.page-faq {
  --faq-axis-w: 14.5rem;
  --faq-muted: #4A5B6E;
  --faq-line: rgba(11, 31, 51, .13);
  --faq-line-soft: rgba(11, 31, 51, .07);
  --faq-shadow: 0 16px 34px -26px rgba(11, 31, 51, .55);
  --faq-hint-bg: rgba(201, 162, 39, .09);
  --faq-card: #FFFFFF;

  background: var(--moon);
  color: var(--text);
  font-family: var(--sans);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background:
    linear-gradient(180deg, #0B1F33 0%, #13314F 100%);
  color: var(--moon);
  padding: clamp(1.75rem, 4vw, 3rem) 0 clamp(2.75rem, 6.5vw, 5rem);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: .55;
}

.page-faq .faq-hero .crumb {
  color: var(--on-dark-dim);
  font-size: .8125rem;
  letter-spacing: .04em;
  margin: 0 0 clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-hero .crumb a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .faq-hero .crumb a:hover {
  border-bottom-color: var(--gold);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(1.75rem, 4vw, 3rem);
}

.page-faq .faq-hero-lead {
  min-width: 0;
}

.page-faq .faq-kicker {
  margin: 0;
  font-size: .8125rem;
  letter-spacing: .22em;
  color: var(--gold);
  font-weight: 500;
}

.page-faq .faq-hero h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.85rem, 4.6vw, 3.4rem);
  line-height: 1.2;
  letter-spacing: -.015em;
  color: var(--moon);
  margin: .875rem 0 0;
  max-width: 22ch;
}

.page-faq .faq-hero-text {
  margin: clamp(1rem, 2.5vw, 1.5rem) 0 0;
  max-width: 40rem;
  font-size: clamp(.9688rem, 1.6vw, 1.0625rem);
  line-height: 1.8;
  color: var(--on-dark);
}

.page-faq .faq-hero-panel {
  border: 1px solid var(--line);
  background: rgba(247, 244, 236, .045);
  padding: clamp(1.125rem, 3vw, 1.625rem);
  position: relative;
}

.page-faq .faq-hero-panel::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 3.25rem;
  height: 3px;
  background: var(--gold);
}

.page-faq .faq-hero-panel-title {
  margin: 0 0 1rem;
  font-family: var(--serif);
  font-size: .9375rem;
  font-weight: 700;
  letter-spacing: .12em;
  color: var(--gold-soft);
}

.page-faq .faq-hero-facts {
  margin: 0;
  display: grid;
  gap: .875rem;
}

.page-faq .faq-hero-fact {
  display: grid;
  gap: .25rem;
  padding-bottom: .875rem;
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .faq-hero-fact:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-hero-fact dt {
  font-size: .75rem;
  letter-spacing: .1em;
  color: var(--on-dark-dim);
}

.page-faq .faq-hero-fact dd {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--moon);
}

@media (min-width: 940px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr);
    align-items: start;
    gap: clamp(2.5rem, 5vw, 4rem);
  }
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding-block: clamp(2.25rem, 6vw, 4.5rem);
}

.page-faq .faq-axis-wrap {
  min-width: 0;
}

.page-faq .faq-axis {
  border-top: 2px solid var(--gold);
  padding-top: .875rem;
}

.page-faq .faq-axis-title {
  margin: 0 0 .75rem;
  font-family: var(--serif);
  font-size: .8125rem;
  font-weight: 700;
  letter-spacing: .2em;
  color: var(--ink-2);
}

.page-faq .faq-axis-list {
  list-style: none;
  margin: 0;
  padding: 0 0 .375rem;
  display: flex;
  gap: .375rem;
  overflow-x: auto;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-axis-list li {
  flex: none;
}

.page-faq .faq-axis-list .index-link {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  padding: .5rem .75rem;
  font-size: .9063rem;
  color: var(--ink-2);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid var(--faq-line);
  border-left: 3px solid transparent;
  background: #fff;
  transition: color var(--dur) var(--ease),
              background var(--dur) var(--ease),
              border-color var(--dur) var(--ease);
}

