.page-faq {
  --faq-stick: 104px;
  --faq-line: rgba(16, 20, 28, 0.12);
  --faq-line-soft: rgba(16, 20, 28, 0.07);
  --faq-celadon-soft: rgba(95, 183, 163, 0.14);
  --faq-text-soft: rgba(16, 20, 28, 0.74);
  --faq-radius: 20px;
  background: var(--paper);
  color: var(--ink-black);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 36px) 0 clamp(28px, 4vw, 48px);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 90% at 88% 0%, rgba(30, 58, 110, 0.85) 0%, rgba(11, 27, 58, 0) 62%),
    radial-gradient(80% 70% at 0% 100%, rgba(95, 183, 163, 0.16) 0%, rgba(11, 27, 58, 0) 60%),
    repeating-linear-gradient(0deg, rgba(168, 199, 216, 0.07) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(90deg, rgba(168, 199, 216, 0.07) 0 1px, transparent 1px 56px);
  color: var(--paper);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(242, 181, 68, 0.55), transparent);
}

.page-faq .faq-hero .breadcrumbs {
  margin-bottom: clamp(20px, 3vw, 30px);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
  align-items: end;
}

.page-faq .faq-hero-intro h1 {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-size: clamp(30px, 5.4vw, 58px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 20ch;
}

.page-faq .eyebrow {
  color: var(--celadon);
}

.page-faq .faq-hero-lede {
  margin: 16px 0 0;
  max-width: 56ch;
  font-size: clamp(14.5px, 1.5vw, 16.5px);
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-quick {
  display: grid;
  gap: 10px;
}

.page-faq .faq-quick a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 18px;
  border: 1px solid var(--line-dark-strong);
  border-radius: var(--r-pill);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: border-color 220ms var(--ease), background-color 220ms var(--ease), transform 220ms var(--ease);
}

.page-faq .faq-quick a:hover,
.page-faq .faq-quick a:focus-visible {
  border-color: var(--celadon);
  background: rgba(95, 183, 163, 0.14);
  transform: translateX(2px);
}

.page-faq .faq-quick a .mono {
  color: var(--amber);
  font-size: 13px;
}

/* ---------- 筛选 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  margin-top: clamp(24px, 3.4vw, 38px);
  padding-top: clamp(18px, 2.6vw, 26px);
  border-top: 1px solid var(--line-dark);
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .filter-btn {
  padding: 8px 15px;
  border: 1px solid var(--line-dark-strong);
  border-radius: var(--r-pill);
  background: transparent;
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.5;
  cursor: pointer;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .filter-btn:hover,
.page-faq .filter-btn:focus-visible {
  color: var(--paper);
  border-color: var(--celadon);
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--amber);
  border-color: var(--amber);
  color: var(--ink-900);
  font-weight: 700;
}

.page-faq .faq-filter-meta {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

.page-faq .filter-count {
  color: var(--amber);
  font-weight: 700;
}

/* ---------- 主体 ---------- */
.page-faq .faq-body {
  padding: clamp(26px, 4.4vw, 60px) 0 clamp(46px, 7vw, 92px);
}

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

/* 左栏索引 */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail-inner {
  padding: 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-lg);
  background: rgba(231, 214, 180, 0.55);
}

.page-faq .faq-rail-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--celadon-ink);
}

.page-faq .faq-rail-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .faq-rail-list a {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--faq-line-soft);
  border-radius: var(--r-pill);
  background: rgba(243, 233, 210, 0.85);
  color: var(--ink-800);
  font-size: 13.5px;
  line-height: 1.5;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease), color 200ms var(--ease);
}

.page-faq .faq-rail-list a:hover,
.page-faq .faq-rail-list a:focus-visible {
  border-color: var(--celadon);
  background: var(--faq-celadon-soft);
  color: var(--ink-900);
}

.page-faq .faq-rail-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.06em;
  color: var(--amber-ink);
}

.page-faq .faq-rail-cta {
  display: none;
  margin-top: 18px;
  width: 100%;
  justify-content: center;
}

/* 分组 */
.page-faq .faq-group {
  margin-bottom: clamp(28px, 4vw, 52px);
  min-width: 0;
}

.page-faq .faq-group-head {
  display: grid;
  gap: 8px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 6px;
}

.page-faq .faq-group-num {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--celadon-ink);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
  color: var(--ink-900);
}

.page-faq .faq-group-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-text-soft);
}

/* 折叠问答 */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line-soft);
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 2px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ink-900);
  transition: color 200ms var(--ease);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--celadon-ink);
}

.page-faq .faq-q-icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 1px;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  background: rgba(231, 214, 180, 0.7);
  transition: transform 220ms var(--ease), background-color 220ms var(--ease), border-color 220ms var(--ease);
}

.page-faq .faq-q-icon::before,
.page-faq .faq-q-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 10px;
  height: 1.5px;
  background: var(--ink-800);
  transform: translate(-50%, -50%);
}

.page-faq .faq-q-icon::after {
  transform: translate(-50%, -50%) rotate(90deg);
}

.page-faq .faq-item[open] .faq-q-icon {
  transform: rotate(45deg);
  background: var(--amber);
  border-color: var(--amber);
}

.page-faq .faq-item[open] .faq-q-icon::before,
.page-faq .faq-item[open] .faq-q-icon::after {
  background: var(--ink-900);
}

