.page-faq {
  background: var(--fog-050);
  color: var(--ink-700);
  padding-bottom: 72px;
}

.page-faq .breadcrumb {
  padding-top: 22px;
  font-family: var(--font-ui);
  font-size: 13px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  padding-block: 22px 40px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 34em;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

.page-faq .faq-hero__panel {
  position: relative;
  overflow: hidden;
  padding: 24px 22px 22px;
  border-radius: var(--radius-m);
  background: linear-gradient(155deg, var(--blue-900) 0%, var(--blue-700) 58%, var(--teal-700) 100%);
  color: #fff;
}

.page-faq .faq-hero__panel::after {
  content: "";
  position: absolute;
  right: -70px;
  bottom: -90px;
  width: 220px;
  height: 220px;
  background: radial-gradient(circle, rgba(134, 201, 196, 0.42), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__panel-title {
  position: relative;
  z-index: 1;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--teal-300);
}

.page-faq .faq-hero__list {
  position: relative;
  z-index: 1;
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .faq-hero__list li {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding-bottom: 11px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  font-family: var(--font-ui);
  font-size: 15px;
  line-height: 1.5;
}

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

.page-faq .faq-hero__list .num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--amber-500);
}

/* ---------- 双栏外壳 ---------- */
.page-faq .tutorial-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  padding-top: 6px;
}

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

/* ---------- 章节骨架 ---------- */
.page-faq .tut-section {
  padding-block: 40px;
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 84px;
}

.page-faq .tut-section:first-child {
  padding-top: 26px;
}

.page-faq .tut-section:last-child {
  border-bottom: 0;
  padding-bottom: 8px;
}

.page-faq .tut-head {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 24px;
}

.page-faq .tut-head__num {
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.15;
  color: var(--amber-500);
}

.page-faq .tut-head h2 {
  margin: 0;
}

.page-faq .tut-head__lead {
  margin: 10px 0 0;
  max-width: 38em;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* ---------- 三条主线 ---------- */
.page-faq .mainline {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .mainline__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 20px 18px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  color: inherit;
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .mainline__card:hover,
.page-faq .mainline__card:focus-visible {
  border-color: var(--teal-600);
  transform: translateY(-2px);
  box-shadow: 0 12px 26px -20px var(--blue-900);
}

.page-faq .mainline__tag {
  align-self: flex-start;
  padding: 3px 9px;
  border: 1px solid var(--teal-300);
  border-radius: 999px;
  font-family: var(--font-ui);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--teal-700);
}

.page-faq .mainline__title {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--blue-900);
}

.page-faq .mainline__desc {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-500);
}

.page-faq .mainline__first {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--teal-700);
  transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease),
    margin-top var(--dur) var(--ease);
}

.page-faq .mainline__card:hover .mainline__first,
.page-faq .mainline__card:focus-visible .mainline__first {
  max-height: 60px;
  opacity: 1;
  margin-top: 4px;
}

/* ---------- 图片 ---------- */
.page-faq .media {
  margin: 0 0 26px;
}

.page-faq .media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-m);
  border: 1px solid var(--line);
}

.page-faq .media__caption {
  margin-top: 10px;
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-500);
}

/* ---------- 7 步核对 ---------- */
.page-faq .steps {
  counter-reset: done;
}

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

.page-faq .step {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr);
  gap: 14px;
  padding: 17px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-left: 3px solid var(--teal-300);
  border-radius: var(--radius-s);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .step:hover {
  border-color: var(--line-strong);
  border-left-color: var(--teal-600);
}

.page-faq .step__box {
  width: 20px;
  height: 20px;
  margin: 3px 0 0;
  accent-color: var(--teal-600);
  cursor: pointer;
}

.page-faq .step__box:checked {
  counter-increment: done;
}

.page-faq .step__body {
  display: block;
  cursor: pointer;
  min-width: 0;
}

.page-faq .step__line {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .step__num {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 700;
  color: var(--amber-500);
  transition: color var(--dur) var(--ease);
}

.page-faq .step__text {
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--ink-700);
  transition: color var(--dur) var(--ease);
}

.page-faq .step__judge {
  display: block;
  margin-top: 7px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-500);
}

.page-faq .step__box:checked ~ .step__body .step__text {
  color: var(--green-600);
  text-decoration: line-through;
  text-decoration-thickness: 1px;
}

.page-faq .step__box:checked ~ .step__body .step__num {
  color: var(--green-600);
}

.page-faq .step:has(.step__box:checked) {
  border-left-color: var(--green-600);
  background: rgba(46, 139, 98, 0.05);
}

.page-faq .steps__meter {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  margin: 20px 0 0;
  padding: 14px 18px;
  background: var(--fog-200);
  border-radius: var(--radius-s);
  font-family: var(--font-ui);
  font-size: 14px;
  color: var(--ink-700);
}

