.page-faq {
  --faq-line-dark: 1px solid var(--navy-600);
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.page-faq p {
  margin: 0;
}

.page-faq .mono {
  font-family: var(--font-mono);
  letter-spacing: 0.06em;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--header-h) + 40px);
  background: var(--navy-900);
  color: var(--ivory);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--hairline) 1px, transparent 1px),
    linear-gradient(to bottom, var(--hairline) 1px, transparent 1px);
  background-size: 88px 88px;
  opacity: 0.35;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-bottom: 0;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 26px;
  color: var(--on-dark-faint);
  font-size: 13px;
}

.page-faq .breadcrumb a {
  color: var(--amber-light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease);
}

.page-faq .breadcrumb a:hover {
  border-bottom-color: var(--amber-light);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-bottom: 44px;
}

.page-faq .eyebrow {
  margin-bottom: 16px;
  color: var(--amber);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
}

.page-faq .faq-hero h1 {
  font-size: clamp(30px, 6.2vw, 56px);
  line-height: 1.18;
  color: var(--paper);
}

.page-faq .faq-hero__intro {
  max-width: 54ch;
  margin-top: 20px;
  color: var(--on-dark);
  font-size: clamp(15px, 1.5vw, 17px);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-meter {
  border: var(--faq-line-dark);
  background: var(--navy-800);
}

.page-faq .faq-meter__row {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 18px;
  border-bottom: var(--faq-line-dark);
}

.page-faq .faq-meter__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-meter__num {
  flex: 0 0 auto;
  min-width: 62px;
  color: var(--amber-light);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
}

.page-faq .faq-meter__label {
  color: var(--on-dark-dim);
  font-size: 13px;
  line-height: 1.5;
}

.page-faq .faq-index {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  border-top: var(--faq-line-dark);
  background: var(--navy-600);
}

.page-faq .faq-index__item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 14px;
  background: var(--navy-900);
  color: var(--on-dark);
  text-decoration: none;
  font-size: 14px;
  transition: background var(--ease), color var(--ease);
}

.page-faq .faq-index__no {
  color: var(--amber);
  font-size: 12px;
}

.page-faq .faq-index__item:hover,
.page-faq .faq-index__item:focus-visible {
  background: var(--navy-800);
  color: var(--amber-light);
}

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

/* ---------- 通用章节 ---------- */

.page-faq .faq-section {
  padding: clamp(52px, 8vw, 104px) 0;
}

.page-faq .faq-section--paper {
  background: var(--paper);
  color: var(--ink);
}

.page-faq .faq-section--ivory {
  background: var(--ivory);
  color: var(--ink);
}

.page-faq .faq-section--dark {
  background: var(--navy-900);
  color: var(--ivory);
}

.page-faq .faq-section--teal {
  background: var(--teal-deep);
  color: var(--paper);
}

.page-faq .faq-section--wine {
  background: var(--wine);
  color: var(--ivory);
}

.page-faq .faq-head {
  display: grid;
  gap: 14px;
  max-width: 780px;
  margin-bottom: clamp(28px, 4vw, 48px);
}

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

.page-faq .faq-head h2 {
  font-size: clamp(24px, 3.6vw, 36px);
  line-height: 1.28;
}

.page-faq .faq-head__lead {
  color: var(--slate);
  font-size: 15px;
}

.page-faq .faq-section--dark .faq-head__lead,
.page-faq .faq-section--teal .faq-head__lead,
.page-faq .faq-section--wine .faq-head__lead {
  color: var(--on-dark);
}

/* ---------- 01 起步顺序 ---------- */

.page-faq .faq-flow {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-flow__item {
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-flow__no {
  display: block;
  margin-bottom: 10px;
  color: var(--celadon-dark);
  font-size: 13px;
}

.page-faq .faq-flow__item h3 {
  margin-bottom: 8px;
  font-size: 19px;
  line-height: 1.45;
}

.page-faq .faq-flow__item p {
  color: var(--slate);
  font-size: 15px;
}

/* ---------- 02 四步核对 ---------- */

.page-faq .faq-pathbar {
  margin-bottom: 24px;
  padding: 20px 20px 16px;
  border: var(--faq-line-dark);
  background: var(--navy-800);
}

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

.page-faq .faq-path__legend {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 6px;
  margin-top: 10px;
  color: var(--on-dark-dim);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .faq-step {
  padding: 22px 20px;
  border: var(--faq-line-dark);
  background: var(--navy-800);
  transition: border-color var(--ease), transform var(--ease);
}

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

.page-faq .faq-step__no {
  display: block;
  margin-bottom: 12px;
  color: var(--amber-light);
  font-size: 26px;
  line-height: 1;
}

.page-faq .faq-step h3 {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .faq-step p {
  color: var(--on-dark);
  font-size: 14.5px;
}

.page-faq .faq-step__link {
  display: inline-block;
  margin-top: 16px;
  padding-bottom: 2px;
  color: var(--celadon);
  font-size: 12.5px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease);
}

.page-faq .faq-step__link:hover,
.page-faq .faq-step__link:focus-visible {
  border-bottom-color: var(--celadon);
}

.page-faq .faq-step__link:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 3px;
}

/* ---------- 03 资料库五类 ---------- */

.page-faq .faq-folders {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .faq-folder {
  padding: 20px 18px 22px;
  border: 1px solid rgba(127, 191, 168, 0.35);
  background: var(--navy-900);
}

