.page-faq {
  --faq-rule: rgba(107, 118, 113, .4);
  --faq-glow: rgba(53, 240, 208, .16);
  background: var(--ink);
  color: var(--warm);
  font-family: var(--sans);
  line-height: 1.75;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq a {
  color: var(--cyan);
}

/* ── 面包屑 ───────────────────────────── */
.page-faq .breadcrumb {
  padding-block: clamp(18px, 3vw, 30px) 0;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--graphite);
}

.page-faq .breadcrumb a {
  color: var(--graphite);
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--line-strong);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--warm);
}

/* ── 首屏 ─────────────────────────────── */
.page-faq .faq-masthead {
  padding-block: clamp(22px, 3.6vw, 40px) clamp(26px, 4vw, 46px);
}

.page-faq .faq-masthead__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-faq .faq-masthead h1 {
  margin: 12px 0 0;
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(29px, 4.4vw, 52px);
  line-height: 1.14;
  letter-spacing: -.01em;
}

.page-faq .faq-masthead__aside .lede {
  margin: 0;
  font-size: clamp(15px, 1.5vw, 17px);
  color: rgba(244, 241, 233, .8);
  max-width: 46ch;
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(26px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  padding: 16px 16px 18px;
  background: var(--carbon);
}

.page-faq .faq-stat__num {
  font-family: var(--mono);
  font-weight: 600;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.1;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-faq .faq-stat__label {
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--graphite);
}

/* ── 两列骨架 ─────────────────────────── */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 40px);
  padding-block: clamp(30px, 5vw, 54px) 0;
  align-items: start;
}

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

/* ── 左侧问题导航 ─────────────────────── */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--cond);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--graphite);
}

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

.page-faq .faq-rail__list a {
  display: block;
  padding: 8px 13px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 14px;
  color: rgba(244, 241, 233, .86);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--cyan);
  border-color: var(--line-strong);
  background: rgba(53, 240, 208, .06);
  outline: none;
}

.page-faq .faq-rail__card {
  margin-top: 24px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(150deg, rgba(20, 69, 59, .92), rgba(18, 20, 23, .92));
  box-shadow: var(--shadow-1);
}

.page-faq .faq-rail__card-title {
  margin: 0 0 6px;
  font-family: var(--cond);
  font-size: 15px;
  letter-spacing: .02em;
  color: var(--warm);
}

.page-faq .faq-rail__card p {
  margin: 0;
  font-size: 14px;
  color: rgba(244, 241, 233, .74);
}

.page-faq .faq-rail__phone {
  display: block;
  margin: 12px 0 14px;
  font-family: var(--mono);
  font-size: 17px;
  color: var(--cyan);
}

.page-faq .faq-rail__card .btn {
  width: 100%;
  justify-content: center;
}

/* ── 章节 ─────────────────────────────── */
.page-faq .faq-section {
  scroll-margin-top: 110px;
  padding-bottom: clamp(26px, 4vw, 42px);
}

.page-faq .faq-section + .faq-section {
  padding-top: clamp(26px, 4vw, 42px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  margin-bottom: clamp(14px, 2.2vw, 22px);
}

.page-faq .faq-section__no {
  grid-row: 1;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--cyan);
}

.page-faq .faq-section__head h2 {
  grid-row: 1;
  margin: 0;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.25;
}

.page-faq .faq-section__head p {
  grid-column: 2;
  margin: 6px 0 0;
  font-size: 15px;
  color: rgba(244, 241, 233, .72);
  max-width: 62ch;
}

/* ── 四步上手 ─────────────────────────── */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
}

.page-faq .faq-step {
  min-width: 0;
  padding: 20px 18px 22px;
  background: var(--carbon);
}

.page-faq .faq-step__no {
  display: block;
  margin-bottom: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--orange);
}

.page-faq .faq-step h3 {
  margin: 0 0 8px;
  font-family: var(--cond);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .02em;
  color: var(--warm);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: rgba(244, 241, 233, .76);
}

/* ── 插图 ─────────────────────────────── */
.page-faq .faq-figure {
  margin: clamp(22px, 3vw, 32px) 0 0;
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  overflow: hidden;
  background: var(--carbon);
  box-shadow: var(--shadow-1);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--cond);
  font-size: 13px;
  letter-spacing: .03em;
  color: var(--graphite);
}

/* ── 折叠问答 ─────────────────────────── */
.page-faq .faq-qa {
  border-top: 1px solid var(--faq-rule);
}

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

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-family: var(--cond);
  font-weight: 600;
  font-size: clamp(16px, 1.7vw, 18px);
  letter-spacing: .015em;
  color: var(--warm);
  transition: color .2s var(--ease);
}

