.page-faq {
  --faq-radius: var(--radius-md);
  --faq-line: var(--line-green);
  padding-bottom: clamp(40px, 6vw, 88px);
  color: var(--text-primary);
}

.page-faq .breadcrumb {
  padding-top: clamp(16px, 3vw, 28px);
}

/* 首屏 */
.page-faq .faq-intro {
  padding: clamp(20px, 4vw, 40px) 0 0;
}

.page-faq .faq-intro h1 {
  margin: 12px 0 0;
  font-family: var(--font-head);
  font-size: clamp(30px, 6.2vw, 56px);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.01em;
  max-width: 20ch;
  color: var(--text-primary);
}

.page-faq .faq-lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* 快速定位 chips */
.page-faq .faq-quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .faq-chip {
  font-family: var(--font-body);
  font-size: 13.5px;
  line-height: 1;
  padding: 10px 15px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--faq-line);
  background: var(--surface-moss);
  color: var(--text-secondary);
  cursor: pointer;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-faq .faq-chip:hover {
  border-color: var(--accent-cyan-dim);
  color: var(--text-primary);
}

.page-faq .faq-chip[aria-pressed="true"] {
  background: var(--accent-cyan);
  border-color: var(--accent-cyan);
  color: var(--ink-on-accent);
  font-weight: 600;
}

.page-faq .faq-chip:focus-visible {
  outline: 2px solid var(--focus-glow);
  outline-offset: 2px;
}

/* 概览数据 */
.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  margin-top: clamp(22px, 3.4vw, 34px);
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-stat {
  padding: 14px 14px 16px 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-stat-num {
  font-family: var(--font-head);
  font-size: clamp(22px, 3vw, 28px);
  font-weight: 700;
  color: var(--accent-cyan);
  letter-spacing: 0.01em;
}

.page-faq .faq-stat-label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--text-secondary);
}

/* 兼容提示条 */
.page-faq .faq-note {
  margin-top: var(--gap-md);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--accent-cyan-dim);
  border-radius: var(--faq-radius);
  background: var(--bg-carbon);
}

.page-faq .faq-note > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  padding: 14px 18px;
}

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

.page-faq .faq-note > summary:focus-visible {
  outline: 2px solid var(--focus-glow);
  outline-offset: 2px;
}

.page-faq .faq-note-label {
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.page-faq .faq-note-title {
  font-size: 14px;
  color: var(--text-primary);
}

.page-faq .faq-note-body {
  padding: 0 18px 16px;
  border-top: 1px solid var(--faq-line);
  margin-top: 0;
  padding-top: 14px;
}

.page-faq .faq-note-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--text-secondary);
  max-width: 68ch;
}

/* 双栏骨架 */
.page-faq .faq-layout {
  margin-top: clamp(26px, 4vw, 48px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 44px);
}

/* 左侧目录 */
.page-faq .faq-dir {
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: var(--surface-moss);
  padding: 16px;
  align-self: start;
}

.page-faq .faq-dir-title {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.page-faq .faq-dir-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-dir-link {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.page-faq .faq-dir-link:hover {
  background: var(--surface-raised);
  border-left-color: var(--accent-cyan);
  color: var(--text-primary);
}

.page-faq .faq-dir-link:focus-visible {
  outline: 2px solid var(--focus-glow);
  outline-offset: 2px;
}

.page-faq .faq-dir-num {
  font-size: 11.5px;
  color: var(--accent-cyan-dim);
}

.page-faq .faq-dir-card {
  margin-top: 16px;
  padding: 14px;
  border-radius: var(--radius-sm);
  background: var(--bg-carbon);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-dir-card p {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--text-secondary);
}

.page-faq .faq-dir-card p.mono {
  color: var(--accent-amber);
  letter-spacing: 0.06em;
  margin-bottom: 6px;
}

.page-faq .faq-dir-card .btn {
  margin-top: 12px;
  width: 100%;
  text-align: center;
}