.page-faq .faq-axis-list .index-link:hover {
  background: var(--paper);
  border-color: var(--gold-soft);
  color: var(--ink);
}

.page-faq .faq-axis-list .index-link[data-active] {
  background: var(--paper);
  border-color: var(--gold);
  border-left-color: var(--gold);
  color: var(--ink);
  font-weight: 600;
}

.page-faq .faq-axis-num {
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--gold);
}

.page-faq .faq-content {
  min-width: 0;
  display: grid;
  gap: clamp(2.5rem, 6vw, 4.5rem);
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-axis-w) minmax(0, 1fr);
    gap: clamp(2.25rem, 5vw, 4rem);
    align-items: start;
  }

  .page-faq .faq-axis {
    position: sticky;
    top: 7.5rem;
  }

  .page-faq .faq-axis-list {
    flex-direction: column;
    gap: .125rem;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-axis-list li {
    flex: initial;
  }

  .page-faq .faq-axis-list .index-link {
    width: 100%;
    border: 0;
    border-left: 3px solid transparent;
    background: transparent;
    padding: .5625rem .75rem;
  }

  .page-faq .faq-axis-list .index-link:hover {
    background: rgba(201, 162, 39, .1);
    border-left-color: var(--gold-soft);
  }

  .page-faq .faq-axis-list .index-link[data-active] {
    background: var(--paper);
    border-left-color: var(--gold);
  }
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-block {
  scroll-margin-top: 6.5rem;
}

.page-faq .faq-block-head {
  display: grid;
  gap: .5rem;
  margin-bottom: clamp(1.25rem, 3vw, 1.875rem);
  padding-bottom: clamp(1rem, 2.5vw, 1.375rem);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-block-no {
  margin: 0;
  font-family: var(--mono);
  font-size: .8125rem;
  letter-spacing: .22em;
  color: var(--gold);
}

.page-faq .faq-block-title {
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(1.35rem, 3.2vw, 1.95rem);
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--ink);
  max-width: 24ch;
}

.page-faq .faq-block-intro {
  margin: 0;
  max-width: 44rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

.page-faq .faq-hint {
  margin: 1.25rem 0 0;
  padding: .875rem 1.125rem;
  background: var(--faq-hint-bg);
  border: 1px solid rgba(201, 162, 39, .38);
  border-left-width: 4px;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink-2);
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding: clamp(1rem, 2.6vw, 1.5rem);
  background: var(--faq-card);
  border: 1px solid var(--faq-line-soft);
  border-left: 3px solid var(--gold);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-step-num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.125rem);
  line-height: .95;
  letter-spacing: -.03em;
  color: var(--gold);
}

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

.page-faq .faq-step-body h3 {
  margin: 0 0 .4rem;
  font-family: var(--sans);
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-step-body p {
  margin: 0;
  font-size: .9688rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(1.5rem, 3.5vw, 2rem) 0 0;
}

.page-faq .faq-figure figcaption {
  margin-top: .75rem;
  padding-left: .875rem;
  border-left: 2px solid var(--gold-soft);
  font-size: .8125rem;
  line-height: 1.7;
  color: var(--faq-muted);
}

/* ---------- 批次目录 ---------- */
.page-faq .faq-archive {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-archive-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .3rem .875rem;
  padding: .9375rem 0;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-archive-row--now {
  background: rgba(201, 162, 39, .1);
  border-left: 3px solid var(--gold);
  padding-left: .875rem;
}

.page-faq .faq-archive-code {
  font-family: var(--mono);
  font-size: .8125rem;
  letter-spacing: .05em;
  color: var(--gold);
  flex: none;
  min-width: 4.75rem;
}

.page-faq .faq-archive-label {
  flex: none;
  min-width: 4.75rem;
  font-size: .9375rem;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-archive-desc {
  flex: 1 1 12rem;
  min-width: 0;
  font-size: .9063rem;
  line-height: 1.7;
  color: var(--faq-muted);
}

