.page-faq {
  --faq-index-w: 218px;
  --faq-index-top: 104px;
  background: var(--mist);
  color: var(--ink);
  font-family: var(--font-sans);
  line-height: 1.8;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: calc(var(--gutter) * 1.3) 0 calc(var(--gutter) * 1.5);
  background:
    radial-gradient(115% 92% at 8% -4%, rgba(78, 140, 122, 0.18), transparent 58%),
    radial-gradient(95% 85% at 92% 6%, rgba(217, 161, 74, 0.16), transparent 60%),
    radial-gradient(80% 70% at 50% 108%, rgba(47, 75, 114, 0.12), transparent 64%),
    linear-gradient(180deg, var(--mist) 0%, var(--mist) 68%, rgba(234, 227, 215, 0.62) 100%);
  border-bottom: var(--rule);
}

.page-faq .faq-hero-mesh {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  pointer-events: none;
}

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

.page-faq .breadcrumb {
  font-size: 13px;
  color: var(--ink-soft);
}

.page-faq .faq-eyebrow {
  margin: 22px 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--spring);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(34px, 8.6vw, 72px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  max-width: 15em;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 44em;
  font-size: 16px;
  color: var(--ink-soft);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 10px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px dashed var(--blueprint-soft);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .faq-stat strong {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 600;
  line-height: 1;
  color: var(--ink);
}

.page-faq .faq-stat span {
  font-size: 13px;
  color: var(--ink-soft);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 26px;
  padding-top: 34px;
  padding-bottom: 76px;
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-faq .faq-index-nav {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index-nav::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index-link {
  flex: 0 0 auto;
  padding: 8px 16px;
  border: 1px solid var(--blueprint-soft);
  border-radius: var(--radius-pill);
  background: rgba(251, 249, 245, 0.92);
  color: var(--ink-soft);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-index-link:nth-child(1) { --idx: var(--spring); }
.page-faq .faq-index-link:nth-child(2) { --idx: var(--summer); }
.page-faq .faq-index-link:nth-child(3) { --idx: var(--autumn); }
.page-faq .faq-index-link:nth-child(4) { --idx: var(--summer); }
.page-faq .faq-index-link:nth-child(5) { --idx: var(--winter); }
.page-faq .faq-index-link:nth-child(6) { --idx: var(--autumn); }

.page-faq .faq-index-link:hover {
  color: var(--ink);
  border-color: var(--idx, var(--spring));
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  padding-top: 8px;
  margin-bottom: 52px;
  scroll-margin-top: 110px;
}

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

.page-faq .faq-section-head {
  margin-bottom: 24px;
}

.page-faq .faq-num {
  display: inline-block;
  margin-bottom: 12px;
  padding: 3px 11px;
  border: 1px solid var(--blueprint-soft);
  border-radius: var(--radius-pill);
  background: var(--gravel);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-soft);
}

.page-faq .faq-section-head h2 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(23px, 5.4vw, 36px);
  line-height: 1.28;
}

.page-faq .faq-section-head h2::after {
  content: "";
  display: block;
  margin-top: 16px;
  height: 1px;
  background-image: repeating-linear-gradient(90deg, var(--blueprint) 0 6px, transparent 6px 15px);
  opacity: 0.7;
}

.page-faq .faq-section-note {
  margin: 0;
  max-width: 42em;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 高频三问 ---------- */
.page-faq .faq-quick-grid {
  display: grid;
  gap: 16px;
}

.page-faq .faq-quick {
  padding: 22px 22px 18px;
  border-left: 3px solid var(--qa, var(--spring));
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-quick-tag {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--qa, var(--spring));
}

.page-faq .faq-quick h3 {
  margin: 0 0 10px;
  font-family: var(--font-sans);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-quick-answer {
  margin: 0;
  font-size: 15px;
  color: var(--ink-soft);
}

/* ---------- 折叠面板 ---------- */
.page-faq .faq-fold {
  border-top: 1px dashed var(--blueprint-soft);
  margin-top: 14px;
}

.page-faq .faq-fold summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
  transition: color 0.2s ease;
}

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

.page-faq .faq-fold summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: -4px;
  border-right: 1.6px solid var(--ink-soft);
  border-bottom: 1.6px solid var(--ink-soft);
  transform: rotate(45deg);
  transition: transform 0.25s ease, margin 0.25s ease;
}

.page-faq .faq-fold[open] summary::after {
  transform: rotate(-135deg);
  margin-top: 5px;
}

.page-faq .faq-fold summary:hover {
  color: var(--spring);
}

.page-faq .faq-fold-body {
  padding: 2px 0 16px;
  font-size: 15px;
  color: var(--ink-soft);
}

.page-faq .faq-fold-body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-folds {
  padding: 6px 22px 10px;
}

.page-faq .faq-folds .faq-fold:first-child {
  border-top: 0;
  margin-top: 0;
}

/* ---------- 九步节奏卡 ---------- */
.page-faq .faq-steps {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  display: grid;
  gap: 6px;
  padding: 18px 18px 16px;
  border: 1px solid var(--blueprint-soft);
  border-top: 3px solid var(--stage, var(--spring));
  border-radius: var(--radius-md);
  background: var(--mist);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.page-faq .faq-step:nth-child(-n + 3) { --stage: var(--spring); }
.page-faq .faq-step:nth-child(n + 4):nth-child(-n + 6) { --stage: var(--summer); }
.page-faq .faq-step:nth-child(n + 7) { --stage: var(--autumn); }

