.page-faq {
  --faq-panel: #0B2A22;
  --faq-glow: rgba(53, 242, 200, 0.14);
}

/* 首屏 */
.page-faq .kb-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 54px) 0 clamp(22px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
  background: radial-gradient(120% 140% at 84% 6%, rgba(25, 216, 232, 0.10), transparent 62%);
}

.page-faq .kb-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 72px 72px;
  opacity: 0.28;
  pointer-events: none;
  -webkit-mask-image: radial-gradient(120% 100% at 10% 0%, #000 22%, transparent 78%);
  mask-image: radial-gradient(120% 100% at 10% 0%, #000 22%, transparent 78%);
}

.page-faq .kb-hero-inner {
  position: relative;
}

.page-faq .kb-kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-faq .kb-kicker-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--faq-glow);
}

.page-faq .kb-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.1rem, 7vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--paper);
  max-width: 20ch;
}

.page-faq .kb-title em {
  display: block;
  font-style: normal;
  color: var(--cyan);
}

.page-faq .kb-lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .kb-hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

/* 布局：左索引 右内容 */
.page-faq .kb-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 4vw, 44px);
  padding-block: clamp(24px, 4vw, 44px) clamp(40px, 7vw, 88px);
}

.page-faq .kb-index-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

.page-faq .kb-index-list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 10px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .kb-index-list::-webkit-scrollbar {
  height: 4px;
}

.page-faq .kb-index-list::-webkit-scrollbar-thumb {
  background: var(--line);
  border-radius: 2px;
}

.page-faq .kb-index-link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  flex: 0 0 auto;
  padding: 9px 13px;
  border: 1px solid var(--line);
  color: var(--mist);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.2;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .kb-index-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .kb-index-link:hover,
.page-faq .kb-index-link:focus-visible {
  color: var(--paper);
  border-color: var(--cyan);
  background: rgba(53, 242, 200, 0.08);
  outline: none;
}

.page-faq .kb-main {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
}

.page-faq .kb-sec {
  scroll-margin-top: calc(var(--header-h) + 24px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

.page-faq .kb-main .kb-sec:first-child {
  border-top: none;
  padding-top: 0;
}

.page-faq .kb-sec-head {
  margin-bottom: 18px;
}

.page-faq .kb-sec-num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .kb-h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.32rem, 3.4vw, 1.9rem);
  line-height: 1.28;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .kb-sec-lead {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .kb-sec-lead--tight {
  margin-top: 16px;
}

.page-faq .kb-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 242, 200, 0.4);
}

.page-faq .kb-link:hover,
.page-faq .kb-link:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
  outline: none;
}

.page-faq .kb-note {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* 步骤卡 */
.page-faq .kb-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-step {
  position: relative;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  background: var(--faq-panel);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 0 100%);
}

.page-faq .kb-step:first-child {
  border-color: rgba(53, 242, 200, 0.42);
}

.page-faq .kb-step-num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .kb-step-title {
  margin: 8px 0 0;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .kb-step-text {
  margin: 6px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

/* 图片 */
.page-faq .kb-figure {
  margin: 18px 0 0;
}

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

.page-faq .kb-cap {
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

/* 提示卡 */
.page-faq .kb-tip {
  margin-top: 16px;
  padding: 15px 17px;
  border-left: 2px solid var(--orange);
  background: rgba(255, 107, 44, 0.07);
}

.page-faq .kb-tip-title {
  margin: 0 0 6px;
  font-size: 15px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .kb-tip-text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 问答折叠 */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
}

.page-faq .qa-item {
  border: 1px solid var(--line);
  background: var(--faq-panel);
  transition: border-color 0.2s var(--ease);
}

.page-faq .qa-item[open] {
  border-color: rgba(53, 242, 200, 0.45);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 17px;
  list-style: none;
  cursor: pointer;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--paper);
}

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

.page-faq .qa-q:hover,
.page-faq .qa-q:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .qa-qnum {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--signal);
  padding-top: 3px;
  flex: 0 0 auto;
}

.page-faq .qa-mark {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-left: auto;
  margin-top: 4px;
  transition: transform 0.25s var(--ease);
}

.page-faq .qa-mark::before,
.page-faq .qa-mark::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  border-radius: 1px;
}

.page-faq .qa-mark::before {
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .qa-mark::after {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa-item[open] .qa-mark {
  transform: rotate(45deg);
}

.page-faq .qa-a {
  padding: 13px 17px 16px;
  border-top: 1px dashed var(--line);
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .kb-inline-cta {
  margin: 18px 0 0;
}

/* 统计术语 */
.page-faq .kb-terms {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .kb-term {
  padding: 14px 16px;
  border-left: 2px solid var(--signal);
  background: var(--ink-3);
}

.page-faq .kb-term-name {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--signal);
}

.page-faq .kb-term-desc {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 对照表补充 */
.page-faq .compare-table th[scope="row"] {
  color: var(--paper);
  font-weight: 700;
  text-align: left;
}

/* 客服准备 */
.page-faq .kb-prep {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .kb-prep-item {
  padding-top: 12px;
  border-top: 2px solid var(--orange);
}

.page-faq .kb-prep-name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .kb-prep-text {
  margin: 7px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .kb-contact {
  position: relative;
  margin-top: 20px;
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid rgba(53, 242, 200, 0.32);
  background: var(--faq-panel);
}

.page-faq .kb-contact::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: linear-gradient(180deg, var(--cyan), var(--orange));
}

.page-faq .kb-contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .kb-contact-label {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.page-faq .kb-contact-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 2vw, 17px);
  font-weight: 600;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .kb-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .kb-copybtn {
  padding: 10px 16px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  color: var(--ink);
  background: var(--cyan);
  border: 1px solid var(--cyan);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .kb-copybtn:hover,
.page-faq .kb-copybtn:focus-visible {
  background: transparent;
  color: var(--cyan);
  outline: none;
  box-shadow: 0 0 0 2px var(--faq-glow);
}

.page-faq .kb-contact-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* 媒体查询：平板及以上 */
@media (min-width: 720px) {
  .page-faq .kb-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

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

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

/* 媒体查询：桌面侧栏索引 */
@media (min-width: 1024px) {
  .page-faq .kb-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .kb-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .kb-index-list {
    flex-direction: column;
    overflow: visible;
    padding: 0;
    gap: 2px;
  }

  .page-faq .kb-index-link {
    white-space: normal;
    border: none;
    border-left: 2px solid transparent;
    padding: 9px 0 9px 14px;
  }

  .page-faq .kb-index-link:hover,
  .page-faq .kb-index-link:focus-visible {
    border-left-color: var(--cyan);
    background: transparent;
  }
}

/* 减少动态 */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-mark,
  .page-faq .qa-item,
  .page-faq .kb-index-link,
  .page-faq .kb-copybtn {
    transition: none;
  }
}
<<<END>>>