.page-faq .faq-folder__tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  padding: 4px 10px;
  border: 1px solid var(--celadon);
  color: var(--celadon);
  font-size: 12px;
}

.page-faq .faq-folder__dot {
  width: 6px;
  height: 6px;
  background: var(--celadon);
}

.page-faq .faq-folder h3 {
  margin-bottom: 8px;
  font-size: 18px;
  line-height: 1.45;
  color: var(--paper);
}

.page-faq .faq-folder p {
  color: var(--on-dark);
  font-size: 14.5px;
}

.page-faq .faq-figure {
  margin: 28px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid rgba(127, 191, 168, 0.35);
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  color: var(--on-dark-dim);
  font-size: 13px;
}

.page-faq .faq-section--ivory .faq-figure img {
  border: 1px solid var(--line);
}

.page-faq .faq-section--ivory .faq-figure figcaption {
  color: var(--slate);
}

/* ---------- 04 面板与设备 ---------- */

.page-faq .faq-guides {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-faq .faq-guide {
  padding: 24px 22px;
  border: 1px solid var(--line);
  background: var(--paper);
}

.page-faq .faq-guide__tag {
  margin-bottom: 12px;
  color: var(--celadon-dark);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .faq-guide h3 {
  margin-bottom: 14px;
  font-size: 19px;
  line-height: 1.45;
  color: var(--ink);
}

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

.page-faq .faq-guide__list li {
  position: relative;
  padding-left: 18px;
  color: var(--slate);
  font-size: 15px;
}

.page-faq .faq-guide__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  width: 8px;
  height: 1px;
  background: var(--amber);
}

.page-faq .faq-guide__link {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 2px;
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
  transition: color var(--ease), border-color var(--ease);
}

.page-faq .faq-guide__link:hover {
  color: var(--celadon-dark);
  border-bottom-color: var(--celadon-dark);
}

.page-faq .faq-figure--narrow {
  max-width: 880px;
}

/* ---------- 05 常见问题 ---------- */

.page-faq .faq-groups {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px 40px;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 6px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--ink);
  font-size: 17px;
  line-height: 1.4;
}

.page-faq .faq-group__title .mono {
  color: var(--amber);
  font-size: 12px;
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-heading);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
  transition: color var(--ease);
}

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

.page-faq .faq-item summary::before {
  content: "+";
  flex: 0 0 auto;
  width: 18px;
  color: var(--celadon-dark);
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1.5;
  transition: color var(--ease);
}

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

.page-faq .faq-item summary:hover {
  color: var(--celadon-dark);
}

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

.page-faq .faq-item__body {
  padding: 0 0 18px 30px;
}

.page-faq .faq-item__body p {
  color: var(--slate);
  font-size: 14.5px;
}

/* ---------- 06 更新节奏 ---------- */

.page-faq .faq-cadence {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: rgba(244, 241, 234, 0.22);
  border: 1px solid rgba(244, 241, 234, 0.22);
}

.page-faq .faq-cadence__item {
  padding: 20px 18px;
  background: var(--wine);
}

.page-faq .faq-cadence__num {
  display: block;
  margin-bottom: 8px;
  color: var(--amber-light);
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.2;
}

.page-faq .faq-cadence__item p {
  color: var(--on-dark);
  font-size: 14.5px;
}

.page-faq .faq-cadence__note {
  margin-top: 22px;
  max-width: 72ch;
  color: var(--on-dark-dim);
  font-size: 14px;
}

.page-faq .faq-cadence__link {
  display: inline-block;
  margin-top: 18px;
  padding-bottom: 2px;
  color: var(--amber-light);
  font-size: 13px;
  text-decoration: none;
  border-bottom: 1px solid var(--amber);
  transition: color var(--ease);
}

.page-faq .faq-cadence__link:hover {
  color: var(--paper);
}

/* ---------- 07 联系客服 ---------- */

.page-faq .faq-support {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
}

.page-faq .faq-support h2 {
  margin: 10px 0 16px;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1.28;
  color: var(--paper);
}

.page-faq .faq-support__text {
  max-width: 52ch;
  color: var(--on-dark);
  font-size: 15px;
}

.page-faq .faq-support__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-support__card {
  padding: 22px 20px;
  border: var(--faq-line-dark);
  background: var(--navy-800);
}

.page-faq .faq-support__list {
  margin: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-support__row {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--navy-600);
}

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

.page-faq .faq-support__row dt {
  color: var(--celadon);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-faq .faq-support__row dd {
  margin: 0;
  color: var(--paper);
  font-size: 15px;
  word-break: break-word;
}

.page-faq .faq-support__row dd a {
  color: var(--amber-light);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--ease);
}

.page-faq .faq-support__row dd a:hover {
  border-bottom-color: var(--amber-light);
}

.page-faq .faq-support__note {
  margin-top: 18px;
  color: var(--on-dark-dim);
  font-size: 13px;
  line-height: 1.7;
}

/* ---------- 响应式 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-folders {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }

  .page-faq .faq-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
  }

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

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

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

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 56px;
    align-items: end;
    padding-bottom: 56px;
  }

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

  .page-faq .faq-folder:first-child {
    grid-column: span 1;
  }

  .page-faq .faq-cadence {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    gap: 48px;
    align-items: start;
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>