 34px;
}

.page-faq .qa-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.page-faq .qa-group__tag {
  display: inline-block;
  padding: 5px 14px;
  border-radius: 999px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.18em;
  background: var(--gold);
  color: var(--ink);
}

.page-faq .qa-group--version .qa-group__tag {
  background: var(--cyan);
  color: var(--ink);
}

.page-faq .qa-group--pick .qa-group__tag {
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
}

.page-faq .qa-group--service .qa-group__tag {
  background: transparent;
  border: 1px solid var(--cyan);
  color: var(--cyan);
}

.page-faq .qa-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
}

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

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--snow);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q:hover {
  color: var(--red-bright);
}

.page-faq .qa__tri {
  flex: 0 0 auto;
  width: 0;
  height: 0;
  margin-top: 9px;
  border-left: 7px solid var(--cyan);
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  transition: transform 200ms ease;
}

.page-faq .qa[open] .qa__tri {
  transform: rotate(90deg);
}

.page-faq .qa__a {
  padding: 0 0 18px 21px;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 241, 234, 0.76);
}

.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(55, 200, 195, 0.45);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--red-bright);
  border-bottom-color: var(--red-bright);
}

/* ---------- 06 帮助收束 ---------- */
.page-faq .help-panel {
  padding: 28px 20px 30px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-organic);
  background:
    linear-gradient(160deg, rgba(163, 22, 33, 0.28), transparent 58%),
    var(--panel);
}

.page-faq .help-panel .section-index {
  display: block;
  margin-bottom: 12px;
  font-family: var(--font-data);
  font-size: 13px;
  letter-spacing: 0.32em;
  color: var(--gold);
}

.page-faq .help-panel__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(23px, 5.4vw, 34px);
  font-weight: 800;
  line-height: 1.24;
}

.page-faq .help-panel__text {
  max-width: 60ch;
  margin: 0 0 22px;
  color: rgba(244, 241, 234, 0.82);
}

.page-faq .help-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .hero-meta {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .hero-meta__item {
    flex-direction: column;
    align-items: flex-start;
  }

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

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

  .page-faq .path-row {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 24px;
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .guide-hero {
    padding: 24px 0 48px;
  }

  .page-faq .guide-hero__frame {
    padding: 46px 44px 44px;
  }

  .page-faq .guide-section {
    padding: 62px 0;
  }

  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 34px;
    margin-top: 42px;
  }

  .page-faq .steps__line {
    display: block;
  }

  .page-faq .col-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .qa-group {
    margin-bottom: 42px;
  }
}

@media (min-width: 1000px) {
  .page-faq .version-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .help-panel {
    padding: 48px 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step__link,
  .page-faq .sub-card__link,
  .page-faq .qa__tri {
    transition: none;
  }

  .page-faq .step__link:hover,
  .page-faq .step__link:focus-visible,
  .page-faq .sub-card__link:hover,
  .page-faq .sub-card__link:focus-visible {
    transform: none;
  }
}