.page-faq {
  --faq-muted: #43587f;
  --faq-line-soft: rgba(18, 41, 92, 0.18);
  --faq-slant: clamp(28px, 4vw, 56px);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  background-color: var(--bg);
  background-image: repeating-linear-gradient(115deg, rgba(43, 243, 228, 0.05) 0 2px, transparent 2px 18px);
  color: var(--ink);
  padding: clamp(20px, 3vw, 32px) 0 clamp(72px, 10vw, 132px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 40px);
  margin-top: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-size: clamp(30px, 5.2vw, 60px);
  line-height: 1.08;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq .faq-hero .lead {
  margin: 18px 0 0;
  max-width: 34em;
  color: var(--ink-soft);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-faq .faq-hero__panel {
  border: 3px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
  padding: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-hero__panel-label {
  margin: 0 0 6px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-hero__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-hero__list li + li {
  border-top: 2px solid var(--line);
}

.page-faq .faq-hero__list a {
  display: flex;
  gap: 12px;
  padding: 12px 0;
  color: var(--ink);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  line-height: 1.6;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-hero__list a:hover,
.page-faq .faq-hero__list a:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-hero__idx {
  flex: 0 0 auto;
  padding-top: 2px;
  font-size: 13px;
  color: var(--orange);
}

.page-faq .faq-hero__note {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-soft);
}

/* ---------- 浅底长阅读区 ---------- */
.page-faq .faq-body {
  background: var(--light);
  color: var(--panel);
  margin-top: calc(-1 * var(--faq-slant));
  padding: clamp(64px, 9vw, 104px) 0 clamp(56px, 8vw, 104px);
  clip-path: polygon(0 0, 100% var(--faq-slant), 100% 100%, 0 100%);
}

.page-faq .faq-layout {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
}

.page-faq .faq-side__label {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--faq-muted);
}

.page-faq .faq-cats {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 3px solid var(--panel);
}

.page-faq .faq-cats li {
  border-bottom: 2px solid var(--faq-line-soft);
}

.page-faq .faq-cats a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 4px;
  color: var(--panel);
  text-decoration: none;
  font-weight: 700;
  font-size: 15px;
  border-left: 4px solid transparent;
  transition: border-color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-cats a:hover,
.page-faq .faq-cats a:focus-visible {
  border-left-color: var(--cyan-deep);
  padding-left: 10px;
}

.page-faq .faq-cat__count {
  flex: 0 0 auto;
  background: var(--panel);
  color: var(--cyan);
  font-size: 12px;
  font-weight: 700;
  padding: 1px 7px;
}

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

.page-faq .faq-cat {
  scroll-margin-top: 24px;
  margin-bottom: clamp(48px, 6vw, 76px);
}

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

.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 10px;
  margin-bottom: 20px;
  border-bottom: 3px solid var(--panel);
}

.page-faq .faq-cat__num {
  flex: 0 0 auto;
  background: var(--cyan);
  color: #04121f;
  font-size: 13px;
  font-weight: 700;
  padding: 3px 8px;
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: clamp(20px, 2.6vw, 30px);
  font-weight: 900;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--panel);
}

.page-faq .faq-cat__split {
  display: grid;
  gap: 18px;
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-item {
  background: #ffffff;
  border: 3px solid var(--panel);
  box-shadow: var(--shadow-hard-sm);
}

.page-faq .faq-item + .faq-item {
  margin-top: 14px;
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--panel);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 3px solid var(--panel);
  background: var(--light);
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--panel);
}

.page-faq .faq-item__sign::before {
  left: 3px;
  right: 3px;
  top: 50%;
  height: 3px;
  margin-top: -1.5px;
}

.page-faq .faq-item__sign::after {
  top: 3px;
  bottom: 3px;
  left: 50%;
  width: 3px;
  margin-left: -1.5px;
}

.page-faq .faq-item[open] > summary {
  background: var(--panel);
  color: var(--ink);
}

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

.page-faq .faq-item[open] .faq-item__sign::after {
  display: none;
}

.page-faq .faq-item__body {
  padding: 16px;
  border-top: 3px solid var(--panel);
  background: #ffffff;
  color: var(--panel);
}

