.page-faq {
  --faq-rail-w: 168px;
  --faq-rail-line: rgba(90, 107, 122, .3);
  --faq-card-line: rgba(90, 107, 122, .18);
  display: block;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + 40px) 0 48px;
  background-color: var(--paper);
  background-image:
    radial-gradient(circle at 86% 10%, rgba(143, 189, 180, .30), transparent 58%),
    radial-gradient(circle at 4% 92%, rgba(217, 162, 74, .16), transparent 52%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 6px;
  background: linear-gradient(90deg, var(--deep) 0%, var(--deep-2) 42%, var(--gold) 100%);
}

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

.page-faq .faq-hero-grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero-lead .eyebrow {
  margin: 0 0 12px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(28px, 7vw, 40px);
  line-height: 1.32;
  letter-spacing: -.01em;
  color: var(--deep);
  margin: 0 0 18px;
  max-width: 20ch;
}

.page-faq .faq-hero-lead .lede {
  margin: 0;
  max-width: 46ch;
}

.page-faq .faq-hero-stats {
  margin: 0;
  padding-left: 18px;
  border-left: 3px solid var(--gold);
  display: grid;
  gap: 12px;
}

.page-faq .faq-hero-stats > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 18px;
}

.page-faq .faq-hero-stats dt {
  font-size: var(--fs-14);
  color: var(--slate);
}

.page-faq .faq-hero-stats dd {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: var(--fs-21);
  color: var(--deep);
  white-space: nowrap;
}

.page-faq .faq-hero-stats dd .mono-num {
  font-size: var(--fs-17);
  margin-right: 2px;
}

/* ---------- 主体骨架：左节点带 + 右内容流 ---------- */

.page-faq .faq-desk {
  display: grid;
  gap: 34px;
  padding-top: 52px;
  padding-bottom: 76px;
}

.page-faq .faq-rail {
  min-width: 0;
  max-width: 100%;
}

.page-faq .faq-rail-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 6px;
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .faq-rail-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px 9px 10px;
  border-radius: var(--pill);
  border: 1px solid var(--faq-card-line);
  background: var(--warm);
  color: var(--ink);
  font-size: var(--fs-14);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .25s ease, background-color .25s ease;
}

.page-faq .faq-rail-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--paper);
  color: var(--slate);
  font-size: var(--fs-12);
  flex: 0 0 auto;
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  border-color: var(--gold);
}

.page-faq .faq-rail-link:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-faq .faq-rail-link[aria-current="true"] {
  background: var(--deep);
  border-color: var(--deep);
  color: var(--warm);
}

.page-faq .faq-rail-link[aria-current="true"] .faq-rail-num {
  background: var(--gold);
  color: var(--deep);
}

.page-faq .faq-flow {
  display: grid;
  gap: 52px;
  min-width: 0;
}

.page-faq .faq-block {
  position: relative;
  scroll-margin-top: calc(var(--header-h) + 28px);
  --faq-accent: var(--gold);
}

.page-faq .faq-block::before {
  content: "";
  display: block;
  width: 56px;
  height: 4px;
  border-radius: var(--pill);
  background: var(--faq-accent);
  margin-bottom: 20px;
}

.page-faq .faq-block--types { --faq-accent: var(--mist); }
.page-faq .faq-block--check { --faq-accent: var(--indigo); }
.page-faq .faq-block--submit { --faq-accent: var(--coral); }
.page-faq .faq-block--other { --faq-accent: var(--wine); }

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

.page-faq .faq-block .section-title {
  margin: 0 0 16px;
}

.page-faq .faq-block .prose {
  margin: 0;
  color: var(--ink);
}

/* ---------- 图片 ---------- */

.page-faq .faq-figure {
  margin: 30px 0 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(140deg, var(--deep) 0%, var(--deep-2) 58%, var(--mist) 100%);
}

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

/* ---------- 三步排查 ---------- */

.page-faq .faq-steps {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-step {
  background: var(--warm);
  border: 1px solid var(--faq-card-line);
  border-radius: var(--radius-md);
  padding: 24px 22px;
}