.page-faq .faq-archive-note {
  margin: 1rem 0 0;
  font-size: .9063rem;
  line-height: 1.75;
  color: var(--faq-muted);
}

/* ---------- 问答卡片 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 1rem;
  margin-top: clamp(1.5rem, 3.5vw, 2rem);
}

.page-faq .faq-card {
  padding: clamp(1.125rem, 2.8vw, 1.625rem);
  background: var(--faq-card);
  border: 1px solid var(--faq-line-soft);
  border-top: 2px solid var(--ink-2);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-q {
  margin: 0 0 .625rem;
  font-family: var(--serif);
  font-size: clamp(1.0625rem, 2.2vw, 1.25rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-a {
  margin: 0;
  font-size: .9688rem;
  line-height: 1.85;
  color: var(--faq-muted);
}

/* ---------- 折叠细节 ---------- */
.page-faq .faq-fold {
  margin-top: 1rem;
  border: 1px solid var(--faq-line);
  background: var(--paper);
}

.page-faq .faq-fold-summary {
  display: flex;
  align-items: center;
  gap: .625rem;
  padding: .9375rem 1.125rem;
  cursor: pointer;
  list-style: none;
  font-size: .9688rem;
  font-weight: 700;
  color: var(--ink);
}

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

.page-faq .faq-fold-summary::before {
  content: "";
  flex: none;
  width: .5rem;
  height: .5rem;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(-45deg);
  transition: transform var(--dur) var(--ease);
}

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

.page-faq .faq-fold-body {
  padding: 0 1.125rem 1.125rem 2.15rem;
}

.page-faq .faq-fold-body p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 版本对照 ---------- */
.page-faq .faq-version {
  display: grid;
  gap: .75rem;
}

.page-faq .faq-version-card {
  padding: clamp(1.125rem, 2.8vw, 1.5rem);
  background: var(--moon);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--ink-2);
}

.page-faq .faq-version-card--alt {
  background: var(--paper);
  border-top-color: var(--gold);
}

.page-faq .faq-version-tag {
  margin: 0;
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-version-name {
  margin: .5rem 0 .5rem;
  font-family: var(--serif);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-version-desc {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--faq-muted);
}

.page-faq .faq-version-swap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .25rem;
}

.page-faq .faq-version-swap span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  border: 1px solid var(--gold);
  color: var(--gold);
  font-size: .75rem;
  letter-spacing: .08em;
  background: var(--faq-card);
}

@media (min-width: 760px) {
  .page-faq .faq-version {
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: stretch;
  }

  .page-faq .faq-version-swap {
    padding: 0 .25rem;
  }
}

.page-faq .faq-marks {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: .625rem;
}

.page-faq .faq-mark {
  display: flex;
  align-items: flex-start;
  gap: .625rem;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--faq-muted);
}

.page-faq .faq-mark .legend-key {
  flex: none;
  margin-top: .55em;
}

.page-faq .faq-mark strong {
  color: var(--ink);
}

/* ---------- 手机端排查 ---------- */
.page-faq .faq-order {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: .875rem;
}

.page-faq .faq-order-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .875rem;
  padding: clamp(1rem, 2.5vw, 1.25rem);
  background: var(--faq-card);
  border: 1px solid var(--faq-line-soft);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-order-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: none;
  width: 1.875rem;
  height: 1.875rem;
  border-radius: 50%;
  background: var(--ink);
  color: var(--gold-soft);
  font-family: var(--mono);
  font-size: .875rem;
  line-height: 1;
}

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

.page-faq .faq-order-body h3 {
  margin: 0 0 .375rem;
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-order-body p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

/* ---------- 速度 ---------- */
.page-faq .faq-speed {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-speed-cell {
  padding: clamp(1.25rem, 3vw, 1.75rem);
  background: var(--ink-2);
  border-top: 3px solid var(--gold);
  color: var(--moon);
}

