.page-faq {
  --faq-rail-w: 232px;
  background: var(--paper);
  color: var(--ink);
  padding-bottom: var(--sp-7);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: var(--sp-4) 0 0;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--ink-soft);
}
.page-faq .breadcrumb a {
  color: var(--moss);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.page-faq .breadcrumb a:hover {
  color: var(--orange-act);
  border-bottom-color: var(--orange);
}
.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: var(--line);
}
.page-faq .breadcrumb__current {
  color: var(--ink);
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: var(--sp-5) 0 var(--sp-6);
  overflow: hidden;
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: 6%;
  right: 0;
  width: 44%;
  height: 76%;
  background: repeating-linear-gradient(to bottom, var(--moss-mist) 0 4px, transparent 4px 18px);
  opacity: .68;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to left, #000 10%, transparent 96%);
  mask-image: linear-gradient(to left, #000 10%, transparent 96%);
}
.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}
.page-faq .faq-hero .eyebrow {
  margin: 0 0 var(--sp-4);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--moss);
}
.page-faq .faq-hero h1 {
  margin: 0 0 var(--sp-4);
  max-width: 19ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.02em;
}
.page-faq .faq-hero .lede {
  max-width: 62ch;
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 快捷联系条 ---------- */
.page-faq .faq-quick {
  display: grid;
  gap: 1px;
  max-width: 760px;
  margin-top: var(--sp-5);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--line);
  overflow: hidden;
}
.page-faq .faq-quick__item {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2) var(--sp-3);
  padding: var(--sp-4);
  background: var(--moss-mist);
}
.page-faq .faq-quick__label {
  flex: none;
  font-family: var(--font-nav);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--moss-deep);
}
.page-faq .faq-quick__val {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  word-break: break-all;
  color: var(--moss-deep);
}
.page-faq .copy-btn {
  flex: none;
  padding: 5px 14px;
  border: 1px solid var(--moss);
  border-radius: var(--r-cap);
  background: transparent;
  color: var(--moss-deep);
  font-family: var(--font-nav);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 160ms var(--ease), color 160ms var(--ease), transform 160ms var(--ease);
}
.page-faq .copy-btn:hover {
  border-color: var(--orange);
  color: var(--orange-act);
  transform: translateY(-2px);
}
.page-faq .copy-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 页内筛选 ---------- */
.page-faq .faq-search {
  margin-top: var(--sp-5);
}
.page-faq .faq-search__label {
  display: block;
  margin-bottom: var(--sp-2);
  font-family: var(--font-nav);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
}
.page-faq .faq-search__input {
  display: block;
  width: 100%;
  max-width: 440px;
  padding: 12px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-cap);
  background: #fff;
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 14px;
  transition: border-color 160ms var(--ease);
}
.page-faq .faq-search__input::placeholder {
  color: var(--ink-soft);
  opacity: .7;
}
.page-faq .faq-search__input:focus {
  border-color: var(--moss);
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-search__hint {
  margin: var(--sp-2) 0 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--sp-5);
  padding-bottom: var(--sp-7);
}

/* ---------- 排查路径 ---------- */
.page-faq .faq-rail__inner {
  border-radius: var(--r-md);
}
.page-faq .faq-rail__title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--ink-soft);
}
.page-faq .faq-rail__list {
  display: flex;
  gap: var(--sp-2);
  margin: 0;
  padding: 0 0 var(--sp-2);
  list-style: none;
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: thin;
}
.page-faq .faq-rail__list li {
  flex: none;
}
.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-cap);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-nav);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 160ms var(--ease), transform 160ms var(--ease), background-color 160ms var(--ease);
}
.page-faq .faq-rail__link:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}
.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
}
.page-faq .faq-rail__link[aria-current="true"] {
  background: var(--moss);
  border-color: var(--moss);
  color: #fff;
}
.page-faq .faq-rail__link[aria-current="true"] .faq-rail__num {
  color: var(--moss-mist);
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  margin-top: var(--sp-6);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--line);
}
.page-faq .faq-group:first-child {
  margin-top: 0;
  padding-top: 0;
  border-top: 0;
}
.page-faq .faq-group__title {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 var(--sp-3);
  padding-left: 16px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 3.6vw, 25px);
  line-height: 1.32;
  letter-spacing: -0.01em;
}
.page-faq .faq-group__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .22em;
  bottom: .22em;
  width: 4px;
  border-radius: var(--r-cap);
  background: var(--moss);
}
.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: .1em;
  color: var(--cyan);
}
.page-faq .faq-group__lead {
  max-width: 62ch;
  margin: 0 0 var(--sp-4);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

