.page-faq {
  --faq-track-w: 240px;
  --faq-gap: 56px;
  --faq-sticky-offset: 128px;
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 52px;
  background: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -76px;
  right: -14%;
  width: 64%;
  height: 230%;
  background: linear-gradient(158deg, var(--teal) 0%, var(--teal-deep) 78%);
  transform: skewX(-13deg);
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 5px;
  background: repeating-linear-gradient(90deg, var(--orange) 0 14px, transparent 14px 28px);
  pointer-events: none;
}

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

.page-faq .faq-hero .breadcrumb {
  margin-bottom: 26px;
}

.page-faq .faq-hero-copy {
  max-width: 620px;
}

.page-faq .faq-kicker {
  display: inline-block;
  margin: 0 0 16px;
  padding: 5px 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--teal);
  background: var(--sand);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--f-display);
  font-size: clamp(30px, 5.4vw, 54px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero-accent {
  color: var(--teal);
  box-shadow: inset 0 -0.16em 0 var(--orange-soft);
}

.page-faq .faq-lede {
  margin: 0 0 22px;
  max-width: 560px;
  font-size: 17px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero-links a {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  font-size: 14px;
  font-weight: 700;
  color: var(--teal);
  text-decoration: none;
  background: transparent;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-hero-links a:hover,
.page-faq .faq-hero-links a:focus-visible {
  color: var(--orange);
  border-color: var(--orange);
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding: 32px 0 64px;
}

/* ---------- 左侧步骤轨道 ---------- */
.page-faq .faq-track-title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-track-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-track-list li {
  flex: 0 0 auto;
}

.page-faq .faq-track-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 700;
  color: var(--muted);
  text-decoration: none;
  white-space: nowrap;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-track-num {
  font-family: var(--f-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--steel);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-track-list a:hover,
.page-faq .faq-track-list a:focus-visible {
  color: var(--teal);
  border-color: var(--line-strong);
}

.page-faq .faq-track-list a[aria-current="true"] {
  color: var(--teal);
  background: var(--sand);
  border-color: var(--orange);
}

.page-faq .faq-track-list a[aria-current="true"] .faq-track-num {
  color: var(--orange);
}

/* ---------- 章节 ---------- */
.page-faq .faq-step {
  scroll-margin-top: 116px;
  padding: 0 0 40px;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-step-tag {
  display: inline-block;
  margin: 0 0 12px;
  padding: 4px 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--teal);
  background: var(--sand);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-step h2 {
  margin: 0 0 12px;
  font-family: var(--f-display);
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--teal);
}

.page-faq .faq-step-lede {
  margin: 0 0 22px;
  max-width: 640px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
  padding: 8px;
  background: var(--sand);
  border: 1px solid var(--line-strong);
}

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

.page-faq .faq-figure-cap {
  margin: 10px 2px 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-figure--timer {
  max-width: 520px;
}

/* ---------- 三条路径 ---------- */
.page-faq .faq-paths {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqpath;
  display: grid;
  gap: 12px;
}

.page-faq .faq-paths li {
  counter-increment: faqpath;
  position: relative;
  padding: 18px 18px 18px 62px;
  background: var(--sand);
  border-left: 4px solid var(--teal);
}

.page-faq .faq-paths li::before {
  content: counter(faqpath, decimal);
  position: absolute;
  left: 18px;
  top: 16px;
  font-family: var(--f-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-paths h3 {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--teal);
}

.page-faq .faq-paths p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 四种检索 ---------- */
.page-faq .faq-dims {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-dim {
  padding: 18px;
  background: var(--sand);
  border: 1px solid var(--line-strong);
  border-top: 3px solid var(--aqua);
}

.page-faq .faq-dim h3 {
  margin: 0 0 4px;
  font-family: var(--f-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--teal);
}

.page-faq .faq-dim-use {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.page-faq .faq-dim p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-faq .faq-note {
  margin: 18px 0 0;
  padding: 14px 16px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--teal);
  background: var(--paper);
  border-left: 3px solid var(--aqua);
}

.page-faq .faq-note a {
  color: var(--teal);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-color: var(--orange-soft);
  text-underline-offset: 3px;
}

.page-faq .faq-note a:hover,
.page-faq .faq-note a:focus-visible {
  color: var(--orange);
}

/* ---------- PC 端功能 ---------- */
.page-faq .faq-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.page-faq .faq-feature {
  padding: 20px;
  background: var(--teal);
  color: var(--paper);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-feature-kicker {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--orange-soft);
}

.page-faq .faq-feature h3 {
  margin: 0 0 8px;
  font-family: var(--f-display);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--paper);
}

.page-faq .faq-feature p:last-child {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(248, 246, 240, 0.86);
}

/* ---------- 时间线 ---------- */
.page-faq .faq-timeline {
  position: relative;
  margin: 0;
  padding: 0 0 0 28px;
  list-style: none;
}

.page-faq .faq-timeline::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(180deg, var(--orange) 0%, var(--aqua) 60%, var(--teal) 100%);
}