.page-faq .steps__count {
  font-family: var(--font-mono);
  font-size: 19px;
  font-weight: 700;
  color: var(--teal-700);
}

.page-faq .steps__count::after {
  content: counter(done);
}

.page-faq .steps__hint {
  flex: 1 1 100%;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.7;
  color: var(--ink-500);
}

/* ---------- 指南查询 ---------- */
.page-faq .guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-bottom: 18px;
}

.page-faq .guide-card {
  padding: 20px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue-700);
  border-radius: var(--radius-s);
}

.page-faq .guide-card__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  color: var(--blue-900);
}

.page-faq .guide-card__text {
  margin: 0 0 10px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-700);
}

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

.page-faq .callout p {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.85;
}

/* ---------- 排查 ---------- */
.page-faq .tree {
  display: block;
  width: 100%;
  max-width: 560px;
  height: auto;
  margin: 0 0 8px;
}

.page-faq .tree__trunk {
  stroke: var(--teal-300);
  stroke-width: 1.5;
}

.page-faq .tree__node circle {
  fill: var(--teal-600);
}

.page-faq .tree__node rect {
  fill: #fff;
  stroke: var(--line-strong);
  stroke-width: 1.5;
}

.page-faq .tree__node text {
  font-family: var(--font-ui);
  font-size: 14px;
  fill: var(--ink-700);
}

.page-faq .tree__node--last circle {
  fill: var(--amber-500);
}

.page-faq .tree__node--last rect {
  stroke: var(--amber-500);
}

.page-faq .triage {
  list-style: none;
  margin: 24px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .triage__item {
  padding: 16px 18px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-s);
}

.page-faq .triage__level {
  display: inline-block;
  margin-bottom: 8px;
  padding: 2px 9px;
  background: var(--fog-200);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--blue-700);
}

.page-faq .triage__title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--blue-900);
}

.page-faq .triage__text {
  margin: 0;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-500);
}

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

.page-faq .qa-group {
  padding: 0 0 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: #fff;
  overflow: hidden;
}

.page-faq .qa-group__title {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin: 0;
  padding: 13px 16px;
  background: var(--fog-200);
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--blue-900);
}

.page-faq .qa-group__count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  color: var(--teal-700);
}

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

.page-faq .qa summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-ui);
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink-700);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

.page-faq .qa summary::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--teal-600);
}

.page-faq .qa[open] summary::after {
  content: "–";
  color: var(--amber-500);
}

.page-faq .qa summary:hover {
  background: var(--fog-050);
  color: var(--teal-700);
}

.page-faq .qa p {
  margin: 0;
  padding: 0 16px 15px;
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-500);
}

/* ---------- 侧栏索引 ---------- */
.page-faq .tutorial-index {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-faq .doc-index {
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

.page-faq .doc-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--teal-700);
}

.page-faq .doc-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .doc-index__link {
  display: block;
  white-space: nowrap;
  padding: 8px 10px;
  border-radius: var(--radius-s);
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--ink-500);
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}

.page-faq .doc-index__link:hover {
  color: var(--blue-900);
  background: var(--fog-200);
}

.page-faq .doc-index__link[aria-current="true"] {
  color: var(--teal-700);
  background: var(--fog-050);
  box-shadow: inset 3px 0 0 var(--amber-500);
}

.page-faq .index-note {
  padding: 16px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
}

.page-faq .index-note--plain {
  background: transparent;
  border-style: dashed;
}

.page-faq .index-note__label {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--blue-900);
}

.page-faq .index-note__text {
  margin: 0 0 12px;
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.8;
  color: var(--ink-500);
}

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

.page-faq .index-note__list a {
  display: block;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-ui);
  font-size: 13px;
  line-height: 1.6;
  color: var(--teal-700);
  text-decoration: none;
}

.page-faq .index-note__list li:last-child a {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .index-note__list a:hover {
  color: var(--blue-900);
  box-shadow: inset 0 -1px 0 var(--amber-500);
}

/* ---------- 中屏 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-hero__lead {
    font-size: 17px;
  }

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

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

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

@media (min-width: 760px) {
  .page-faq .mainline {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 52px;
    align-items: end;
    padding-block: 30px 54px;
  }
}

@media (min-width: 960px) {
  .page-faq .tutorial-shell {
    grid-template-columns: minmax(0, 1fr) 262px;
    gap: 56px;
    align-items: start;
  }

  .page-faq .tutorial-index {
    position: sticky;
    top: 84px;
  }

  .page-faq .doc-index__list {
    display: grid;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .doc-index__link {
    white-space: normal;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .mainline__card,
  .page-faq .mainline__first,
  .page-faq .step,
  .page-faq .qa summary,
  .page-faq .doc-index__link {
    transition: none;
  }

  .page-faq .mainline__card:hover,
  .page-faq .mainline__card:focus-visible {
    transform: none;
  }
}
<<<END>>>