.page-faq .faq-item__body p {
  max-width: 38em;
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
}

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

.page-faq .faq-item__note {
  font-size: 13.5px;
  color: var(--faq-muted);
}

.page-faq .faq-steps {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  counter-reset: step;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-size: 15px;
  line-height: 1.7;
  counter-increment: step;
}

.page-faq .faq-steps li::before {
  content: counter(step, decimal-leading-zero);
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  background: var(--cyan);
  color: #04121f;
  padding: 2px 6px;
}

.page-faq .faq-item[open] .faq-steps li::before {
  animation: faq-step-in 220ms var(--ease) both;
}

.page-faq .faq-steps li:nth-child(2)::before {
  animation-delay: 60ms;
}

.page-faq .faq-steps li:nth-child(3)::before {
  animation-delay: 120ms;
}

.page-faq .faq-steps li:nth-child(4)::before {
  animation-delay: 180ms;
}

.page-faq .faq-steps li:nth-child(5)::before {
  animation-delay: 240ms;
}

@keyframes faq-step-in {
  from {
    opacity: 0;
    transform: translateX(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-more {
  display: inline-block;
  margin-top: 4px;
  color: var(--panel);
  font-weight: 700;
  font-size: 14px;
  text-decoration: none;
  border-bottom: 3px solid var(--cyan-deep);
}

.page-faq .faq-more:hover,
.page-faq .faq-more:focus-visible {
  background: var(--cyan);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: 3px solid var(--panel);
  box-shadow: var(--shadow-hard-sm);
  background: #ffffff;
}

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

.page-faq .faq-figure__caption {
  padding: 10px 12px;
  border-top: 3px solid var(--panel);
  background: var(--light);
  font-size: 13px;
  line-height: 1.65;
  color: var(--faq-muted);
}

.page-faq .faq-figure--wide {
  margin: clamp(24px, 4vw, 40px) 0 0;
}

/* ---------- 排查清单 ---------- */
.page-faq .faq-check {
  margin-top: 6px;
  padding: 16px;
  border: 3px solid var(--panel);
  box-shadow: var(--shadow-hard-sm);
  background: var(--light);
}

.page-faq .faq-check__list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: remaining;
}

.page-faq .faq-check__list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 2px dashed var(--faq-line-soft);
}

.page-faq .faq-check__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-check__list li:has(input:not(:checked)) {
  counter-increment: remaining;
}

.page-faq .faq-check__list input {
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  border: 3px solid var(--panel);
  background: #ffffff;
  cursor: pointer;
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-check__list input:checked {
  background: var(--cyan);
  box-shadow: inset 0 0 0 3px #ffffff;
}

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

.page-faq .faq-check__list label {
  cursor: pointer;
  font-size: 15px;
  line-height: 1.7;
  color: var(--panel);
}

.page-faq .faq-check__progress {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 3px solid var(--panel);
  font-size: 13px;
  color: var(--faq-muted);
}

.page-faq .faq-check__count {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-check__count::after {
  content: counter(remaining);
}

/* ---------- 收尾行动带 ---------- */
.page-faq .faq-cta {
  background: var(--bg);
  color: var(--ink);
  margin-top: calc(-1 * clamp(24px, 3vw, 40px));
  padding: clamp(64px, 9vw, 108px) 0 clamp(56px, 8vw, 96px);
  clip-path: polygon(0 clamp(24px, 3vw, 40px), 100% 0, 100% 100%, 0 100%);
}

.page-faq .faq-cta__inner {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 40px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--ink);
}

.page-faq .faq-cta__text {
  max-width: 40em;
  margin: 12px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-cta__links {
  margin: 12px 0 0;
  font-size: 14px;
}

.page-faq .faq-cta__links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 2px solid var(--line);
}

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

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .faq-cta__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-side {
    position: sticky;
    top: 24px;
    align-self: start;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-cat__split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 250px);
    align-items: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-steps li::before {
    animation: none;
  }

  .page-faq .faq-cats a,
  .page-faq .faq-hero__list a,
  .page-faq .faq-check__list input {
    transition: none;
  }
}
<<<END>>>