.page-faq {
  background: var(--warm);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .breadcrumb {
  padding-block: 18px 0;
}

/* 首屏：实验室工作台 */
.page-faq .faq-hero {
  position: relative;
  background: var(--navy);
  color: var(--warm);
  padding-block: clamp(28px, 5vw, 56px) clamp(20px, 3vw, 32px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(201, 209, 218, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 209, 218, 0.06) 1px, transparent 1px);
  background-size: 72px 72px;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -30%;
  right: -14%;
  width: 54%;
  height: 170%;
  background: linear-gradient(160deg, rgba(255, 107, 44, 0.18), rgba(79, 174, 159, 0.06) 55%, transparent 78%);
  transform: rotate(-9deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

.page-faq .faq-hero__copy .eyebrow {
  color: var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 6vw, 58px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  max-width: 15em;
}

.page-faq .faq-hero .lead {
  margin-top: 18px;
  max-width: 40em;
  color: rgba(247, 244, 238, 0.78);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .panel.faq-hero__panel {
  position: relative;
  background: linear-gradient(155deg, rgba(247, 244, 238, 0.1), rgba(19, 43, 74, 0.62));
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 22px 20px;
  backdrop-filter: blur(6px);
}

.page-faq .faq-hero__panel .mono-label {
  color: var(--orange);
  letter-spacing: 0.16em;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-stats__item {
  display: grid;
  grid-template-columns: minmax(0, 5.2em) minmax(0, 1fr);
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-stats__num {
  font-family: var(--font-mono);
  font-size: 19px;
  color: var(--celadon);
  letter-spacing: -0.01em;
}

.page-faq .faq-stats__label {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(247, 244, 238, 0.74);
}

/* 问题类型标签条 */
.page-faq .faq-switch {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 8px;
  margin-top: clamp(24px, 4vw, 40px);
  padding-bottom: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.page-faq .faq-switch::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-switch__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-switch__link:hover,
.page-faq .faq-switch__link:focus-visible {
  border-color: var(--orange);
  color: var(--warm);
  background: rgba(255, 107, 44, 0.12);
}

.page-faq .faq-switch__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--orange);
}

/* 图片 */
.page-faq .faq-figure-band {
  padding-block: clamp(24px, 4vw, 44px);
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid rgba(11, 31, 58, 0.12);
  border-radius: var(--radius);
}

.page-faq .faq-figure__cap {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--rock);
}

/* 章节骨架 */
.page-faq .faq-section {
  padding-block: clamp(36px, 5.5vw, 76px);
}

.page-faq .faq-section--dark {
  background: var(--midnight);
  color: var(--warm);
}

.page-faq .faq-section--cream {
  background: var(--cream);
}

.page-faq .faq-head {
  max-width: 760px;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-head__idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--orange);
}

.page-faq .faq-head h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(23px, 3.6vw, 38px);
  line-height: 1.22;
  letter-spacing: -0.02em;
}

.page-faq .faq-head__sub {
  margin: 12px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--rock);
}

.page-faq .faq-section--dark .faq-head__sub {
  color: rgba(247, 244, 238, 0.72);
}

/* 01 定位卡片 */
.page-faq .triage-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .triage-card {
  position: relative;
  background: var(--cream);
  border: 1px solid rgba(11, 31, 58, 0.1);
  border-radius: var(--radius);
  padding: 20px 18px 18px;
  transition: transform 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.page-faq .triage-card:hover {
  transform: translateY(-3px);
  border-color: var(--orange);
  box-shadow: 0 12px 26px -18px rgba(11, 31, 58, 0.55);
}

.page-faq .triage-card__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .triage-card__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -0.01em;
}

.page-faq .triage-card__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: #3b4757;
}

.page-faq .triage-card__link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px dashed var(--orange);
}

.page-faq .triage-card__link::after {
  content: " →";
  color: var(--orange);
}

.page-faq .triage-card__link:hover,
.page-faq .triage-card__link:focus-visible {
  color: var(--orange);
}

/* 02 步骤卡 */
.page-faq .faq-steps {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .step-card {
  position: relative;
  background: rgba(247, 244, 238, 0.045);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 20px 18px 22px;
}

.page-faq .step-card__bar {
  position: relative;
  height: 3px;
  background: rgba(201, 209, 218, 0.2);
  overflow: hidden;
  margin-bottom: 18px;
}

.page-faq .step-card__bar::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 34%;
  background: var(--orange);
  transition: width 0.4s ease;
}

.page-faq .faq-steps .step-card:nth-child(2) .step-card__bar::after {
  width: 67%;
}

.page-faq .faq-steps .step-card:nth-child(3) .step-card__bar::after {
  width: 100%;
  background: var(--celadon);
}

.page-faq .step-card__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--orange);
}

.page-faq .step-card__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 18px;
  line-height: 1.4;
  color: var(--warm);
}

.page-faq .step-card__text {
  margin: 10px 0 16px;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(247, 244, 238, 0.74);
}

/* 折叠面板 */
.page-faq .faq-folds {
  margin-top: clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line-strong);
}

.page-faq .faq-folds__note {
  margin: 0;
  padding-top: 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--celadon);
}

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

.page-faq .fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--warm);
}

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

.page-faq .fold__summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .fold[open] .fold__summary::after {
  content: "−";
}

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

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

.page-faq .fold__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .fold__list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(247, 244, 238, 0.72);
}

.page-faq .fold__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 6px;
  height: 6px;
  background: var(--celadon);
}