/* 问答区块 */
.page-faq .faq-block {
  padding-top: clamp(22px, 3.4vw, 36px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-block:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq .faq-block + .faq-block {
  margin-top: clamp(28px, 4vw, 52px);
}

.page-faq .faq-block-index {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-amber);
}

.page-faq .faq-block-head h2 {
  margin: 8px 0 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

.page-faq .faq-block-lead {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* 图 */
.page-faq .faq-figure {
  margin: clamp(18px, 3vw, 26px) 0 0;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: linear-gradient(150deg, var(--surface-moss), var(--bg-carbon));
  position: relative;
}

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

.page-faq .faq-figure figcaption,
.page-faq .faq-contact-figure figcaption {
  padding: 10px 14px 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-secondary);
  border-top: 1px solid var(--faq-line);
}

/* 三步流程 */
.page-faq .faq-steps {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-step {
  position: relative;
  padding: 14px 16px 16px;
  border-radius: var(--radius-sm);
  background: var(--surface-moss);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-step-num {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--accent-cyan);
}

.page-faq .faq-step h3 {
  margin: 6px 0 0;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.page-faq .faq-step p {
  margin: 6px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--text-secondary);
}

/* 折叠问答 */
.page-faq .faq-list {
  margin-top: clamp(18px, 3vw, 26px);
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: var(--surface-moss);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--accent-cyan-dim);
  background: var(--surface-raised);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: var(--accent-cyan-dim);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  padding: 15px 16px;
}

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--focus-glow);
  outline-offset: 2px;
  border-radius: var(--faq-radius);
}

.page-faq .faq-q {
  flex: 1 1 60%;
  min-width: 0;
  font-size: 15px;
  line-height: 1.55;
  font-weight: 500;
  color: var(--text-primary);
}

.page-faq .faq-item > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--accent-cyan);
  margin-left: auto;
}

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

.page-faq .faq-a {
  padding: 0 16px 16px;
  border-top: 1px solid var(--faq-line);
  margin-top: 2px;
  padding-top: 12px;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 66ch;
  font-size: 14px;
  line-height: 1.78;
  color: var(--text-secondary);
}

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

.page-faq .faq-a a:focus-visible {
  outline: 2px solid var(--focus-glow);
  outline-offset: 2px;
}

/* 联系支持 */
.page-faq .faq-contact {
  margin-top: clamp(40px, 6vw, 76px);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3.4vw, 40px);
  padding: clamp(20px, 4vw, 40px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--faq-line);
  background:
    radial-gradient(120% 90% at 0% 0%, var(--surface-raised), transparent 62%),
    var(--bg-carbon);
}

.page-faq .faq-contact-kicker {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-amber);
}

.page-faq .faq-contact-main h2 {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(22px, 3.8vw, 34px);
  font-weight: 700;
  line-height: 1.18;
  color: var(--text-primary);
}

.page-faq .faq-contact-lead {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.page-faq .faq-contact-list {
  list-style: none;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-contact-item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 16px;
  align-items: baseline;
  justify-content: space-between;
  padding: 11px 0;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-contact-label {
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--accent-cyan-dim);
  min-width: 5.5em;
}

.page-faq .faq-contact-value {
  font-size: 14px;
  color: var(--text-primary);
  word-break: break-word;
}

.page-faq .faq-contact-hint {
  margin: 16px 0 0;
  max-width: 64ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--text-secondary);
}

.page-faq .faq-contact-hint a {
  color: var(--accent-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-contact-hint a:focus-visible {
  outline: 2px solid var(--focus-glow);
  outline-offset: 2px;
}

.page-faq .faq-contact-figure {
  margin: 0;
  align-self: start;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, var(--surface-moss), var(--bg-deep));
}

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

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

  .page-faq .faq-stat {
    padding-left: 16px;
    border-left: 1px solid var(--faq-line);
  }

  .page-faq .faq-stat:first-child {
    padding-left: 0;
    border-left: 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(200px, 248px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-dir {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(220px, 268px) minmax(0, 1fr);
    column-gap: clamp(32px, 4vw, 64px);
  }
}

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

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