.page-faq {
  --faq-border: 2px solid var(--ink);
  --faq-shift: 8px;
  display: block;
}

.page-faq .page-shell {
  padding-top: clamp(18px, 3vw, 34px);
  padding-bottom: clamp(48px, 6vw, 84px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(20px, 3.6vw, 44px);
  background: var(--paper);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  pointer-events: none;
  display: none;
}

.page-faq .faq-hero-main {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  margin-top: 18px;
}

.page-faq .faq-hero-copy h1 {
  font-family: var(--serif);
  font-weight: 800;
  font-size: clamp(28px, 5.4vw, 52px);
  line-height: 1.18;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 16px;
}

.page-faq .faq-lead {
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink);
  margin: 0 0 22px;
  max-width: 46em;
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-hero-card {
  position: relative;
  padding: 20px 22px 22px;
  background: var(--deep);
  color: var(--paper);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-stamp {
  font-family: var(--mono);
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--sand);
  margin: 0 0 10px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--sand);
}

.page-faq .faq-hero-note {
  font-size: 13px;
  line-height: 1.7;
  color: var(--shallow);
  margin: 0 0 14px;
}

.page-faq .faq-hero-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-hero-list li {
  font-size: 14px;
  line-height: 1.6;
  padding-left: 16px;
  position: relative;
  color: var(--paper);
}

.page-faq .faq-hero-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  background: var(--brick);
  border-radius: 2px;
}

/* ---------- 横幅图 ---------- */
.page-faq .faq-banner {
  margin: clamp(24px, 4vw, 44px) 0 0;
}

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

.page-faq .faq-banner-cap {
  margin-top: 10px;
}

/* ---------- 四步流程 ---------- */
.page-faq .faq-flow {
  margin-top: clamp(32px, 5vw, 60px);
}

.page-faq .faq-flow-head .faq-block-note {
  margin-bottom: 0;
}

.page-faq .faq-flow-grid {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  padding: 18px 18px 20px;
  background: var(--paper);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: 4px 4px 0 var(--shallow);
}

.page-faq .faq-step-icon {
  display: block;
  width: 30px;
  height: 30px;
  margin-bottom: 12px;
}

.page-faq .faq-step-icon svg {
  display: block;
  width: 100%;
  height: 100%;
}

.page-faq .si-ring {
  fill: none;
  stroke: var(--teal);
  stroke-width: 2.5;
}

.page-faq .si-arrow {
  fill: none;
  stroke: var(--brick);
  stroke-width: 2.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.page-faq .faq-step-num {
  margin: 0 0 6px;
  color: var(--sand);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .faq-step-title {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--ink);
  margin: 0 0 8px;
}

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

.page-faq .faq-step-text a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--sand);
}

/* ---------- 检索工具条 ---------- */
.page-faq .faq-toolbar {
  margin-top: clamp(32px, 5vw, 56px);
  padding: 16px 18px;
  background: var(--sand-soft);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: 4px 4px 0 var(--sand);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}

.page-faq .faq-search {
  display: block;
}

.page-faq .faq-search .search-label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--deep);
  margin-bottom: 6px;
}

.page-faq .faq-search .search-input {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--sans);
  font-size: 15px;
  color: var(--ink);
  background: var(--paper);
  border: 2px solid var(--deep);
  border-radius: var(--radius-pill);
}

.page-faq .faq-search .search-input:focus {
  outline: 3px solid var(--brick);
  outline-offset: 2px;
}

.page-faq .faq-search-count {
  margin: 0;
  font-size: 13px;
  color: var(--deep);
}

/* ---------- 索引 + 列表布局 ---------- */
.page-faq .faq-layout {
  margin-top: clamp(24px, 4vw, 40px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 40px);
  align-items: start;
}

.page-faq .faq-index {
  padding: 16px 16px 18px;
  background: var(--shallow);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: 4px 4px 0 var(--deep);
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--serif);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: 0.04em;
  color: var(--deep);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  border-radius: 8px;
  border-left: 4px solid transparent;
  transition: background-color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: var(--paper);
  border-left-color: var(--brick);
}

.page-faq .faq-index-link[aria-current="true"] {
  background: var(--paper);
  border-left-color: var(--sand);
  font-weight: 700;
}

.page-faq .faq-index-count {
  flex: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: var(--deep);
  background: var(--paper);
  border: 1px solid var(--deep);
  border-radius: var(--radius-pill);
  padding: 1px 8px;
}

/* ---------- 章节块 ---------- */
.page-faq .faq-block {
  margin-bottom: clamp(32px, 5vw, 56px);
  scroll-margin-top: 110px;
}

