.page-faq {
  --faq-body: #C6D5E4;
  --faq-ink-soft: #4A5A70;
  --faq-cut: clamp(12px, 2.2vw, 20px);
  display: block;
  background:
    radial-gradient(1100px 520px at 84% -10%, rgba(38, 224, 230, 0.15), transparent 62%),
    radial-gradient(760px 420px at 2% 6%, rgba(255, 138, 61, 0.10), transparent 58%),
    var(--ink-900);
  color: var(--mist);
}

.page-faq .breadcrumb {
  padding: clamp(14px, 2.4vw, 22px) 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(20px, 3.6vw, 44px) 0 clamp(26px, 4vw, 48px);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 46px);
  align-items: center;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(27px, 6.2vw, 50px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--mist);
  max-width: 14em;
}

.page-faq .faq-hero-lead {
  margin: 16px 0 0;
  max-width: 33em;
  font-size: clamp(14px, 1.7vw, 16px);
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-size: 12.5px;
  color: var(--slate);
}

.page-faq .faq-hero-meta .mono {
  color: var(--cyan);
  font-size: 13px;
  margin-right: 4px;
}

.page-faq .faq-hero-media {
  margin: 0;
  padding: 10px 10px 0;
  background: linear-gradient(150deg, rgba(23, 43, 69, 0.95), rgba(10, 20, 36, 0.9));
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
  box-shadow: 0 24px 60px -34px rgba(38, 224, 230, 0.5);
}

.page-faq .faq-hero-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  aspect-ratio: 11 / 7;
}

.page-faq .faq-hero-media figcaption {
  padding: 10px 2px 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.04em;
  color: var(--slate);
}

/* ---------- 诊断台 ---------- */
.page-faq .faq-desk {
  padding: clamp(26px, 4.4vw, 56px) 0 clamp(10px, 2vw, 22px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-desk-grid {
  display: grid;
  gap: clamp(20px, 3vw, 40px);
}

.page-faq .faq-nav-title {
  margin: 0;
  font-size: clamp(17px, 2.4vw, 20px);
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-nav-hint {
  margin: 6px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-nav {
  display: grid;
  gap: 6px;
  margin-top: 14px;
}

.page-faq .faq-nav-link {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  padding: 11px 12px;
  text-decoration: none;
  color: var(--mist);
  background: rgba(18, 35, 59, 0.7);
  border-left: 3px solid transparent;
  transition: border-color 0.2s var(--ease), background-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-nav-link:hover,
.page-faq .faq-nav-link:focus-visible {
  border-left-color: var(--cyan);
  background: var(--ink-700);
  transform: translateY(-1px);
  outline: none;
}

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

.page-faq .faq-nav-num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--cyan);
  padding-top: 2px;
}

.page-faq .faq-nav-text {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.4;
}

.page-faq .faq-nav-desc {
  display: block;
  margin-top: 3px;
  font-size: 11.5px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--slate);
}

/* ---------- 问答块 ---------- */
.page-faq .qa-block {
  padding: clamp(18px, 2.6vw, 28px) 0;
  border-top: 1px solid var(--line);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.page-faq .qa-block-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}

.page-faq .qa-block-head h2 {
  margin: 0;
  font-size: clamp(20px, 3vw, 27px);
  letter-spacing: -0.01em;
  line-height: 1.25;
  color: var(--mist);
}

.page-faq .qa-block-lead {
  margin: 8px 0 4px;
  max-width: 40em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-body);
}

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

.page-faq .qa-block:first-child .qa:first-of-type {
  border-top: 0;
}

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--mist);
  transition: color 0.2s var(--ease);
}

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

.page-faq .qa summary:hover {
  color: var(--cyan);
}

.page-faq .qa summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .qa-q-mark {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--slate);
  padding-top: 1px;
}

.page-faq .qa[open] summary::after {
  content: "\2212";
  color: var(--cyan);
}

.page-faq .qa-body {
  padding: 0 0 18px 29px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-body);
}

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

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

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

.page-faq .faq-link:hover {
  color: var(--amber);
}

/* 步骤编号 */
.page-faq .steps {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
  display: grid;
  gap: 10px;
}

.page-faq .steps > li {
  counter-increment: step;
  position: relative;
  padding-left: 38px;
}

.page-faq .steps > li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.35em;
  padding: 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan);
  border: 1px solid var(--line-strong);
}