.page-faq .faq-timeline li {
  position: relative;
  padding: 0 0 22px;
}

.page-faq .faq-timeline li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-timeline li::before {
  content: "";
  position: absolute;
  left: -28px;
  top: 5px;
  width: 14px;
  height: 14px;
  box-sizing: border-box;
  background: var(--paper);
  border: 3px solid var(--orange);
  border-radius: 50%;
}

.page-faq .faq-timeline h3 {
  margin: 0 0 6px;
  font-family: var(--f-mono);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--teal);
}

.page-faq .faq-timeline p {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

/* ---------- 常见问题手风琴 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
}

.page-faq .faq-acc {
  scroll-margin-top: 116px;
  background: var(--paper);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  transition: border-color 0.2s var(--ease);
}

.page-faq .faq-acc[open] {
  border-color: var(--orange);
}

.page-faq .faq-acc summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--teal);
  transition: background 0.2s var(--ease);
}

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

.page-faq .faq-acc summary:hover {
  background: var(--sand);
}

.page-faq .faq-acc summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: -2px;
}

.page-faq .faq-acc[open] summary {
  background: var(--sand);
}

.page-faq .faq-acc-icon {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

.page-faq .faq-acc-icon::before,
.page-faq .faq-acc-icon::after {
  content: "";
  position: absolute;
  background: var(--orange);
  transition: transform 0.22s var(--ease);
}

.page-faq .faq-acc-icon::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 2px;
}

.page-faq .faq-acc-icon::after {
  left: 8px;
  top: 0;
  width: 2px;
  height: 18px;
}

.page-faq .faq-acc[open] .faq-acc-icon::after {
  transform: scaleY(0);
}

.page-faq .faq-acc-body {
  padding: 14px 18px 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  border-top: 1px solid var(--line);
}

.page-faq .faq-acc-body p {
  margin: 0;
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  background: var(--teal-deep);
  color: var(--paper);
  border-left: 4px solid var(--orange);
}

.page-faq .faq-contact-main,
.page-faq .faq-contact-side {
  padding: 22px;
}

.page-faq .faq-contact-side {
  border-top: 1px solid rgba(248, 246, 240, 0.18);
}

.page-faq .faq-contact-label {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--orange-soft);
}

.page-faq .faq-contact-value {
  margin: 0 0 10px;
  font-family: var(--f-mono);
  font-size: clamp(18px, 3vw, 24px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: 0.01em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact-value a {
  color: inherit;
  text-decoration: none;
  border-bottom: 2px solid var(--orange);
}

.page-faq .faq-contact-value a:hover,
.page-faq .faq-contact-value a:focus-visible {
  color: var(--orange-soft);
}

.page-faq .faq-contact-desc {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(248, 246, 240, 0.84);
}

.page-faq .faq-contact-side .faq-contact-desc {
  margin-bottom: 16px;
}

.page-faq .faq-copy {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 18px;
  font-family: var(--f-body);
  font-size: 14px;
  font-weight: 700;
  color: #0b1a19;
  background: var(--orange);
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.2s var(--ease);
}

.page-faq .faq-copy:hover,
.page-faq .faq-copy:focus-visible {
  background: var(--orange-soft);
}

.page-faq .faq-copy[data-copied] {
  background: var(--aqua);
  color: var(--paper);
}

/* ---------- 640px 以上 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-dims,
  .page-faq .faq-features {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-contact {
    grid-template-columns: 1.35fr 1fr;
  }

  .page-faq .faq-contact-side {
    border-top: 0;
    border-left: 1px solid rgba(248, 246, 240, 0.18);
  }
}

/* ---------- 900px 以上：左侧轨道固定 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 34px 0 62px;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-track-w) minmax(0, 1fr);
    gap: var(--faq-gap);
    padding: 52px 0 92px;
  }

  .page-faq .faq-track {
    position: sticky;
    top: var(--faq-sticky-offset);
    align-self: start;
  }

  .page-faq .faq-track-list {
    display: block;
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-track-list li {
    border-left: 1px solid var(--line-strong);
  }

  .page-faq .faq-track-list a {
    display: flex;
    gap: 12px;
    padding: 14px 0 14px 14px;
    margin-left: -1px;
    font-size: 14px;
    white-space: normal;
    background: transparent;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
  }

  .page-faq .faq-track-num {
    font-size: 20px;
    line-height: 1.15;
  }

  .page-faq .faq-track-list a[aria-current="true"] {
    background: transparent;
    border-left-color: var(--orange);
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero-links a,
  .page-faq .faq-track-list a,
  .page-faq .faq-acc,
  .page-faq .faq-acc summary,
  .page-faq .faq-acc-icon::before,
  .page-faq .faq-acc-icon::after,
  .page-faq .faq-copy {
    transition: none;
  }
}

/* ---------- 窄屏收尾：斜切块退为底边条 ---------- */
@media (max-width: 859px) {
  .page-faq .faq-hero::before {
    top: auto;
    right: 0;
    bottom: 0;
    left: 0;
    width: auto;
    height: 9px;
    background: var(--teal);
    transform: none;
  }

  .page-faq .faq-hero::after {
    display: none;
  }
}
<<<END>>>