.page-faq .faq-step-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.page-faq .faq-step-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 46px;
  height: 30px;
  padding: 0 12px;
  border-radius: var(--pill);
  background: var(--deep);
  color: var(--gold-soft);
  font-size: var(--fs-14);
}

.page-faq .faq-step h3 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: var(--fs-21);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-step p {
  margin: 0 0 12px;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--ink);
}

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

.page-faq .faq-verdict {
  border-left: 2px solid var(--faq-accent);
  padding-left: 14px;
  color: var(--deep-2);
}

.page-faq .faq-verdict span {
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .1em;
  color: var(--slate);
  margin-right: 8px;
}

/* ---------- 手风琴 ---------- */

.page-faq .faq-acc {
  display: grid;
  gap: 12px;
  margin-top: 30px;
}

.page-faq .faq-item {
  background: var(--warm);
  border: 1px solid var(--faq-card-line);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: var(--fs-17);
  line-height: 1.5;
  color: var(--ink);
}

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

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

.page-faq .faq-item summary:hover {
  background: rgba(143, 189, 180, .12);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: -4px;
}

.page-faq .faq-item summary .mono-num {
  flex: 0 0 auto;
  font-size: var(--fs-14);
  color: var(--slate);
}

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

.page-faq .faq-chevron {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid var(--slate);
  border-bottom: 2px solid var(--slate);
  transform: rotate(45deg);
  transition: transform .3s ease;
}

.page-faq .faq-item[open] .faq-chevron {
  transform: rotate(-135deg);
}

.page-faq .faq-item[open] summary {
  border-bottom: 1px solid var(--faq-card-line);
}

.page-faq .faq-item-body {
  padding: 18px 20px 22px;
}

.page-faq .faq-item-body p {
  margin: 0 0 12px;
  font-size: var(--fs-17);
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-item-act {
  font-size: var(--fs-14) !important;
  line-height: 1.75 !important;
  color: var(--slate) !important;
  margin-bottom: 0 !important;
}

.page-faq .faq-item-act a {
  color: var(--deep-2);
  text-decoration-color: var(--coral);
  text-underline-offset: 3px;
}

/* ---------- 自查清单 ---------- */

.page-faq .faq-checklist {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-checklist label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--faq-card-line);
  background: var(--warm);
  cursor: pointer;
  font-size: var(--fs-17);
  line-height: 1.7;
  color: var(--ink);
  transition: border-color .25s ease, background-color .25s ease;
}

.page-faq .faq-checklist label:hover {
  border-color: var(--indigo);
}

.page-faq .faq-checklist input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  position: relative;
  width: 20px;
  height: 20px;
  margin: 5px 0 0;
  border-radius: 6px;
  border: 1.5px solid rgba(90, 107, 122, .55);
  background: var(--paper);
  cursor: pointer;
}

.page-faq .faq-checklist input:checked {
  background: var(--gold);
  border-color: var(--gold);
}

.page-faq .faq-checklist input:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--deep);
  border-bottom: 2px solid var(--deep);
  transform: rotate(45deg);
}

.page-faq .faq-checklist input:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

.page-faq .faq-checklist input:checked + span {
  color: var(--slate);
}

.page-faq .faq-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--mist);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--slate);
}

/* ---------- 提交反馈 ---------- */

.page-faq .faq-submit-card {
  position: relative;
  margin-top: 30px;
  padding: 30px 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, var(--deep) 0%, var(--deep-2) 100%);
  overflow: hidden;
}

.page-faq .faq-submit-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255, 251, 243, .16) 1px, transparent 1px);
  background-size: 18px 18px;
  opacity: .45;
  pointer-events: none;
}

.page-faq .faq-submit-list {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 13px;
}

.page-faq .faq-submit-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  font-size: var(--fs-17);
  line-height: 1.75;
  color: var(--warm);
}

.page-faq .faq-submit-list .mono-num {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(240, 217, 168, .18);
  color: var(--gold-soft);
  font-size: var(--fs-12);
}

.page-faq .faq-submit-note {
  position: relative;
  z-index: 1;
  margin: 0 0 22px;
  padding-top: 16px;
  border-top: 1px solid rgba(240, 217, 168, .24);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--gold-soft);
}