/* ---------- 配置清单卡 ---------- */
.page-faq .check-card {
  margin-top: 18px;
  padding: clamp(16px, 2.6vw, 26px);
  background: var(--paper);
  color: var(--deep-ink);
  clip-path: polygon(0 0, 100% 0, 100% 100%, var(--faq-cut) 100%, 0 calc(100% - var(--faq-cut)));
}

.page-faq .check-card h3 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--deep-ink);
}

.page-faq .check-hint {
  margin: 5px 0 0;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--faq-ink-soft);
}

.page-faq .check-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .check-item {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 11px 0;
  border-bottom: 1px dashed rgba(16, 28, 46, 0.22);
}

.page-faq .check-item:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .check-item input {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  border: 2px solid var(--deep-ink);
  background: transparent;
  cursor: pointer;
  transition: background-color 0.18s var(--ease), border-color 0.18s var(--ease);
}

.page-faq .check-item input:checked {
  background: var(--cyan-dim);
  border-color: var(--cyan-dim);
  box-shadow: inset 0 0 0 2px var(--paper);
}

.page-faq .check-item input:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .check-label {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.5;
  cursor: pointer;
  color: var(--deep-ink);
}

.page-faq .check-detail {
  display: block;
  margin-top: 3px;
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--faq-ink-soft);
}

.page-faq .config-figure {
  margin: 18px 0 6px;
}

.page-faq .config-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 5 / 3;
  border: 1px solid var(--line-strong);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

/* ---------- 客服准备 ---------- */
.page-faq .faq-support {
  padding: clamp(30px, 5vw, 64px) 0 clamp(40px, 6.4vw, 80px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 35, 59, 0.55), rgba(10, 20, 36, 0));
}

.page-faq .support-title {
  margin: 10px 0 0;
  font-size: clamp(21px, 3.4vw, 32px);
  line-height: 1.25;
  letter-spacing: -0.02em;
  color: var(--mist);
  max-width: 22em;
}

.page-faq .support-grid {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .support-lead {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .prep-list {
  margin: 18px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .prep-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 13px 14px;
  background: var(--ink-700);
  border-left: 3px solid var(--amber);
  transition: transform 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .prep-item:hover {
  transform: translateY(-2px);
  background: var(--ink-600);
}

.page-faq .prep-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  padding-top: 2px;
}

.page-faq .prep-text {
  display: block;
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .prep-text em {
  display: block;
  margin-top: 3px;
  font-style: normal;
  font-size: 12.5px;
  font-weight: 400;
  line-height: 1.6;
  color: var(--slate);
}

.page-faq .contact-card {
  padding: clamp(18px, 2.8vw, 28px);
  background: var(--paper);
  color: var(--deep-ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
  align-self: start;
}

.page-faq .contact-card h3 {
  margin: 0;
  font-size: 17px;
  letter-spacing: -0.01em;
  color: var(--deep-ink);
}

.page-faq .contact-intro {
  margin: 7px 0 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

.page-faq .contact-row {
  display: grid;
  gap: 3px;
  padding: 11px 0;
  border-top: 1px dashed rgba(16, 28, 46, 0.22);
}

.page-faq .contact-label {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  color: #5A6A80;
}

.page-faq .contact-value {
  font-size: 14.5px;
  font-weight: 700;
  line-height: 1.55;
  word-break: break-word;
  color: var(--deep-ink);
}

.page-faq .contact-value a {
  color: #0B5B66;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .contact-value a:hover {
  color: #B4501A;
}

.page-faq .contact-note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

.page-faq .contact-btn {
  margin-top: 16px;
  width: 100%;
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .check-item {
    grid-template-columns: 24px minmax(0, 1fr);
  }

  .page-faq .contact-btn {
    width: auto;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-faq .support-grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-desk-grid {
    grid-template-columns: minmax(230px, 258px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-desk-nav {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-faq .qa-body {
    padding-left: 33px;
    padding-right: 12%;
  }

  .page-faq .qa-block-lead {
    padding-right: 8%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-nav-link,
  .page-faq .prep-item,
  .page-faq .qa summary,
  .page-faq .check-item input {
    transition: none;
  }

  .page-faq .faq-nav-link:hover,
  .page-faq .prep-item:hover {
    transform: none;
  }
}
<<<END>>>