/* ---------- 三分类卡片 ---------- */
.page-faq .triage {
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-5);
}
.page-faq .triage__card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: var(--sp-5) var(--sp-4) var(--sp-4);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: #fff;
  transition: border-color 160ms var(--ease), transform 160ms var(--ease);
}
.page-faq .triage__card::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--sp-4);
  right: var(--sp-4);
  height: 3px;
  border-radius: 0 0 3px 3px;
  background: var(--moss-mist);
}
.page-faq .triage__card:hover {
  border-color: var(--orange);
  transform: translateY(-2px);
}
.page-faq .triage__num {
  display: block;
  margin-bottom: var(--sp-3);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
}
.page-faq .triage__title {
  margin: 0 0 var(--sp-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.4;
}
.page-faq .triage__text {
  margin: 0 0 var(--sp-4);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .triage__link {
  margin-top: auto;
  align-self: flex-start;
  font-family: var(--font-nav);
  font-size: 14px;
  font-weight: 700;
  color: var(--orange-act);
  text-decoration: none;
  border-bottom: 2px solid var(--orange-soft);
  transition: border-color 160ms var(--ease);
}
.page-faq .triage__link:hover {
  border-bottom-color: var(--orange-act);
}
.page-faq .triage__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--line);
}
.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-item + .faq-item:nth-child(4n) {
  border-bottom-color: var(--moss-mist);
  box-shadow: 0 1px 0 var(--moss-mist);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color 160ms var(--ease);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q::before {
  content: "+";
  flex: none;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--line);
  border-radius: var(--r-cap);
  color: var(--moss);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  transition: background-color 160ms var(--ease), border-color 160ms var(--ease), color 160ms var(--ease);
}
.page-faq .faq-item__q:hover {
  color: var(--orange-act);
}
.page-faq .faq-item__q:hover::before {
  border-color: var(--orange);
  color: var(--orange-act);
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}
.page-faq .faq-item[open] > .faq-item__q::before {
  content: "–";
  background: var(--moss);
  border-color: var(--moss);
  color: #fff;
}
.page-faq .faq-item__a {
  max-width: 68ch;
  padding: 0 4px 20px 38px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}
.page-faq .faq-item__a p {
  margin: 0 0 10px;
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a a {
  color: var(--orange-act);
  text-decoration: none;
  border-bottom: 1px solid var(--orange-soft);
}
.page-faq .faq-item__a a:hover {
  border-bottom-color: var(--orange-act);
}
.page-faq .faq-path {
  display: inline-block;
  padding: 3px 10px;
  border-radius: var(--r-sm);
  background: var(--moss-mist);
  color: var(--moss-deep);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
}
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.page-faq .faq-tags .badge {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: var(--sp-5) 0 0;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--moss-mist);
  object-fit: cover;
}
.page-faq .faq-figure figcaption {
  margin-top: var(--sp-3);
  max-width: 64ch;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-quick {
    grid-template-columns: 1fr 1fr;
  }
  .page-faq .triage {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero {
    padding: var(--sp-6) 0 var(--sp-7);
  }
  .page-faq .faq-hero h1 {
    max-width: 22ch;
  }
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) var(--faq-rail-w);
    gap: 64px;
  }
  .page-faq .faq-main {
    grid-column: 1;
    grid-row: 1;
  }
  .page-faq .faq-rail {
    grid-column: 2;
    grid-row: 1;
  }
  .page-faq .faq-rail__inner {
    position: sticky;
    top: calc(var(--top-h) + 20px);
    padding: var(--sp-4);
    border: 1px solid var(--line);
    border-radius: var(--r-lg);
    background: #fff;
  }
  .page-faq .faq-rail__title {
    margin-bottom: var(--sp-3);
  }
  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    padding: 0;
    overflow: visible;
  }
  .page-faq .faq-rail__list li {
    flex: 1 1 auto;
  }
  .page-faq .faq-rail__link {
    border-color: transparent;
    border-radius: var(--r-sm);
    background: transparent;
    white-space: normal;
    line-height: 1.5;
  }
  .page-faq .faq-rail__link[aria-current="true"] {
    background: var(--moss-mist);
    border-color: transparent;
    color: var(--moss-deep);
  }
  .page-faq .faq-rail__link[aria-current="true"] .faq-rail__num {
    color: var(--moss);
  }
  .page-faq .triage {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-group__title {
    padding-left: 20px;
  }
  .page-faq .faq-item__q {
    font-size: 17px;
    padding: 20px 6px;
  }
  .page-faq .faq-item__a {
    padding: 0 6px 24px 40px;
  }
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] > .faq-item__a {
    animation: faq-reveal 240ms var(--ease) both;
  }
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] > .faq-item__a {
    animation: none;
  }
  .page-faq .triage__card:hover,
  .page-faq .copy-btn:hover,
  .page-faq .faq-rail__link:hover {
    transform: none;
  }
}
<<<END>>>