.page-faq {
  display: block;
  overflow-x: clip;
}

/* ---------- 面包屑微调 ---------- */
.page-faq .crumbs ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 16px 0 0;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .04em;
}
.page-faq .crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--note);
}
.page-faq .crumbs a {
  color: var(--night);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color var(--ease), border-color var(--ease);
}
.page-faq .crumbs a:hover {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: 6px;
}
.page-faq .faq-hero-grid {
  display: grid;
  gap: 26px;
  padding-block: 18px 26px;
}
.page-faq .hero-lead {
  min-width: 0;
}
.page-faq .hero-count {
  display: flex;
  flex-direction: column;
  margin: 6px 0 12px;
}
.page-faq .hero-count-num {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(70px, 21vw, 104px);
  line-height: .78;
  letter-spacing: -0.03em;
  color: var(--ochre);
  font-variant-numeric: tabular-nums;
  display: block;
}
.page-faq .hero-count-cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--note);
}
.page-faq h1 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(32px, 8.4vw, 48px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 14px;
}
.page-faq .hero-text {
  font-size: 16.5px;
  line-height: 1.78;
  color: var(--ink);
  margin: 0;
  max-width: 34em;
}

/* 首屏索引面板 */
.page-faq .hero-index {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-2);
  min-width: 0;
}
.page-faq .hero-index .panel-head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 14px;
  background: var(--deep);
  color: var(--paper);
}
.page-faq .hero-index .panel-num {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--whistle);
}
.page-faq .hero-index .panel-title {
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: .04em;
}
.page-faq .index-body {
  display: grid;
  gap: 18px;
  padding: 16px 14px 18px;
}
.page-faq .index-group {
  min-width: 0;
}
.page-faq .index-group-title {
  margin: 0 0 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--deep);
}
.page-faq .index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}
.page-faq .index-list a {
  display: block;
  padding: 2px 0;
  font-size: 14px;
  line-height: 1.55;
  color: var(--night);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: transform var(--ease), color var(--ease), border-color var(--ease);
}
.page-faq .index-list a::before {
  content: "→ ";
  color: var(--note);
  font-family: var(--font-mono);
  font-size: 12px;
}
.page-faq .index-list a:hover {
  transform: translateX(2px);
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

/* 首屏斜向区间色带 */
.page-faq .faq-band-wrap {
  overflow: hidden;
  padding-block: 8px 4px;
}
.page-faq .faq-band {
  display: block;
  width: 104%;
  margin-left: -2%;
  height: 12px;
  transform: rotate(-3deg);
  border: 1px solid var(--line);
  background: linear-gradient(90deg,
    var(--ochre) 0 20%,
    var(--night) 20% 40%,
    var(--pitch) 40% 58%,
    var(--cream) 58% 78%,
    var(--correct) 78% 100%);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  position: relative;
  padding-block: 44px 12px;
}
.page-faq .faq-section::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg,
    var(--ochre) 0 20%,
    var(--night) 20% 40%,
    var(--pitch) 40% 60%,
    var(--whistle) 60% 80%,
    var(--correct) 80% 100%);
  opacity: .72;
}
.page-faq .faq-sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 22px;
}
.page-faq .faq-sec-num {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ochre);
  border: 1px solid var(--line);
  padding: 3px 9px;
  background: var(--cream);
}
.page-faq h2 {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(22px, 4.6vw, 32px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ink);
}
.page-faq .faq-sec-note {
  flex: 1 1 100%;
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--note);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
  min-width: 0;
}
.page-faq .qa {
  border: 1px solid var(--line-soft);
  background: var(--paper);
  box-shadow: var(--shadow-1);
  transition: box-shadow var(--ease), border-color var(--ease);
}
.page-faq .qa > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 14px 15px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--ink);
  transition: background var(--ease);
}
.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}
.page-faq .qa > summary:hover {
  background: var(--cream);
}
.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--whistle);
  outline-offset: -2px;
}
.page-faq .qa-num {
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--ochre);
  white-space: nowrap;
}
.page-faq .qa-text {
  min-width: 0;
}
.page-faq .qa-mark {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  margin-top: 4px;
}
.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
  background: var(--whistle);
  transition: transform var(--ease), opacity var(--ease);
}
.page-faq .qa-mark::after {
  transform: rotate(90deg);
}
.page-faq .qa[open] > summary {
  background: var(--cream);
}
.page-faq .qa[open] .qa-mark::after {
  transform: rotate(90deg) scaleX(0);
  opacity: 0;
}
.page-faq .qa[open] {
  border-color: var(--note);
  box-shadow: var(--shadow-2);
}
.page-faq .qa-body {
  padding: 14px 15px 18px;
  border-top: 1px dashed var(--line-soft);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--ink);
}
.page-faq .qa-body p {
  margin: 0;
  max-width: 40em;
}
.page-faq .qa:target {
  border-color: var(--whistle);
  box-shadow: var(--shadow-2), inset 4px 0 0 var(--whistle);
}
.page-faq .qa:target > summary {
  color: var(--ochre);
}
@media (hover: hover) {
  .page-faq .qa:hover {
    border-color: var(--note);
    box-shadow: var(--shadow-2);
  }
}

/* 区间色带 SVG */
.page-faq .band-svg {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin: 16px 0 2px;
  border: 1px solid var(--line-soft);
  background: var(--paper);
}
.page-faq .band-svg .sb1 { fill: var(--ochre); }
.page-faq .band-svg .sb2 { fill: var(--night); }
.page-faq .band-svg .sb3 { fill: var(--pitch); }
.page-faq .band-svg .sb4 { fill: var(--cream); stroke: var(--line); stroke-width: 1; }
.page-faq .band-svg .sb5 { fill: var(--correct); }
.page-faq .band-svg .sbl {
  font-family: var(--font-mono);
  font-size: 13px;
  fill: var(--ink);
}

