.page-faq {
  --faq-hair: rgba(232, 255, 249, 0.12);
  --faq-glow: rgba(31, 245, 208, 0.28);
  --faq-soft: rgba(11, 27, 42, 0.55);
  display: block;
  padding-block: clamp(22px, 4vw, 44px) clamp(48px, 8vw, 96px);
  background:
    radial-gradient(120% 70% at 85% -10%, rgba(11, 27, 42, 0.95), transparent 62%),
    radial-gradient(90% 60% at 0% 30%, rgba(18, 59, 46, 0.55), transparent 70%),
    var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  overflow-x: hidden;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq h1 {
  font-size: clamp(2.1rem, 6.4vw, 3.7rem);
  line-height: 1.08;
  margin: 12px 0 18px;
}

.page-faq h2 {
  font-size: clamp(1.5rem, 3.6vw, 2.15rem);
  line-height: 1.2;
  margin: 0;
}

.page-faq h3 {
  font-size: 1.05rem;
  line-height: 1.5;
  margin: 0 0 8px;
}

.page-faq p {
  margin: 0 0 14px;
}

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

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

/* 面包屑间隔 */
.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: var(--step);
  align-items: end;
  padding-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-hero .eyebrow {
  color: var(--cyan);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 12px;
  font-family: var(--font-mono);
  margin: 0;
}

.page-faq .faq-hero .lede {
  font-size: 1.06rem;
  color: var(--paper);
  opacity: 0.92;
  max-width: 42ch;
}

.page-faq .faq-hero-actions {
  gap: 12px;
  margin: 20px 0 14px;
  flex-wrap: wrap;
}

.page-faq .faq-hero-note {
  font-size: 15px;
  max-width: 40ch;
}

.page-faq .faq-hero-figure {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--faq-hair);
  box-shadow: var(--shadow);
  margin: 0;
  background: linear-gradient(160deg, var(--blue-900), var(--pitch-700));
}

.page-faq .faq-hero-figure img {
  width: 100%;
  object-fit: cover;
  filter: saturate(0.95) contrast(1.05);
}

/* 面板通用 */
.page-faq .panel {
  margin-top: clamp(20px, 3.4vw, 36px);
  padding: clamp(20px, 3.2vw, 40px);
  background: linear-gradient(170deg, rgba(10, 31, 25, 0.94), rgba(5, 13, 11, 0.96));
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-soft);
  scroll-margin-top: 24px;
}

.page-faq .panel-index {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--amber);
  letter-spacing: 0.1em;
  font-size: 13px;
}

.page-faq .panel-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 14px;
  border-bottom: 1px solid var(--faq-hair);
  padding-bottom: 12px;
  flex-wrap: wrap;
}

/* 分类跳转 */
.page-faq .faq-chips {
  margin-top: 18px;
  gap: 10px;
  flex-wrap: wrap;
}

.page-faq .faq-chips .chip {
  font-size: 14px;
  text-decoration: none;
  border: 1px solid var(--faq-hair);
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-chips .chip:hover,
.page-faq .faq-chips .chip:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(31, 245, 208, 0.08);
}

/* 费用双栏信息块 */
.page-faq .fee-blocks {
  display: grid;
  gap: 16px;
  margin: 20px 0 8px;
}

.page-faq .fee-card {
  padding: clamp(18px, 2.6vw, 26px);
  background: linear-gradient(150deg, rgba(18, 59, 46, 0.9), rgba(11, 27, 42, 0.92));
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-md);
}

.page-faq .fee-card .sector-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
  text-transform: uppercase;
  margin: 0 0 10px;
  display: block;
}

.page-faq .fee-card h3 {
  color: var(--cyan);
  margin-bottom: 10px;
}

.page-faq .fee-card p {
  color: var(--muted);
  font-size: 16px;
}

/* 手风琴问答 */
.page-faq .faq-list {
  display: grid;
  gap: 0;
  margin-top: 22px;
}

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

.page-faq .faq-item:last-child {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0 16px 16px;
  border-left: 2px solid transparent;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

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

.page-faq .faq-item summary::after {
  content: "＋";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.4;
  color: var(--muted);
  flex: 0 0 auto;
  transition: color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  content: "−";
  color: var(--cyan);
}

.page-faq .faq-item summary:hover,
.page-faq .faq-item summary:focus-visible {
  background: rgba(31, 245, 208, 0.05);
}

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

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

.page-faq .faq-q {
  font-size: 1.02rem;
  font-weight: 700;
  margin: 0;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-a {
  padding: 2px 0 20px 16px;
  border-left: 2px solid var(--faq-glow);
  color: var(--muted);
  font-size: 16px;
}

.page-faq .faq-a p {
  margin: 0;
}

.page-faq .inline-link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .inline-link:hover,
.page-faq .inline-link:focus-visible {
  color: var(--paper);
}

/* 步骤 */
.page-faq .faq-steps {
  list-style: none;
  padding: 0;
  margin: 22px 0 6px;
  display: grid;
  gap: 18px;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.page-faq .faq-steps h3 {
  color: var(--paper);
  margin-bottom: 6px;
}

.page-faq .faq-steps p {
  color: var(--muted);
  font-size: 16px;
  margin: 0;
}

.page-faq .step-num {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--faq-glow);
  background: rgba(31, 245, 208, 0.08);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 15px;
}

/* 设备示意 */
.page-faq .device-figure {
  margin: 20px 0 4px;
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--faq-hair);
  background: linear-gradient(120deg, var(--blue-900), var(--ink-800));
}

.page-faq .device-figure img {
  width: 100%;
  object-fit: cover;
}

.page-faq .figure-caption {
  padding: 12px 16px;
  font-size: 14px;
  color: var(--muted);
  border-top: 1px solid var(--faq-hair);
}

/* 联系支持 */
.page-faq .faq-support-grid {
  display: grid;
  gap: var(--step);
  margin-top: 20px;
}

.page-faq .support-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: grid;
  gap: 12px;
}

.page-faq .support-list li {
  position: relative;
  padding-left: 22px;
  color: var(--muted);
  font-size: 16px;
}

.page-faq .support-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 10px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .support-contact {
  padding: clamp(18px, 2.6vw, 26px);
  border-radius: var(--r-md);
  border: 1px solid var(--faq-hair);
  background: var(--faq-soft);
}

.page-faq .support-contact .sector-tag {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--amber);
  margin: 0 0 12px;
  display: block;
}

.page-faq .support-contact .contact-list {
  list-style: none;
  padding: 0;
  margin: 0 0 16px;
  display: grid;
  gap: 10px;
}

.page-faq .support-contact .contact-line {
  display: grid;
  gap: 2px;
}

.page-faq .support-contact .contact-key {
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  font-family: var(--font-mono);
}

.page-faq .support-contact .contact-value {
  color: var(--paper);
  font-size: 16px;
  word-break: break-word;
}

.page-faq .support-contact .muted {
  font-size: 15px;
  color: var(--muted);
  margin-bottom: 10px;
}

@media (min-width: 700px) {
  .page-faq .fee-blocks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px 28px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.85fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-support-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-faq .faq-item summary {
    padding: 18px 0 18px 20px;
  }

  .page-faq .faq-a {
    padding-left: 20px;
  }
}

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