.page-faq {
  padding-bottom: clamp(64px, 10vw, 120px);
}

.page-faq .faq-head {
  margin-bottom: clamp(40px, 7vw, 84px);
}

.page-faq .page-title {
  max-width: 16ch;
}

.page-faq .page-lede {
  max-width: 62ch;
}

.page-faq .faq-section {
  margin-bottom: clamp(56px, 9vw, 108px);
}

.page-faq .faq-section:last-of-type {
  margin-bottom: 0;
}

.page-faq .section-head {
  margin-bottom: clamp(24px, 4vw, 40px);
}

/* ---------- 步骤条 ---------- */

.page-faq .start-rail {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .start-steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .start-step {
  position: relative;
  padding: 20px 18px 22px;
  border: 1px solid var(--hair);
  border-radius: var(--r-solid);
  background: linear-gradient(180deg, rgba(18, 27, 42, 0.72) 0%, rgba(11, 17, 28, 0.94) 100%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: border-color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .start-step::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 18px;
  width: 34px;
  height: 2px;
  background: var(--orange);
  transition: width 220ms var(--ease);
}

.page-faq .start-step:hover::before,
.page-faq .start-step:focus-within::before {
  width: 72px;
}

.page-faq .start-step:hover,
.page-faq .start-step:focus-within {
  border-color: rgba(43, 227, 176, 0.42);
  transform: translateY(-3px);
}

.page-faq .step-no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--orange);
  margin-bottom: 14px;
}

.page-faq .step-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.3;
  color: var(--text);
}

.page-faq .step-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-faq .start-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-glass);
  border: 1px solid var(--glass-edge);
  object-fit: cover;
  background: var(--bg-panel);
}

.page-faq .start-figure .media-caption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--muted);
}

@media (min-width: 620px) {
  .page-faq .start-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .start-rail {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }
}

/* ---------- 折叠问答 ---------- */

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

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--hair);
  transition: background 240ms var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--daiqing) 0%, rgba(44, 74, 94, 0) 88%);
  opacity: 0;
  transition: opacity 320ms var(--ease);
}

.page-faq .faq-item[open] {
  background: rgba(11, 17, 28, 0.72);
}

.page-faq .faq-item[open]::before {
  opacity: 1;
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px 16px;
  padding: 22px 4px;
  min-height: 44px;
  list-style: none;
  cursor: pointer;
  transition: padding-left 220ms var(--ease);
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-item[open] > .faq-q {
  padding-left: 16px;
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-faq .faq-no {
  position: relative;
  padding-left: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  transition: color 200ms var(--ease);
}

.page-faq .faq-no::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 9px;
  height: 1px;
  background: var(--daiqing);
  transform: translateY(-50%);
  transition: background 200ms var(--ease), width 200ms var(--ease);
}

.page-faq .faq-q:hover .faq-no,
.page-faq .faq-item[open] .faq-no {
  color: var(--orange);
}

.page-faq .faq-q:hover .faq-no::before,
.page-faq .faq-item[open] .faq-no::before {
  width: 13px;
  background: var(--orange);
}

.page-faq .faq-q-text {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2.6vw, 1.5rem);
  font-weight: 300;
  line-height: 1.25;
  letter-spacing: 0.05em;
  color: var(--text);
}

.page-faq .faq-mark {
  position: relative;
  width: 20px;
  height: 20px;
  flex: none;
}

.page-faq .faq-mark::before,
.page-faq .faq-mark::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform 240ms var(--ease), background 240ms var(--ease);
}

.page-faq .faq-mark::before {
  left: 0;
  right: 0;
  top: 50%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-faq .faq-mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  transform: translateX(-50%) scaleY(1);
}

.page-faq .faq-q:hover .faq-mark::before {
  background: var(--mint);
}

.page-faq .faq-item[open] .faq-mark::before {
  background: var(--orange);
}

.page-faq .faq-item[open] .faq-mark::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-a {
  padding: 0 4px 32px;
  animation: faqReveal 320ms var(--ease) both;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-a p {
  margin: 0 0 14px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
}

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

.page-faq .faq-a a {
  color: var(--mint);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 227, 176, 0.35);
  transition: border-color 180ms var(--ease);
}

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

.page-faq .faq-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-faq .faq-list li {
  position: relative;
  padding-left: 20px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.76em;
  width: 9px;
  height: 1px;
  background: var(--mint);
}

.page-faq .faq-list li b {
  color: var(--text);
  font-weight: 500;
}

.page-faq .faq-list-num {
  counter-reset: faqStep;
}

.page-faq .faq-list-num li {
  padding-left: 34px;
}

.page-faq .faq-list-num li::before {
  counter-increment: faqStep;
  content: counter(faqStep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  width: auto;
  height: auto;
  background: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--orange);
  line-height: 2.2;
}

@media (min-width: 720px) {
  .page-faq .faq-a {
    padding-left: 74px;
  }
}

/* ---------- 缓存环形图 ---------- */

.page-faq .storage-block {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 18px 20px;
  margin: 4px 0 20px;
  border: 1px solid var(--hair);
  border-radius: var(--r-solid);
  background: var(--bg-panel);
}

.page-faq .ring {
  width: 84px;
  height: 84px;
  flex: none;
}

.page-faq .ring circle {
  fill: none;
  stroke-width: 8;
}

.page-faq .ring-track {
  stroke: var(--hair);
}

.page-faq .ring-fill {
  stroke: var(--mint);
  stroke-linecap: round;
  stroke-dasharray: 327;
  stroke-dashoffset: 216;
  transform: rotate(-90deg);
  transform-box: fill-box;
  transform-origin: center;
  animation: faqRing 1100ms var(--ease) both;
}

@keyframes faqRing {
  from {
    stroke-dashoffset: 327;
  }
  to {
    stroke-dashoffset: 216;
  }
}

.page-faq .ring-label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .ring-num {
  font-size: 24px;
  letter-spacing: 0.04em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.page-faq .ring-cap {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 导出章节 ---------- */

.page-faq .export-block {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

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

.page-faq .export-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border-radius: var(--r-solid);
  border: 1px solid var(--hair);
  object-fit: cover;
  background: var(--bg-panel);
}

@media (min-width: 760px) {
  .page-faq .export-block {
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
    gap: 26px;
    align-items: start;
  }
}

/* ---------- 排障列表 ---------- */

.page-faq .trouble-list {
  margin: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--hair);
}

.page-faq .trouble-row {
  padding: 16px 0;
  border-bottom: 1px solid rgba(26, 35, 51, 0.8);
}

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

.page-faq .trouble-row dt {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--text);
  margin-bottom: 8px;
  font-weight: 400;
}

.page-faq .trouble-row dd {
  margin: 0;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 结尾按钮 ---------- */

.page-faq .btn-row {
  margin-top: 20px;
  flex-wrap: wrap;
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-a {
    animation: none;
  }

  .page-faq .ring-fill {
    animation: none;
    stroke-dashoffset: 216;
  }

  .page-faq .start-step,
  .page-faq .faq-q,
  .page-faq .faq-no::before,
  .page-faq .faq-mark::before,
  .page-faq .faq-mark::after {
    transition: none;
  }

  .page-faq .start-step:hover,
  .page-faq .start-step:focus-within {
    transform: none;
  }
}
<<<END>>>