.page-faq {
  color: var(--cool);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 30px);
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(24px, 4vw, 46px) 0 clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(2rem, 7vw, 4.2rem);
  line-height: 1.05;
  color: var(--paper);
  margin: 12px 0 18px;
  max-width: 18ch;
}

.page-faq .faq-lead {
  max-width: 48ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--mist);
  margin: 0;
}

.page-faq .hero-stats {
  list-style: none;
  display: grid;
  gap: 12px;
  margin: 26px 0 0;
  padding: 0;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
}

.page-faq .hero-stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding-left: 12px;
  border-left: 2px solid var(--line-strong);
}

.page-faq .hero-stats li:first-child {
  border-left-color: var(--cyan);
}

.page-faq .hero-stats .mono {
  font-family: var(--font-mono);
  font-size: clamp(1.05rem, 2.4vw, 1.4rem);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: -0.01em;
}

.page-faq .hero-stats li span:last-child {
  font-size: 12px;
  letter-spacing: 0.03em;
  color: var(--sage);
}

/* 主体双栏 */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  padding-top: clamp(32px, 5vw, 56px);
}

/* 三步排查卡 */
.page-faq .faq-steps {
  position: relative;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-steps-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-faq .faq-steps-bg img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.22;
  filter: saturate(0.55) brightness(0.8);
}

.page-faq .faq-steps-inner {
  position: relative;
  z-index: 1;
  padding: clamp(20px, 3vw, 30px);
  background: linear-gradient(180deg, rgba(7, 21, 18, 0.5) 0%, rgba(7, 21, 18, 0.93) 62%);
}

.page-faq .faq-steps-inner h2 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(1.3rem, 3vw, 1.7rem);
  line-height: 1.25;
  color: var(--paper);
  margin: 8px 0 8px;
}

.page-faq .steps-note {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-faq .step-item:first-child {
  border-top: 0;
}

.page-faq .step-check {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .step-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  border-radius: 8px;
}

.page-faq .step-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
  padding-top: 3px;
}

.page-faq .step-body {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.page-faq .step-body strong {
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
  transition: color 0.2s ease;
}

.page-faq .step-body span {
  font-size: 13px;
  line-height: 1.65;
  color: var(--sage);
}

.page-faq .step-dot {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 3px;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .step-check:checked + .step-label .step-dot {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .step-check:checked + .step-label .step-body strong {
  color: var(--cyan);
}

.page-faq .step-check:focus-visible + .step-label {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

/* 分组标签 */
.page-faq .faq-tabs {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 14px;
  margin: 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  font-size: 14px;
  white-space: nowrap;
  color: var(--mist);
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-tab .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--amber);
}

.page-faq .faq-tab:hover,
.page-faq .faq-tab:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(59, 242, 206, 0.08);
}

/* 问题分组 */
.page-faq .qa-group {
  margin-top: clamp(32px, 5vw, 52px);
  scroll-margin-top: 96px;
}

.page-faq .qa-group-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.01em;
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  color: var(--paper);
}

.page-faq .qa-group-index {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .qa-group-note {
  max-width: 46ch;
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--sage);
}

.page-faq .qa-group-note a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .qa-group-note a:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .qa {
  border-top: 1px solid var(--line);
  border-left: 3px solid transparent;
  transition: border-left-color 0.2s ease;
}

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

.page-faq .qa summary {
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 4px 16px 12px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

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

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

.page-faq .qa-icon {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 4px;
  margin-left: auto;
}

.page-faq .qa-icon::before,
.page-faq .qa-icon::after {
  content: "";
  position: absolute;
  background: var(--mist);
  border-radius: 1px;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.page-faq .qa-icon::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .qa-icon::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .qa[open] {
  border-left-color: var(--cyan);
}

.page-faq .qa[open] .qa-icon::before {
  background: var(--cyan);
}

.page-faq .qa[open] .qa-icon::after {
  transform: scaleY(0);
}

.page-faq .qa-body {
  padding: 0 4px 18px 12px;
}

.page-faq .qa-check {
  margin: 0 0 10px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--amber);
}