.page-faq .faq-speed-cell--cool {
  background: var(--ink);
  border-top-color: var(--blue);
}

.page-faq .faq-speed-label {
  margin: 0;
  font-size: .8125rem;
  letter-spacing: .16em;
  color: var(--on-dark-dim);
}

.page-faq .faq-speed-value {
  display: flex;
  align-items: baseline;
  gap: .3rem;
  margin: .625rem 0 .75rem;
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(2rem, 5vw, 2.875rem);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--gold-soft);
}

.page-faq .faq-speed-unit {
  font-family: var(--sans);
  font-size: .9375rem;
  font-weight: 400;
  color: var(--on-dark-dim);
}

.page-faq .faq-speed-note {
  margin: 0;
  font-size: .9063rem;
  line-height: 1.75;
  color: var(--on-dark);
}

.page-faq .faq-tips {
  list-style: none;
  margin: clamp(1.25rem, 3vw, 1.75rem) 0 0;
  padding: 0;
  display: grid;
  gap: .625rem;
}

.page-faq .faq-tips li {
  position: relative;
  padding-left: 1.5rem;
  font-size: .9375rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

.page-faq .faq-tips li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: .75rem;
  height: 1px;
  background: var(--gold);
}

@media (min-width: 700px) {
  .page-faq .faq-speed {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- 下一步 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 1rem;
}

.page-faq .faq-next-card {
  display: grid;
  gap: .5rem;
  padding: clamp(1.125rem, 3vw, 1.625rem);
  text-decoration: none;
  background: var(--paper);
  border: 1px solid rgba(201, 162, 39, .45);
  border-left: 4px solid var(--gold);
  transition: transform var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}

.page-faq .faq-next-card--cool {
  background: var(--moon);
  border-color: rgba(30, 76, 122, .32);
  border-left-color: var(--blue);
}

.page-faq .faq-next-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 18px 32px -24px rgba(11, 31, 51, .6);
}

.page-faq .faq-next-kicker {
  font-family: var(--mono);
  font-size: .75rem;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-faq .faq-next-card--cool .faq-next-kicker {
  color: var(--blue);
}

.page-faq .faq-next-title {
  font-family: var(--serif);
  font-size: clamp(1.0625rem, 2.2vw, 1.25rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-next-meta {
  font-size: .8438rem;
  color: var(--faq-muted);
}

@media (min-width: 760px) {
  .page-faq .faq-next {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- 联系信息 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(1.5rem, 3.5vw, 2rem);
  padding: clamp(1.25rem, 3vw, 1.875rem);
  background: var(--faq-card);
  border: 1px solid var(--faq-line);
  border-top: 3px solid var(--gold);
}

.page-faq .faq-contact-list {
  margin: 0;
  display: grid;
  gap: .875rem;
}

.page-faq .faq-contact-item {
  display: grid;
  gap: .25rem;
  padding-bottom: .875rem;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-contact-item:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact-item dt {
  font-size: .75rem;
  letter-spacing: .14em;
  color: var(--faq-muted);
}

.page-faq .faq-contact-item dd {
  margin: 0;
  font-size: .9688rem;
  line-height: 1.7;
  color: var(--ink);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact-note {
  margin: 1.25rem 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--faq-line);
  font-size: .875rem;
  line-height: 1.8;
  color: var(--faq-muted);
}

@media (min-width: 760px) {
  .page-faq .faq-contact-list {
    grid-template-columns: 1fr 1fr;
    gap: 1rem 2.5rem;
  }

  .page-faq .faq-contact-item {
    padding-bottom: 0;
    border-bottom: 0;
  }
}

/* ---------- 动效收敛 ---------- */
.page-faq [data-reveal] {
  opacity: 1;
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq [data-reveal] {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity var(--dur) var(--ease),
                transform var(--dur) var(--ease);
  }

  .page-faq [data-reveal].is-in {
    opacity: 1;
    transform: none;
  }
}
</main>