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

.page-faq .qa__q::marker {
  content: "";
}

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

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-faq .qa__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__mark {
  flex: none;
  width: 8px;
  height: 8px;
  margin: 9px 2px 0 auto;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(-45deg);
  transition: transform .26s var(--ease);
}

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

.page-faq .qa__a {
  overflow: hidden;
  padding: 0 0 18px;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 241, 233, .78);
  animation: faq-fade .26s var(--ease) both;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ── 横向操作动线 ─────────────────────── */
.page-faq .faq-flow {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: clamp(22px, 3.4vw, 34px) 0;
  padding: 13px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: linear-gradient(90deg, rgba(53, 240, 208, .1), rgba(255, 106, 43, .07) 58%, rgba(18, 20, 23, .55));
}

.page-faq .faq-flow__tag {
  flex: none;
  padding-right: 12px;
  border-right: 1px solid var(--line-strong);
  font-family: var(--cond);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--orange);
}

.page-faq .faq-flow__steps {
  display: flex;
  align-items: center;
  flex: 1 1 auto;
  min-width: 0;
  margin: 0;
  padding: 2px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-flow__steps::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-flow__steps li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: none;
  white-space: nowrap;
  font-family: var(--cond);
  font-size: 14px;
  letter-spacing: .02em;
  color: var(--warm);
}

.page-faq .faq-flow__steps li::before {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px var(--faq-glow);
}

.page-faq .faq-flow__steps li + li {
  position: relative;
  margin-left: 28px;
}

.page-faq .faq-flow__steps li + li::after {
  content: "";
  position: absolute;
  left: -28px;
  top: 50%;
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, rgba(53, 240, 208, .7), rgba(53, 240, 208, .14));
}

/* ── 提示条 ───────────────────────────── */
.page-faq .faq-note {
  margin: 20px 0 0;
  padding: 13px 16px;
  border-left: 2px solid var(--orange);
  border-radius: 0 var(--r-card) var(--r-card) 0;
  background: rgba(255, 106, 43, .08);
  font-size: 14px;
  color: rgba(244, 241, 233, .86);
}

/* ── 商务合作面板 ─────────────────────── */
.page-faq .faq-panel {
  padding: clamp(18px, 2.6vw, 28px);
  border: 1px solid var(--line);
  border-radius: var(--r-card);
  background: linear-gradient(150deg, rgba(42, 42, 85, .74), rgba(18, 20, 23, .88));
  box-shadow: var(--shadow-1);
}

.page-faq .faq-panel .faq-qa {
  border-top-color: var(--line);
}

.page-faq .faq-panel .qa {
  border-bottom-color: var(--line);
}

.page-faq .faq-panel .qa:last-child {
  border-bottom: 0;
}

.page-faq .faq-panel .qa:last-child .qa__a {
  padding-bottom: 2px;
}

/* ── 中等屏幕 ─────────────────────────── */
@media (min-width: 720px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-stat {
    padding: 18px 18px 20px;
  }

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

  .page-faq .faq-masthead__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: clamp(24px, 4vw, 56px);
    align-items: end;
  }

  .page-faq .faq-masthead__aside .lede {
    padding-bottom: 6px;
  }
}

/* ── 桌面：左栏固定 ───────────────────── */
@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 3.2fr) minmax(0, 8fr);
    gap: clamp(32px, 4.5vw, 72px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 104px;
    max-height: calc(100vh - 132px);
    overflow-y: auto;
  }

  .page-faq .faq-rail__list {
    display: block;
    border-top: 1px solid var(--line);
  }

  .page-faq .faq-rail__list a {
    position: relative;
    padding: 11px 0 11px 16px;
    border: 0;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }

  .page-faq .faq-rail__list a::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 6px;
    margin-top: -3px;
    border-radius: 50%;
    background: transparent;
    box-shadow: inset 0 0 0 1px var(--graphite);
    transition: background .2s var(--ease), box-shadow .2s var(--ease);
  }

  .page-faq .faq-rail__list a:hover::before,
  .page-faq .faq-rail__list a:focus-visible::before {
    background: var(--cyan);
    box-shadow: 0 0 0 3px var(--faq-glow);
  }

  .page-faq .faq-section__head p {
    margin-top: 8px;
  }
}

/* ── 动效降级 ─────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__mark {
    transition: none;
  }

  .page-faq .qa__a p {
    animation: none;
  }

  .page-faq .faq-rail__list a,
  .page-faq .faq-breadcrumb a,
  .page-faq .breadcrumb a {
    transition: none;
  }
}