.page-faq .qa-actions {
  margin: 0;
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.page-faq .qa-actions li {
  font-size: 14px;
  line-height: 1.72;
  color: var(--cool);
}

.page-faq .qa-actions a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 242, 206, 0.4);
}

/* 反馈写法 */
.page-faq .faq-write .grid {
  gap: clamp(24px, 4vw, 48px);
  align-items: start;
}

.page-faq .write-copy h2 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(1.6rem, 3.6vw, 2.4rem);
  line-height: 1.18;
  color: var(--paper);
  margin: 8px 0 14px;
  max-width: 20ch;
}

.page-faq .write-copy > p {
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
  margin: 0 0 20px;
}

.page-faq .write-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  padding: clamp(16px, 2.4vw, 24px);
}

.page-faq .write-panel-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .check-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.page-faq .check-item:first-child {
  border-top: 0;
}

.page-faq .check-label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 11px 0;
  cursor: pointer;
  font-size: 14px;
  line-height: 1.65;
  color: var(--cool);
  border-radius: 6px;
}

.page-faq .check-label > .mono {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--sage);
  padding-top: 2px;
}

.page-faq .check-label > span:nth-child(2) {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .check-box {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 3px;
  border-radius: 4px;
  border: 1px solid var(--line-strong);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .step-check:checked + .check-label .check-box {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .step-check:checked + .check-label {
  color: var(--paper);
}

.page-faq .step-check:focus-visible + .check-label {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .write-hint {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .write-hint a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 242, 206, 0.4);
}

.page-faq .write-figure {
  margin: 0;
  width: 100%;
}

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

.page-faq .write-figure figcaption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--sage);
}

/* 处理时效 */
.page-faq .timing-heading {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(1.5rem, 3.4vw, 2.2rem);
  line-height: 1.2;
  color: var(--paper);
  margin: 8px 0 0;
  max-width: 22ch;
}

.page-faq .timing-grid {
  display: grid;
  gap: 14px;
  margin-top: clamp(20px, 3vw, 30px);
}

.page-faq .timing-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 24px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.page-faq .timing-num {
  font-family: var(--font-mono);
  font-size: clamp(1.5rem, 4vw, 2.1rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .timing-card h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--paper);
}

.page-faq .timing-card p {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--sage);
}

.page-faq .timing-card--rose {
  border-color: rgba(255, 92, 138, 0.35);
}

.page-faq .timing-card--rose .timing-num {
  color: var(--rose);
}

/* 还没解决 */
.page-faq .reach-card {
  position: relative;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  background: linear-gradient(140deg, var(--panel-2) 0%, var(--panel) 58%, #0a1b17 100%);
}

.page-faq .reach-card h2 {
  font-family: var(--font-display);
  font-weight: 900;
  letter-spacing: -0.02em;
  font-size: clamp(1.5rem, 3.6vw, 2.2rem);
  line-height: 1.18;
  color: var(--paper);
  margin: 8px 0 12px;
  max-width: 20ch;
}

.page-faq .reach-intro {
  max-width: 48ch;
  margin: 0 0 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .reach-list {
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .reach-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .reach-key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-faq .reach-value {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.15rem);
  color: var(--paper);
  word-break: break-word;
}

.page-faq .reach-note {
  flex: 1 1 100%;
  font-size: 12px;
  line-height: 1.6;
  color: var(--sage);
}

/* 断点 */
@media (min-width: 700px) {
  .page-faq .timing-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-body {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.85fr);
    grid-template-areas: "main steps";
    align-items: start;
  }

  .page-faq .faq-main {
    grid-area: main;
  }

  .page-faq .faq-steps {
    grid-area: steps;
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-write .grid {
    align-items: center;
  }

  .page-faq .write-copy h2 {
    max-width: 18ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step-check:checked + .step-label .step-dot,
  .page-faq .step-check:checked + .check-label .check-box,
  .page-faq .qa-icon::before,
  .page-faq .qa-icon::after {
    transition: none;
  }
}