.page-faq {
  --faq-line: rgba(166, 255, 244, 0.14);
  --faq-radius: 12px;
  background:
    radial-gradient(880px 420px at 10% -6%, rgba(43, 231, 208, 0.13), transparent 62%),
    radial-gradient(760px 380px at 92% 2%, rgba(255, 181, 71, 0.09), transparent 64%);
}

.page-faq .crumbs {
  margin-top: clamp(16px, 3vw, 26px);
}

.page-faq section[id] {
  scroll-margin-top: 92px;
}

.page-faq h2 {
  margin: 12px 0 14px;
  font-size: clamp(24px, 4.4vw, 34px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 22em;
}

.page-faq h3 {
  margin: 0 0 8px;
  font-size: clamp(15px, 2.2vw, 17px);
  line-height: 1.5;
  color: var(--paper);
}

.page-faq p {
  color: var(--mist);
  line-height: 1.8;
}

.page-faq .faq-lead {
  max-width: 50ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-note {
  margin: 16px 0 0;
  padding-left: 12px;
  border-left: 2px solid rgba(255, 181, 71, 0.55);
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: clamp(20px, 4vw, 40px) clamp(14px, 3vw, 24px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 4vw, 36px);
}

.page-faq .faq-hero h1 {
  margin: 10px 0 16px;
  font-size: clamp(30px, 6.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--paper);
  max-width: 20em;
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--amber);
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  margin: 0 0 20px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--panel);
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 0 100%);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.85);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(7, 20, 38, 0) 48%, rgba(7, 20, 38, 0.58));
}

/* ---------- 页内索引条 ---------- */
.page-faq .anchor-bar {
  display: flex;
  gap: 8px;
  margin-top: clamp(18px, 3vw, 26px);
  padding-bottom: 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .anchor-bar__link {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 7px 14px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .anchor-bar__link:hover,
.page-faq .anchor-bar__link:focus-visible {
  color: var(--ink);
  background: var(--cyan);
  border-color: var(--cyan);
}

/* ---------- 三栏分工 ---------- */
.page-faq .lane-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .lane-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 16px 16px;
  min-height: 176px;
}

.page-faq .lane-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
}

.page-faq .lane-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--amber);
}

.page-faq .lane-card__state {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: rgba(143, 169, 189, 0.8);
}

.page-faq .lane-card--key {
  border-color: rgba(255, 181, 71, 0.42);
  background: linear-gradient(158deg, rgba(255, 181, 71, 0.14), rgba(13, 33, 56, 0.92) 58%);
}

.page-faq .lane-card--key .btn {
  align-self: flex-start;
  margin-top: 4px;
}

.page-faq .lane-card--key .tag {
  align-self: flex-start;
}

/* ---------- 注册排查六步 ---------- */
.page-faq .signup-grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

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

.page-faq .step {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 12px;
  padding: 14px 14px 14px 12px;
  border: 1px solid var(--faq-line);
  border-left: 2px solid rgba(43, 231, 208, 0.45);
  border-radius: 10px;
  background: rgba(13, 33, 56, 0.55);
}

.page-faq .step__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  padding-top: 2px;
}

.page-faq .step__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.page-faq .step__head h3 {
  margin: 0;
}

.page-faq .step__body p {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .step__mark {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: rgba(143, 169, 189, 0.9);
}

.page-faq .step__box {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  margin: 0;
  border: 1px solid rgba(166, 255, 244, 0.34);
  border-radius: 4px;
  background: rgba(7, 20, 38, 0.78);
  cursor: pointer;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.page-faq .step__box:hover {
  border-color: var(--cyan);
}

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

.page-faq .step__box:checked {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .step__box:checked::after {
  content: "";
  position: absolute;
  left: 5px;
  top: 1px;
  width: 5px;
  height: 10px;
  border-right: 2px solid var(--ink);
  border-bottom: 2px solid var(--ink);
  transform: rotate(40deg);
}

.page-faq .step__mark-text--on {
  display: none;
}

.page-faq .step__box:checked ~ .step__mark-text--off {
  display: none;
}

.page-faq .step__box:checked ~ .step__mark-text--on {
  display: inline;
  color: var(--green);
}