.page-faq .faq-block:last-of-type {
  margin-bottom: 0;
}

.page-faq .faq-block .section-head {
  margin-bottom: 18px;
}

.page-faq .faq-block-note {
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
  margin: 10px 0 0;
  max-width: 52em;
}

/* ---------- 帮助文档三条路径 ---------- */
.page-faq .faq-paths {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-path {
  padding: 18px 18px 20px;
  background: var(--paper);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: 4px 4px 0 var(--shallow);
}

.page-faq .faq-path-title {
  font-family: var(--serif);
  font-size: 17px;
  font-weight: 800;
  line-height: 1.4;
  color: var(--deep);
  letter-spacing: 0.01em;
  text-decoration: underline;
  text-decoration-color: var(--sand);
  text-decoration-thickness: 2px;
  text-underline-offset: 5px;
  margin: 0 0 10px;
}

.page-faq .faq-path p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
  margin: 0;
}

.page-faq .faq-path p a,
.page-faq .faq-path-tail a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--sand);
}

.page-faq .faq-doc-figure {
  margin: 20px 0;
}

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

.page-faq .faq-path-tail {
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
  margin: 0;
  padding: 14px 16px;
  background: var(--sand-soft);
  border-left: 6px solid var(--sand);
  border-radius: 8px;
}

/* ---------- 折叠条目 ---------- */
.page-faq .faq-item {
  background: var(--paper);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: 3px 3px 0 var(--shallow);
  transition: transform 0.22s var(--ease), border-color 0.22s var(--ease), box-shadow 0.22s var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 12px;
}

.page-faq .faq-item[open] {
  border-color: var(--deep);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .faq-q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 20px;
  line-height: 1;
  color: var(--brick);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-q::after {
  content: "−";
}

.page-faq .faq-q:focus-visible {
  outline: 3px solid var(--brick);
  outline-offset: -3px;
  border-radius: var(--radius-card);
}

.page-faq .faq-q-text {
  display: block;
}

.page-faq .faq-a {
  padding: 0 18px 18px;
  border-top: 1px dashed var(--mist);
  margin-top: 0;
}

.page-faq .faq-sym {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 6px 14px;
  margin: 14px 0 0;
}

.page-faq .faq-sym dt {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--deep);
  background: var(--shallow);
  border-radius: 4px;
  padding: 2px 0;
  text-align: center;
  align-self: start;
  margin-top: 3px;
}

.page-faq .faq-sym dd {
  margin: 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink);
}

.page-faq .faq-sym dd a {
  color: var(--teal);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
  text-decoration-color: var(--sand);
}

/* ---------- 联系区 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(36px, 5vw, 60px);
  padding: clamp(20px, 3.4vw, 34px);
  background: var(--deep);
  color: var(--paper);
  border: var(--faq-border);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hard);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-faq .faq-contact .section-label {
  color: var(--sand);
}

.page-faq .faq-contact .section-title {
  color: var(--paper);
  margin: 8px 0 12px;
}

.page-faq .faq-contact-copy p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--shallow);
  margin: 0;
}

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

.page-faq .faq-contact-list li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 14px;
  font-size: 15px;
  line-height: 1.6;
  color: var(--paper);
  background: rgba(255, 251, 242, 0.08);
  border: 1px solid var(--teal);
  border-radius: 10px;
}

.page-faq .faq-contact-list .meta-mono {
  color: var(--sand);
  font-size: 13px;
}

.page-faq .faq-contact-foot p {
  font-size: 15px;
  line-height: 1.85;
  color: var(--shallow);
  margin: 0 0 16px;
}

.page-faq .faq-contact-foot a:not(.btn) {
  color: var(--sand);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 2px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-toolbar {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 18px 22px;
  }

  .page-faq .faq-search-count {
    text-align: right;
  }

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

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

  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px 32px;
  }

  .page-faq .faq-contact-copy {
    grid-column: 1 / -1;
  }

  .page-faq .faq-contact-foot {
    grid-column: 1 / -1;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }

  .page-faq .faq-contact-foot p {
    margin: 0;
    max-width: 46em;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-hero::before {
    display: block;
    left: 46%;
    right: -8%;
    top: -26%;
    bottom: 48%;
    background: var(--shallow);
    transform: rotate(-7deg);
  }

  .page-faq .faq-hero::after {
    display: block;
    left: 60%;
    right: -12%;
    top: 54%;
    bottom: -34%;
    background: var(--sand-soft);
    transform: rotate(-4deg);
  }

  .page-faq .faq-item[open] {
    transform: translateX(calc(var(--faq-shift) * -1));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-main {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: end;
  }

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

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

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q::after,
  .page-faq .faq-index-link {
    transition: none;
  }

  .page-faq .faq-item[open] {
    transform: none;
  }
}
<<<END>>>