.page-faq {
  --faq-rail: 236px;
  --faq-gap: clamp(20px, 3vw, 40px);
  background-color: var(--ink-900);
  color: var(--text);
  font-family: var(--font-body);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq .breadcrumbs {
  padding-top: clamp(16px, 2.4vw, 26px);
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--mist);
  letter-spacing: -0.01em;
}

.page-faq a {
  color: inherit;
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding: clamp(22px, 3.4vw, 40px) 0 clamp(30px, 4.6vw, 54px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: min(220px, 40%);
  height: 2px;
  background: linear-gradient(90deg, var(--red), transparent);
}

.page-faq .faq-hero h1 {
  font-size: clamp(1.9rem, 4.8vw, 3.4rem);
  line-height: 1.06;
  margin: 0.55rem 0 1rem;
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  max-width: 60ch;
  margin: 0;
  color: var(--text-soft);
  font-size: clamp(0.96rem, 1.1vw, 1.04rem);
  line-height: 1.85;
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: clamp(20px, 2.6vw, 30px);
}

.page-faq .faq-hero__acts .btn {
  text-decoration: none;
}

.page-faq .faq-jump {
  color: var(--cyan);
  font-size: 0.92rem;
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 214, 196, 0.4);
  padding-bottom: 2px;
  transition: border-color 0.2s, color 0.2s;
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--mist);
}

.page-faq .faq-hero__panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line);
  background: var(--line);
  align-self: start;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--cut)), calc(100% - var(--cut)) 100%, 0 100%);
}

.page-faq .faq-metric {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 16px 20px;
  background: linear-gradient(120deg, var(--ink-800), var(--ink-900));
}

.page-faq .faq-metric .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.page-faq .faq-metric__label {
  font-size: 0.84rem;
  letter-spacing: 0.06em;
  color: var(--text-soft);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 44px);
  padding-top: clamp(30px, 4.6vw, 54px);
}

.page-faq .faq-rail {
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 42, 58, 0.92), rgba(11, 27, 43, 0.7));
  padding: 16px 16px 14px;
  align-self: start;
}

.page-faq .faq-rail .eyebrow {
  margin: 0 0 10px;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-faq .faq-rail__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 6px;
  color: var(--text-soft);
  font-size: 0.9rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.page-faq .faq-rail__list a:hover,
.page-faq .faq-rail__list a:focus-visible {
  color: var(--mist);
  border-left-color: var(--red);
  background: rgba(226, 61, 61, 0.09);
}

.page-faq .faq-rail__list a span {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--moss);
  flex: none;
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--text-mute);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-sec {
  scroll-margin-top: calc(var(--head-h) + 24px);
}

.page-faq .faq-sec + .faq-sec {
  margin-top: clamp(46px, 6.5vw, 84px);
  padding-top: clamp(34px, 4.5vw, 56px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-sec h2 {
  font-size: clamp(1.4rem, 2.5vw, 2.05rem);
  line-height: 1.14;
  margin: 0.55rem 0 0.85rem;
}

.page-faq .faq-sec > p {
  max-width: 70ch;
  margin: 0;
  color: var(--text-soft);
  font-size: 0.97rem;
  line-height: 1.85;
}

.page-faq .faq-inline-link {
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--text-mute);
}

.page-faq .faq-inline-link a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(40, 214, 196, 0.4);
}

.page-faq .faq-inline-link a:hover,
.page-faq .faq-inline-link a:focus-visible {
  border-bottom-color: var(--mist);
  color: var(--mist);
}

/* ---------- 路径卡片 ---------- */
.page-faq .faq-paths {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-path a {
  position: relative;
  display: block;
  height: 100%;
  padding: 20px 18px 22px;
  background: var(--ink-800);
  text-decoration: none;
  transition: background 0.2s;
}

.page-faq .faq-path a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 0;
  height: 2px;
  background: var(--red);
  transition: width 0.32s ease;
}

.page-faq .faq-path a:hover,
.page-faq .faq-path a:focus-visible {
  background: var(--ink-750);
}

.page-faq .faq-path a:hover::before,
.page-faq .faq-path a:focus-visible::before {
  width: 100%;
}

.page-faq .faq-path__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--moss);
  margin-bottom: 8px;
}

.page-faq .faq-path h3 {
  font-size: 1.02rem;
  margin: 0 0 8px;
  color: var(--mist);
}

.page-faq .faq-path p {
  margin: 0 0 14px;
  font-size: 0.88rem;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: clamp(24px, 3.6vw, 40px) 0 0;
  border: 1px solid var(--line);
  background: linear-gradient(140deg, var(--ink-800), var(--ink-950));
  overflow: hidden;
}

.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-figure img {
  width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-faq .faq-figure--inset img {
  aspect-ratio: 20 / 13;
}

.page-faq .faq-figure figcaption {
  position: relative;
  z-index: 1;
  padding: 12px 16px;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  color: var(--text-mute);
  border-top: 1px solid var(--line-soft);
  background: rgba(6, 13, 20, 0.72);
}