/* ---------- iOS 适配 ---------- */
.page-faq .ios-grid {
  display: grid;
  gap: clamp(20px, 3vw, 34px);
}

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

.page-faq .check-list li {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  font-size: 14.5px;
  line-height: 1.65;
  color: var(--paper);
}

.page-faq .check-list__dot {
  width: 12px;
  height: 12px;
  margin-top: 5px;
  border: 1px solid rgba(166, 255, 244, 0.4);
  border-radius: 50%;
}

.page-faq .check-list__dot--ok {
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(43, 231, 208, 0.16);
}

.page-faq .faq-figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  overflow: hidden;
  background: var(--lift);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.82);
}

/* ---------- 导出 ---------- */
.page-faq .export-grid {
  display: grid;
  gap: 12px;
  margin-top: clamp(18px, 3vw, 26px);
}

.page-faq .export-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 16px;
}

.page-faq .export-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
}

.page-faq .export-card__no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .export-foot {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .export-foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 231, 208, 0.4);
}

.page-faq .export-foot a:hover,
.page-faq .export-foot a:focus-visible {
  color: var(--cyan-line);
  border-bottom-color: var(--cyan-line);
}

/* ---------- 订阅答疑 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
  margin-top: clamp(18px, 3vw, 26px);
  max-width: 82ch;
}

.page-faq .qa {
  border: 1px solid var(--faq-line);
  border-radius: 10px;
  background: rgba(13, 33, 56, 0.5);
  overflow: hidden;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .qa[open] {
  border-color: rgba(43, 231, 208, 0.4);
  background: rgba(22, 51, 79, 0.62);
}

.page-faq .qa summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
}

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

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

.page-faq .qa[open] summary::after {
  content: "\2212";
}

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

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--amber);
}

.page-faq .qa__q {
  min-width: 0;
}

.page-faq .qa__body {
  padding: 0 16px 16px;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .qa__body p + p {
  margin-top: 10px;
}

.page-faq .qa__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 231, 208, 0.4);
}

.page-faq .qa__body a:hover,
.page-faq .qa__body a:focus-visible {
  color: var(--cyan-line);
  border-bottom-color: var(--cyan-line);
}

/* ---------- 联系支持 ---------- */
.page-faq .contact-block {
  display: grid;
  gap: clamp(18px, 3vw, 32px);
  padding: clamp(20px, 3.6vw, 34px);
}

.page-faq .contact-block__copy p {
  margin: 0 0 16px;
  font-size: 14.5px;
  line-height: 1.85;
}

.page-faq .contact-block__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 14px;
}

.page-faq .contact-block__fine {
  margin: 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: rgba(143, 169, 189, 0.9);
}

.page-faq .contact-block__fine a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 231, 208, 0.4);
}

.page-faq .contact-block__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  align-content: start;
}

.page-faq .contact-block__list li {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 12px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .contact-block__list li:first-child {
  padding-top: 0;
}

.page-faq .contact-block__label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--amber);
}

.page-faq .contact-block__value {
  color: var(--paper);
  font-size: 14px;
  line-height: 1.7;
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .lane-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .lane-card--key {
    grid-column: 1 / -1;
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
    gap: clamp(26px, 4vw, 48px);
  }

  .page-faq .signup-grid {
    grid-template-columns: minmax(0, 0.78fr) minmax(0, 1.22fr);
    align-items: start;
    gap: clamp(24px, 3.4vw, 44px);
  }

  .page-faq .ios-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.85fr);
    align-items: center;
    gap: clamp(24px, 3.6vw, 46px);
  }

  .page-faq .lane-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: stretch;
  }

  .page-faq .lane-card--key {
    grid-column: auto;
  }

  .page-faq .contact-block {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-faq .export-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .page-faq .faq-hero__actions .btn,
  .page-faq .contact-block__actions .btn {
    flex: 1 1 100%;
    text-align: center;
  }

  .page-faq .step {
    grid-template-columns: 1fr;
    gap: 6px;
  }

  .page-faq .step__no {
    padding-top: 0;
  }

  .page-faq .contact-block__list li {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
  }
}
<<<END>>>