/* ---------- 口径章节两栏 ---------- */
.page-faq .kq-layout {
  display: grid;
  gap: 24px;
}
.page-faq .kq-side {
  order: -1;
  min-width: 0;
}

/* ---------- 图片 ---------- */
.page-faq .figure {
  margin: 0;
}
.page-faq .figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
  background: var(--cream);
}
.page-faq .figure-cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--note);
}
.page-faq .figure--flow {
  margin: 0 0 26px;
}

/* ---------- 反馈章节 ---------- */
.page-faq .feedback-grid {
  display: grid;
  gap: 24px;
}
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}
.page-faq .steps > li {
  border: 1px solid var(--line);
  border-top: 4px solid var(--whistle);
  background: var(--cream);
  padding: 14px 15px 16px;
  box-shadow: var(--shadow-1);
  transition: box-shadow var(--ease), transform var(--ease);
}
.page-faq .steps > li:hover {
  box-shadow: var(--shadow-2);
  transform: translateY(-2px);
}
.page-faq .step-num {
  display: inline-block;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ochre);
  border-bottom: 1px solid var(--line);
  padding-bottom: 2px;
  margin-bottom: 8px;
}
.page-faq .step-title {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .02em;
  margin: 0 0 6px;
  color: var(--ink);
}
.page-faq .step-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--shade);
}
.page-faq .contact-kv {
  border: 1px solid var(--line);
  background: var(--paper);
  box-shadow: var(--shadow-1);
  align-self: start;
}
.page-faq .contact-kv .kv-row {
  display: grid;
  grid-template-columns: 5.5em minmax(0, 1fr);
  gap: 12px;
  padding: 12px 15px;
  border-bottom: 1px solid var(--line-soft);
  transition: background var(--ease);
}
.page-faq .contact-kv .kv-row:last-child {
  border-bottom: 0;
}
.page-faq .contact-kv .kv-row:hover {
  background: var(--cream);
}
.page-faq .contact-kv .kv-key {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--note);
}
.page-faq .contact-kv .kv-val {
  font-size: 15px;
  line-height: 1.6;
  color: var(--ink);
  word-break: break-word;
}

/* ---------- 术语小表 ---------- */
.page-faq .table-scroll {
  overflow-x: auto;
  border: 1px solid var(--line);
  box-shadow: var(--shadow-1);
  background: var(--paper);
}
.page-faq .term-table {
  width: 100%;
  min-width: 480px;
  border-collapse: collapse;
  font-size: 14.5px;
}
.page-faq .term-table caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--note);
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .term-table th,
.page-faq .term-table td {
  text-align: left;
  vertical-align: top;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line-soft);
  line-height: 1.7;
}
.page-faq .term-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--paper);
  background: var(--deep);
  border-bottom: 1px solid var(--deep);
}
.page-faq .term-table tbody tr:nth-child(odd) {
  background: rgba(234, 223, 198, .45);
}
.page-faq .term-table tbody tr:last-child th,
.page-faq .term-table tbody tr:last-child td {
  border-bottom: 0;
}
.page-faq .term-table tbody th {
  font-weight: 700;
  color: var(--ink);
}
.page-faq .term-name {
  display: block;
}
.page-faq .term-links {
  display: block;
  margin-top: 6px;
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--note);
}
.page-faq .term-links a {
  color: var(--night);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  transition: color var(--ease), border-color var(--ease);
}
.page-faq .term-links a:hover,
.page-faq .term-links a:focus-visible {
  color: var(--whistle);
  border-bottom-color: var(--whistle);
}

/* ---------- 不处理事项 ---------- */
.page-faq .not-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-faq .not-list li {
  position: relative;
  padding: 13px 15px 13px 42px;
  border-left: 3px solid var(--correct);
  background: rgba(176, 58, 46, .06);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink);
}
.page-faq .not-list li::before {
  content: "×";
  position: absolute;
  left: 16px;
  top: 12px;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--correct);
}

/* ---------- 结尾动作 ---------- */
.page-faq .faq-next {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}
.page-faq .faq-next .btn {
  flex: 0 1 auto;
}

/* ---------- 返回顶部 ---------- */
.page-faq .to-top {
  position: fixed;
  right: 14px;
  bottom: 16px;
  z-index: 30;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  background: var(--deep);
  color: var(--paper);
  font-size: 16px;
  text-decoration: none;
  border: 1px solid var(--paper);
  box-shadow: var(--shadow-1);
  transition: background var(--ease), color var(--ease), box-shadow var(--ease);
}
.page-faq .to-top:hover,
.page-faq .to-top:focus-visible {
  background: var(--whistle);
  color: var(--ink);
  box-shadow: var(--shadow-2);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .index-body {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px 26px;
  }
  .page-faq .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 44px;
    align-items: start;
    padding-block: 28px 36px;
  }
  .page-faq .feedback-grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: 30px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .kq-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 34px;
    align-items: start;
  }
  .page-faq .kq-side {
    order: 0;
    position: sticky;
    top: 24px;
  }
  .page-faq .term-table {
    min-width: 0;
  }
  .page-faq .term-links {
    opacity: 0;
    transition: opacity var(--ease);
  }
  .page-faq .term-table tbody tr:hover .term-links,
  .page-faq .term-table tbody tr:focus-within .term-links {
    opacity: 1;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa > summary,
  .page-faq .qa-mark::before,
  .page-faq .qa-mark::after,
  .page-faq .index-list a,
  .page-faq .steps > li,
  .page-faq .to-top,
  .page-faq .term-links {
    transition: none;
  }
  .page-faq .steps > li:hover {
    transform: none;
  }
  .page-faq .index-list a:hover {
    transform: none;
  }
}