.page-faq .faq-a {
  padding: 0 30px 16px 2px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-text-soft);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a a {
  color: var(--celadon-ink);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-a .link-arrow {
  text-decoration: none;
  color: var(--celadon-ink);
  font-weight: 600;
}

/* 三步流程 */
.page-faq .faq-steps {
  display: grid;
  gap: 10px;
  margin: 18px 0 14px;
}

.page-faq .faq-step {
  padding: 15px 16px;
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--ink-800), var(--ink-900));
  color: var(--paper);
}

.page-faq .faq-step-num {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-faq .faq-step h3 {
  margin: 6px 0 4px;
  font-size: 15.5px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-path {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  margin: 0 0 18px;
  padding: 11px 14px;
  border: 1px dashed rgba(95, 183, 163, 0.55);
  border-radius: var(--r-md);
  background: var(--faq-celadon-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--ink-800);
}

/* 复制按钮 */
.page-faq .copy-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 13px;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-pill);
  background: rgba(243, 233, 210, 0.9);
  color: var(--ink-800);
  font-family: var(--font-sans);
  font-size: 12.5px;
  line-height: 1.5;
  cursor: pointer;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .copy-chip:hover,
.page-faq .copy-chip:focus-visible {
  border-color: var(--celadon);
  background: rgba(95, 183, 163, 0.22);
}

.page-faq .copy-chip__hint {
  font-size: 12px;
  color: var(--celadon-ink);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 18px 0 20px;
}

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

.page-faq .media-frame__caption {
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--faq-text-soft);
}

/* 移动端章节 */
.page-faq .faq-mobile-split {
  display: grid;
  gap: 14px;
  margin-top: 8px;
}

.page-faq .faq-mobile-list {
  min-width: 0;
}

/* 联系渠道 */
.page-faq .faq-group--contact {
  margin-top: clamp(10px, 2vw, 20px);
}

.page-faq .faq-channels {
  display: grid;
  gap: 12px;
  margin-top: 16px;
}

.page-faq .faq-channel {
  display: grid;
  gap: 8px;
  justify-items: start;
  padding: 18px;
  border-radius: var(--r-md);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-900));
  color: var(--paper);
}

.page-faq .faq-channel-key {
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--celadon);
}

.page-faq .faq-channel-value {
  font-family: var(--font-mono);
  font-size: clamp(16px, 2.1vw, 22px);
  line-height: 1.4;
  letter-spacing: 0.01em;
  word-break: break-word;
  color: var(--paper);
}

.page-faq .faq-channel-value--addr {
  font-family: var(--font-sans);
  font-weight: 600;
  line-height: 1.6;
}

.page-faq .faq-channel-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-channel--paper {
  background: rgba(231, 214, 180, 0.62);
  color: var(--ink-black);
}

.page-faq .faq-channel--paper .faq-channel-key {
  color: var(--amber-ink);
}

.page-faq .faq-channel--paper .faq-channel-value {
  color: var(--ink-900);
}

.page-faq .faq-channel--paper .faq-channel-note {
  color: var(--faq-text-soft);
}

.page-faq .faq-channel--paper .link-arrow {
  color: var(--celadon-ink);
  font-size: 13.5px;
  font-weight: 600;
}

/* 下一步 */
.page-faq .faq-next {
  margin-top: clamp(14px, 2.4vw, 26px);
  padding: clamp(20px, 3.4vw, 34px);
  border-radius: var(--r-lg);
  border: 1px solid var(--line-dark-strong);
  background-color: var(--ink-900);
  background-image: radial-gradient(110% 100% at 100% 0%, rgba(95, 183, 163, 0.22) 0%, rgba(11, 27, 58, 0) 60%);
  color: var(--paper);
}

.page-faq .faq-next h2 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(20px, 2.8vw, 28px);
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--paper);
}

.page-faq .faq-next p {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-next-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 18px;
}

.page-faq .faq-btn-light {
  border-color: var(--line-dark-strong);
  color: var(--paper);
}

.page-faq .faq-next-link {
  color: var(--celadon);
  font-size: 13.5px;
}

/* 筛选可见性兜底 */
.page-faq [data-filter-item][hidden],
.page-faq [data-filter-item].is-hidden {
  display: none;
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-rail-inner {
    position: sticky;
    top: var(--faq-stick);
  }

  .page-faq .faq-rail-list {
    display: grid;
    gap: 4px;
    overflow: visible;
  }

  .page-faq .faq-rail-list a {
    padding: 9px 12px;
    border-color: transparent;
    border-radius: var(--r-sm);
    background: transparent;
    white-space: normal;
    font-size: 14px;
  }

  .page-faq .faq-rail-cta {
    display: inline-flex;
  }

  .page-faq .faq-mobile-split {
    grid-template-columns: minmax(240px, 300px) minmax(0, 1fr);
    align-items: start;
    gap: 24px;
  }

  .page-faq .faq-mobile-split .faq-figure {
    margin-top: 6px;
  }

  .page-faq .faq-content {
    padding-left: clamp(8px, 1.4vw, 20px);
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-a {
    padding-right: 56px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-quick a,
  .page-faq .filter-btn,
  .page-faq .faq-q-icon,
  .page-faq .copy-chip,
  .page-faq .faq-rail-list a,
  .page-faq .faq-item > summary {
    transition: none;
  }

  .page-faq .faq-quick a:hover,
  .page-faq .faq-quick a:focus-visible {
    transform: none;
  }
}
<<<END>>>