.page-faq .faq-submit-btn {
  position: relative;
  z-index: 1;
}

/* ---------- 兜底与相关页面 ---------- */

.page-faq .faq-fallback {
  margin-top: 28px;
  padding: 26px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-card-line);
  background: var(--warm);
}

.page-faq .faq-fallback-line {
  margin: 0 0 12px;
  font-size: var(--fs-21);
  line-height: 1.6;
  color: var(--ink);
  font-family: var(--font-head);
  font-weight: 600;
}

.page-faq .faq-fallback-line a {
  font-family: var(--font-mono);
  font-size: var(--fs-17);
  color: var(--deep-2);
  text-decoration-color: var(--coral);
  text-underline-offset: 4px;
  word-break: break-all;
}

.page-faq .faq-fallback-note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--slate);
}

.page-faq .faq-links {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-links a {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border-radius: var(--pill);
  border: 1px solid var(--faq-card-line);
  background: var(--paper);
  color: var(--deep-2);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: border-color .25s ease, background-color .25s ease;
}

.page-faq .faq-links a:hover,
.page-faq .faq-links a:focus-visible {
  border-color: var(--gold);
  background: var(--warm);
}

.page-faq .faq-links a:focus-visible {
  outline: 2px solid var(--coral);
  outline-offset: 2px;
}

/* ---------- 平板 ---------- */

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: calc(var(--header-h) + 56px) 0 60px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1fr) 250px;
    align-items: end;
    gap: 48px;
  }

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

  .page-faq .faq-step:nth-child(2) {
    margin-left: 34px;
  }

  .page-faq .faq-step:nth-child(3) {
    margin-left: 68px;
  }

  .page-faq .faq-item-body {
    padding-left: 54px;
  }

  .page-faq .faq-submit-card {
    padding: 36px 34px;
  }

  .page-faq .faq-fallback {
    padding: 32px 30px;
  }
}

/* ---------- 桌面：左侧竖排节点带 ---------- */

@media (min-width: 1024px) {
  .page-faq .faq-desk {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 64px;
    padding-top: 64px;
    padding-bottom: 100px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    align-self: start;
  }

  .page-faq .faq-rail-list {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-rail-list li::before {
    content: "";
    position: absolute;
    left: 13px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: var(--faq-rail-line);
  }

  .page-faq .faq-rail-list li:first-child::before {
    top: 50%;
  }

  .page-faq .faq-rail-list li:last-child::before {
    bottom: 50%;
  }

  .page-faq .faq-rail-link {
    position: relative;
    z-index: 1;
    display: flex;
    width: 100%;
    padding: 10px 0;
    border: 0;
    border-radius: 0;
    background: none;
    white-space: normal;
  }

  .page-faq .faq-rail-link:hover {
    background: none;
  }

  .page-faq .faq-rail-link .faq-rail-num {
    width: 27px;
    height: 27px;
    background: var(--paper);
    border: 1px solid var(--faq-rail-line);
    transition: background-color .25s ease, border-color .25s ease;
  }

  .page-faq .faq-rail-name {
    color: var(--slate);
    transition: color .25s ease;
  }

  .page-faq .faq-rail-link:hover .faq-rail-num {
    border-color: var(--gold);
  }

  .page-faq .faq-rail-link:hover .faq-rail-name {
    color: var(--ink);
  }

  .page-faq .faq-rail-link[aria-current="true"] {
    background: none;
  }

  .page-faq .faq-rail-link[aria-current="true"] .faq-rail-num {
    background: var(--gold);
    border-color: var(--gold);
    color: var(--deep);
  }

  .page-faq .faq-rail-link[aria-current="true"] .faq-rail-name {
    color: var(--deep);
  }

  .page-faq .faq-rail-link[aria-current="true"]::after {
    content: "";
    position: absolute;
    right: 0;
    top: 50%;
    width: 26px;
    height: 2px;
    margin-top: -1px;
    border-radius: var(--pill);
    background: var(--gold);
  }

  .page-faq .faq-flow {
    gap: 68px;
  }

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

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-chevron,
  .page-faq .faq-checklist label,
  .page-faq .faq-rail-link,
  .page-faq .faq-rail-num,
  .page-faq .faq-rail-name,
  .page-faq .faq-links a {
    transition: none;
  }
}