/* 03 反馈 */
.page-faq .feedback-grid {
  display: grid;
  gap: clamp(22px, 3.5vw, 38px);
}

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

.page-faq .feedback-step {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-bottom: 1px dashed rgba(11, 31, 58, 0.16);
}

.page-faq .feedback-step:first-child {
  padding-top: 0;
}

.page-faq .feedback-step__num {
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1.2;
  color: var(--orange);
}

.page-faq .feedback-step__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
  letter-spacing: 0.01em;
}

.page-faq .feedback-step__text {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--rock);
}

.page-faq .feedback-panel {
  position: relative;
  overflow: hidden;
  background: linear-gradient(160deg, var(--midnight), var(--navy));
  color: var(--warm);
  border-radius: var(--radius);
  padding: 24px 20px;
}

.page-faq .feedback-panel::after {
  content: "";
  position: absolute;
  right: -30px;
  top: -40px;
  width: 150px;
  height: 150px;
  background: radial-gradient(circle, rgba(255, 107, 44, 0.28), transparent 68%);
  pointer-events: none;
}

.page-faq .feedback-panel .mono-label {
  color: var(--orange);
  letter-spacing: 0.16em;
}

.page-faq .feedback-panel__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 19px;
  line-height: 1.4;
}

.page-faq .feedback-panel__text {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(247, 244, 238, 0.76);
}

.page-faq .feedback-panel__list {
  list-style: none;
  margin: 18px 0 20px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .feedback-panel__list li {
  padding-top: 10px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .feedback-panel .btn {
  position: relative;
  z-index: 1;
}

/* 04 平板 */
.page-faq .tablet-grid {
  display: grid;
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-faq .tablet-list {
  display: grid;
  gap: 12px;
}

.page-faq .tablet-item {
  background: rgba(247, 244, 238, 0.72);
  border-left: 3px solid var(--celadon);
  padding: 16px 16px 16px 18px;
}

.page-faq .tablet-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 16px;
}

.page-faq .tablet-item__text {
  margin: 7px 0 0;
  font-size: 14px;
  line-height: 1.76;
  color: #3b4757;
}

.page-faq .tablet-more {
  justify-self: start;
  margin-top: 6px;
}

/* 05 代码 */
.page-faq .code-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .code-card {
  background: var(--cream);
  border: 1px solid rgba(11, 31, 58, 0.12);
  border-radius: var(--radius);
  padding: 0 18px;
}

.page-faq .code-card__summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px 0;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

.page-faq .code-card__summary::-webkit-details-marker {
  display: none;
}

.page-faq .code-card__summary:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
}

.page-faq .code-card__key {
  flex: 0 0 auto;
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  background: var(--navy);
  color: var(--orange);
  font-family: var(--font-mono);
  font-size: 16px;
  border-radius: var(--radius);
}

.page-faq .code-card__body {
  padding: 0 0 18px;
}

.page-faq .code-card__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .code-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 14px;
  line-height: 1.72;
  color: #3b4757;
}

.page-faq .code-card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 5px;
  height: 5px;
  background: var(--moss);
}

.page-faq .code-card__hint {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(11, 31, 58, 0.16);
  font-size: 13px;
  line-height: 1.7;
  color: var(--clay);
}

.page-faq .code-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--rock);
}

.page-faq .code-inline {
  display: inline-block;
  padding: 2px 7px;
  background: rgba(11, 31, 58, 0.07);
  color: var(--navy);
  font-family: var(--font-mono);
  font-size: 13px;
  border-radius: var(--radius);
}

/* 06 跟进 */
.page-faq .after-grid {
  display: grid;
  gap: 14px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .after-card {
  border-top: 2px solid var(--orange);
  background: rgba(247, 244, 238, 0.05);
  padding: 20px 18px;
}

.page-faq .after-card__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 32px);
  color: var(--celadon);
  letter-spacing: -0.02em;
}

.page-faq .after-card__title {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 17px;
  color: var(--warm);
}

.page-faq .after-card__text {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(247, 244, 238, 0.72);
}

.page-faq .after-links {
  display: grid;
  gap: 10px;
  margin-top: clamp(22px, 3vw, 34px);
}

.page-faq .after-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--warm);
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .after-link:hover,
.page-faq .after-link:focus-visible {
  border-color: var(--orange);
  background: rgba(255, 107, 44, 0.1);
}

.page-faq .after-link__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .after-link__label {
  font-size: 15px;
  line-height: 1.5;
}

.page-faq .after-link__arrow {
  font-family: var(--font-mono);
  color: var(--celadon);
}

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

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

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

  .page-faq .tablet-more {
    grid-column: 1 / -1;
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
    align-items: start;
  }

  .page-faq .triage-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }

  .page-faq .triage-card {
    grid-column: span 2;
  }

  .page-faq .triage-card:nth-child(4),
  .page-faq .triage-card:nth-child(5) {
    grid-column: span 3;
  }

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

  .page-faq .feedback-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
  }

  .page-faq .feedback-panel {
    position: sticky;
    top: 24px;
  }

  .page-faq .tablet-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }

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

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

  .page-faq .after-link {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      "idx arrow"
      "label label";
    row-gap: 8px;
  }

  .page-faq .after-link__idx {
    grid-area: idx;
  }

  .page-faq .after-link__label {
    grid-area: label;
  }

  .page-faq .after-link__arrow {
    grid-area: arrow;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .triage-card,
  .page-faq .step-card__bar::after,
  .page-faq .after-link,
  .page-faq .faq-switch__link {
    transition: none;
  }
}
<<<END>>>