.page-faq .faq-step:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-step-num {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--stage, var(--spring));
}

.page-faq .faq-step h3 {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14px;
  color: var(--ink-soft);
}

.page-faq .faq-step-meta {
  margin-top: 4px;
  font-size: 12px;
  color: var(--blueprint);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 30px 0 0;
}

.page-faq .faq-figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
  font-size: 13px;
  color: var(--ink-soft);
}

.page-faq .faq-figure--closing {
  margin-top: 34px;
}

/* ---------- 设备对比 ---------- */
.page-faq .faq-devices {
  display: grid;
  gap: 14px;
}

.page-faq .faq-device {
  padding: 20px 20px 18px;
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(78, 140, 122, 0.12), rgba(78, 140, 122, 0.03));
  border: 1px solid var(--blueprint-soft);
}

.page-faq .faq-device--wide {
  background: linear-gradient(160deg, rgba(47, 75, 114, 0.14), rgba(47, 75, 114, 0.03));
}

.page-faq .faq-device-tag {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--ink-soft);
}

.page-faq .faq-device ul {
  margin: 0;
  padding-left: 18px;
  font-size: 15px;
  color: var(--ink);
}

.page-faq .faq-device li {
  margin-bottom: 8px;
}

.page-faq .faq-device li:last-child {
  margin-bottom: 0;
}

.page-faq .faq-device-notes {
  margin-top: 18px;
  padding-left: 16px;
  border-left: 2px solid var(--blueprint-soft);
  font-size: 15px;
  color: var(--ink-soft);
}

.page-faq .faq-device-notes p {
  margin: 0 0 10px;
}

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

/* ---------- 联系区块 ---------- */
.page-faq .faq-section--reach {
  padding: 30px 22px 26px;
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(242, 193, 78, 0.14), transparent 60%),
    linear-gradient(165deg, var(--winter) 0%, var(--night) 100%);
  color: var(--mist);
}

.page-faq .faq-section-head--light h2 {
  color: var(--mist);
}

.page-faq .faq-section-head--light h2::after {
  background-image: repeating-linear-gradient(90deg, rgba(251, 249, 245, 0.45) 0 6px, transparent 6px 15px);
}

.page-faq .faq-section-head--light .faq-section-note {
  color: rgba(251, 249, 245, 0.76);
}

.page-faq .faq-section-head--light .faq-num {
  background: rgba(251, 249, 245, 0.1);
  border-color: rgba(251, 249, 245, 0.3);
  color: rgba(251, 249, 245, 0.8);
}

.page-faq .faq-reach-grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-reach-item {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(251, 249, 245, 0.07);
  border: 1px solid rgba(251, 249, 245, 0.18);
}

.page-faq .faq-reach-label {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: rgba(251, 249, 245, 0.6);
}

.page-faq .faq-reach-value {
  margin: 0 0 14px;
  font-size: 15px;
  word-break: break-all;
  color: var(--poplar);
}

.page-faq .faq-reach-text {
  margin: 0 0 14px;
  font-size: 14px;
  color: rgba(251, 249, 245, 0.8);
}

.page-faq .faq-reach-btn {
  display: inline-block;
  text-decoration: none;
}

.page-faq .faq-tips {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px dashed rgba(251, 249, 245, 0.22);
}

.page-faq .faq-tips h3 {
  margin: 0 0 12px;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .faq-tips ul {
  margin: 0 0 14px;
  padding-left: 18px;
  font-size: 15px;
  color: rgba(251, 249, 245, 0.82);
}

.page-faq .faq-tips li {
  margin-bottom: 8px;
}

.page-faq .faq-tips p {
  margin: 0;
  font-size: 14px;
  color: rgba(251, 249, 245, 0.7);
}

.page-faq .faq-tips .text-link {
  color: var(--poplar);
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
  }

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

  .page-faq .faq-quick-grid > .faq-quick:last-child {
    grid-column: 1 / -1;
  }

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

  .page-faq .faq-reach-grid > .faq-reach-item:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .faq-section--reach {
    padding: 40px 36px 34px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-quick-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-quick-grid > .faq-quick:last-child {
    grid-column: auto;
  }

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

  .page-faq .faq-reach-grid > .faq-reach-item:last-child {
    grid-column: auto;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 58px;
    padding-top: 48px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-index-top);
    align-self: start;
  }

  .page-faq .faq-index-title {
    padding-left: 14px;
  }

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

  .page-faq .faq-index-link {
    flex: initial;
    padding: 9px 0 9px 14px;
    border: 0;
    border-left: 2px solid var(--blueprint-soft);
    border-radius: 0;
    background: none;
    white-space: normal;
    font-size: 15px;
    text-align: left;
    line-height: 1.6;
    transition: color 0.2s ease, border-color 0.2s ease;
  }

  .page-faq .faq-index-link:hover {
    border-left-color: var(--idx, var(--spring));
  }

  .page-faq .faq-index-link[aria-current="true"] {
    color: var(--ink);
    font-weight: 600;
    border-left-color: var(--idx, var(--spring));
  }

  .page-faq .faq-section-head h2 {
    font-size: clamp(26px, 2.6vw, 36px);
  }

  .page-faq .faq-figure--closing {
    max-width: 82%;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-hero h1 {
    font-size: 72px;
  }

  .page-faq .faq-lead {
    font-size: 17px;
  }
}

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

  .page-faq .faq-step:hover {
    transform: none;
  }
}

.page-faq {
  --qa: currentColor;
}