/* ---------- 步骤列表 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-steps li:first-child {
  padding-top: 4px;
}

.page-faq .faq-step__num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--ink-950);
  background: var(--cyan);
  flex: none;
}

.page-faq .faq-steps h3 {
  font-size: 0.99rem;
  margin: 4px 0 6px;
  color: var(--mist);
}

.page-faq .faq-steps p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.82;
  color: var(--text-soft);
}

/* ---------- 核对清单 ---------- */
.page-faq .faq-checklist {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-checklist li {
  background: var(--ink-900);
  padding: 18px 18px 20px;
  border-left: 2px solid transparent;
  transition: border-color 0.2s, background 0.2s;
}

.page-faq .faq-checklist li:hover {
  border-left-color: var(--cyan);
  background: rgba(16, 42, 58, 0.72);
}

.page-faq .faq-checklist h3 {
  font-size: 0.95rem;
  margin: 0 0 6px;
  color: var(--mist);
}

.page-faq .faq-checklist p {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--text-soft);
}

/* ---------- 版本变化 ---------- */
.page-faq .faq-shift {
  list-style: none;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  border: 1px solid var(--line);
}

.page-faq .faq-shift li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 13px 16px;
  transition: background 0.2s;
}

.page-faq .faq-shift li:nth-child(odd) {
  background: rgba(16, 42, 58, 0.55);
}

.page-faq .faq-shift li:hover {
  background: rgba(20, 50, 71, 0.9);
}

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

.page-faq .faq-shift__k {
  flex: 1 1 160px;
  min-width: 0;
  font-size: 0.92rem;
  color: var(--text);
}

.page-faq .faq-shift__old {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  color: var(--text-mute);
}

.page-faq .faq-shift__arrow {
  color: var(--clay);
  font-size: 0.84rem;
}

.page-faq .faq-shift__new {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--cyan);
}

/* ---------- 问答 ---------- */
.page-faq .faq-group {
  margin-top: clamp(24px, 3.4vw, 34px);
}

.page-faq .faq-group > h3 {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  color: var(--moss);
  margin: 0 0 10px;
  padding-left: 10px;
  border-left: 2px solid var(--moss);
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-left: 3px solid var(--line-strong);
  background: linear-gradient(135deg, rgba(16, 42, 58, 0.86), rgba(11, 27, 43, 0.86));
  transition: border-color 0.2s, background 0.2s;
}

.page-faq .faq-item + .faq-item {
  margin-top: 8px;
}

.page-faq .faq-item:hover {
  border-left-color: var(--clay);
}

.page-faq .faq-item[open] {
  border-left-color: var(--red);
  background: linear-gradient(135deg, rgba(20, 50, 71, 0.95), rgba(11, 27, 43, 0.92));
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--text);
  font-size: 0.95rem;
  line-height: 1.6;
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1;
  color: var(--stone);
  transition: color 0.2s, transform 0.24s;
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--red);
}

.page-faq .faq-item summary:hover::after,
.page-faq .faq-item summary:focus-visible::after {
  color: var(--cyan);
}

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

.page-faq .faq-item__id {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--moss);
}

.page-faq .faq-item[open] .faq-item__id {
  color: var(--red);
}

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

.page-faq .faq-item__body {
  padding: 0 16px 16px 16px;
  color: var(--text-soft);
  font-size: 0.91rem;
  line-height: 1.84;
}

.page-faq .faq-item__body p {
  margin: 0;
}

.page-faq .faq-item__body p + p {
  margin-top: 10px;
}

/* ---------- 反馈 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-contact__card {
  background: var(--ink-800);
  padding: 20px 18px 22px;
}

.page-faq .faq-contact__card h3 {
  font-size: 0.95rem;
  margin: 0 0 10px;
  color: var(--mist);
}

.page-faq .faq-contact__card p {
  margin: 0;
  font-size: 0.89rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .faq-contact__val {
  font-family: var(--font-mono);
  font-size: 0.9rem !important;
  color: var(--cyan) !important;
  word-break: break-word;
  margin-bottom: 8px !important;
}

.page-faq .faq-contact__link {
  display: inline-block;
  margin-top: 12px;
  font-size: 0.89rem;
  color: var(--red);
  text-decoration: none;
  border-bottom: 1px solid rgba(226, 61, 61, 0.45);
}

.page-faq .faq-contact__link:hover,
.page-faq .faq-contact__link:focus-visible {
  color: var(--mist);
  border-bottom-color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-hero__panel {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-metric {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 18px;
  }

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

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

@media (min-width: 860px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    align-items: end;
  }

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

  .page-faq .faq-metric {
    flex-direction: row;
    align-items: baseline;
    gap: 12px;
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(32px, 4.6vw, 60px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--head-h) + 20px);
  }

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

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-path a::before,
  .page-faq .faq-item summary::after,
  .page-faq .faq-rail__list a {
    transition: none;
  }
}
<<<END>>>