.page-faq {
  --faq-readable: 720px;
  --faq-line: #CFC7B6;
  --faq-soft: #4A5261;
  background: var(--ink);
  overflow-x: clip;
}

.page-faq [id] {
  scroll-margin-top: 100px;
}

.page-faq .eyebrow {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--yellow);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(84px, 13vw, 148px) 0 clamp(40px, 6vw, 72px);
  background:
    radial-gradient(circle at 84% 10%, rgba(37, 208, 230, .16), transparent 44%),
    radial-gradient(circle at 6% 82%, rgba(255, 107, 44, .14), transparent 46%),
    var(--ink);
  color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, rgba(142, 153, 171, .12) 0 1px, transparent 1px 96px);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb {
  margin-bottom: clamp(24px, 4vw, 44px);
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--rock);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-faq .breadcrumb a {
  color: var(--rock);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

.page-faq .faq-hero-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 5vw, 48px);
}

.page-faq .faq-hero h1 {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  max-width: 620px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.6vw, 56px);
  line-height: 1.12;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-faq .faq-hero .lede {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--rock-light);
}

.page-faq .faq-note {
  padding: 22px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(17, 28, 51, .88);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-note-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--yellow);
}

.page-faq .faq-note-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-note-list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(142, 153, 171, .3);
  font-size: 13.5px;
}

.page-faq .faq-note-list li:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-note-list .k {
  color: var(--rock);
}

.page-faq .faq-note-list .v {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--paper);
  text-align: right;
}

/* ---------- 场景四宫格 ---------- */
.page-faq .faq-scenes {
  padding: clamp(48px, 8vw, 92px) 0;
  background: var(--ink-2);
  color: var(--paper);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-scenes-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-scenes-head h2 {
  margin: 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .scene-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(12px, 2vw, 20px);
}

.page-faq .scene-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  box-shadow: var(--shadow-hard);
  transition: border-color .18s var(--ease), transform .18s var(--ease), box-shadow .18s var(--ease);
}

.page-faq .scene-card:hover,
.page-faq .scene-card:focus-visible {
  border-color: var(--orange);
  transform: translate(-2px, -2px);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, .5);
}

.page-faq .scene-card-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  line-height: 1;
  color: var(--yellow);
}

.page-faq .scene-card-title {
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .scene-card-desc {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--rock);
}

.page-faq .scene-card-more {
  margin-top: auto;
  padding-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--cyan);
}

.page-faq .faq-scenes .media-frame {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

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

.page-faq .media-caption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(44px, 7vw, 96px) 0;
  background: var(--sand);
  color: var(--ink-text);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-toc-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--clay);
}

.page-faq .faq-toc-list {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-toc-list a {
  display: block;
  padding: 8px 0 8px 12px;
  border-left: 2px solid transparent;
  font-size: 14px;
  line-height: 1.5;
  color: var(--faq-soft);
  text-decoration: none;
  transition: color .16s var(--ease), border-color .16s var(--ease);
}

.page-faq .faq-toc-list a:hover,
.page-faq .faq-toc-list a:focus-visible {
  color: var(--ink-text);
  border-left-color: var(--orange);
}

.page-faq .faq-main {
  max-width: var(--faq-readable);
}

.page-faq .filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .filter-btn {
  appearance: none;
  cursor: pointer;
  padding: 9px 16px;
  border: 1px solid #C3BBA9;
  border-radius: 999px;
  background: transparent;
  color: var(--faq-soft);
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1;
  transition: color .16s var(--ease), border-color .16s var(--ease), background-color .16s var(--ease);
}

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

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

.page-faq .filter-status {
  flex-basis: 100%;
  margin: 4px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--faq-soft);
}

.page-faq .filter-status:empty {
  display: none;
}

.page-faq .qa-group {
  padding-top: clamp(28px, 4vw, 44px);
}

.page-faq .qa-group-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.3;
  letter-spacing: .01em;
  color: var(--ink-text);
}

.page-faq .qa-group-note {
  margin: 0 0 14px;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-soft);
}

.page-faq .qa-item {
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .qa-item > summary {
  position: relative;
  display: block;
  padding: 18px 44px 18px 0;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--ink-text);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa-item > summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 15px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  color: var(--clay);
}

.page-faq .qa-item[open] > summary::after {
  content: "–";
}

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

.page-faq .qa-answer {
  padding: 0 44px 22px 0;
  font-size: 15.5px;
  line-height: 1.8;
  color: #3E4553;
}

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

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

.page-faq .qa-answer a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa-steps {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: qastep;
}

.page-faq .qa-steps li {
  position: relative;
  padding-left: 32px;
  counter-increment: qastep;
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .qa-steps li::before {
  content: counter(qastep);
  position: absolute;
  left: 0;
  top: 3px;
  display: grid;
  place-items: center;
  width: 21px;
  height: 21px;
  border-radius: 50%;
  background: var(--yellow);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}

/* ---------- 反馈流程 ---------- */
.page-faq .faq-flow {
  padding: clamp(44px, 7vw, 96px) 0;
  background: var(--ink-2);
  color: var(--paper);
  border-top: 1px solid var(--line);
}

.page-faq .flow-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .flow-copy h2 {
  margin: 0;
  max-width: 24ch;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 34px);
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .flow-steps {
  display: grid;
  gap: 18px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  counter-reset: flowstep;
}

.page-faq .flow-steps li {
  position: relative;
  padding-left: 46px;
  counter-increment: flowstep;
}

.page-faq .flow-steps li::before {
  content: "0" counter(flowstep);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 3px 6px;
  border-radius: 2px;
  background: var(--yellow);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.2;
}

.page-faq .flow-steps strong {
  display: block;
  margin-bottom: 4px;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--paper);
}

.page-faq .flow-steps p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--rock-light);
}

.page-faq .faq-flow .media-frame {
  margin: 0;
}

/* ---------- 底部联系 ---------- */
.page-faq .faq-contact {
  padding: clamp(44px, 7vw, 88px) 0;
  background: var(--orange);
  color: var(--ink);
}

.page-faq .faq-contact-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 40px);
  align-items: center;
}

.page-faq .faq-contact h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .faq-contact p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .contact-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.page-faq .contact-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 26px;
  border: 1px solid var(--ink);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: .04em;
  box-shadow: 6px 6px 0 rgba(11, 18, 36, .32);
  transition: transform .16s var(--ease), box-shadow .16s var(--ease);
}

.page-faq .contact-btn:hover,
.page-faq .contact-btn:focus-visible {
  transform: translate(-2px, -2px);
  box-shadow: 9px 9px 0 rgba(11, 18, 36, .38);
}

.page-faq .contact-email {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  word-break: break-all;
  color: var(--ink);
}

/* ---------- 响应式 ---------- */
@media (min-width: 680px) {
  .page-faq .scene-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, .55fr);
    align-items: end;
  }

  .page-faq .faq-contact-inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 196px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 116px;
  }

  .page-faq .flow-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: center;
  }
}

@media (min-width: 1180px) {
  .page-faq .scene-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .scene-card,
  .page-faq .contact-btn,
  .page-faq .filter-btn,
  .page-faq .faq-toc-list a {
    transition: none;
  }

  .page-faq .scene-card:hover,
  .page-faq .scene-card:focus-visible,
  .page-faq .contact-btn:hover,
  .page-faq .contact-btn:focus-visible {
    transform: none;
  }
}