.page-faq {
  --faq-num-col: 52px;
  --faq-step-gap: clamp(12px, 2vw, 22px);
}

@media (min-width: 900px) {
  .page-faq {
    --faq-num-col: 96px;
  }
}

/* ---------- 章节目录容器（章节不足时由脚本隐藏） ---------- */
.page-faq .chapter-rail {
  pointer-events: auto;
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-frame {
  position: relative;
  border: var(--bw) solid var(--line);
  background:
    repeating-linear-gradient(0deg, rgba(33, 247, 195, 0.05) 0 1px, transparent 1px 44px),
    linear-gradient(158deg, var(--panel) 0%, var(--ink) 74%);
  padding: clamp(22px, 4vw, 56px);
  margin-top: clamp(16px, 2.4vw, 28px);
  overflow: hidden;
}

.page-faq .faq-frame__ticks {
  position: absolute;
  left: 0;
  right: 0;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, rgba(143, 167, 155, 0.55) 0 1px, transparent 1px 26px);
  pointer-events: none;
}

.page-faq .faq-frame__ticks--top {
  top: 0;
  border-bottom: 1px solid rgba(31, 74, 56, 0.6);
}

.page-faq .faq-frame__ticks--bottom {
  bottom: 0;
  border-top: 1px solid rgba(31, 74, 56, 0.6);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

@media (min-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
  }
}

.page-faq .faq-hero__main h1 {
  font-size: clamp(32px, 6.4vw, 72px);
  margin: clamp(10px, 1.6vw, 18px) 0 0;
  letter-spacing: -0.02em;
}

.page-faq .faq-hero__main .lede {
  margin-top: clamp(14px, 2vw, 22px);
  max-width: 46ch;
}

.page-faq .faq-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(18px, 2.6vw, 30px);
}

.page-faq .faq-hero__panel {
  padding: clamp(18px, 2.4vw, 26px);
  border-left: 4px solid var(--cyan);
}

.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 22px);
  margin: 0;
}

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

.page-faq .faq-facts dt {
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--metal);
  line-height: 1.5;
}

.page-faq .faq-facts dd {
  margin: 6px 0 0;
  font-size: clamp(20px, 3vw, 30px);
  line-height: 1;
  color: var(--cyan);
}

/* ---------- 四条教程线：选项卡 ---------- */
.page-faq .faq-lines .sec-head {
  margin-bottom: clamp(22px, 3vw, 36px);
}

.page-faq .faq-switch {
  position: relative;
}

.page-faq .faq-switch__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-tabbar {
  position: relative;
  display: flex;
  border-top: var(--bw) solid var(--line);
  border-bottom: var(--bw) solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-tab {
  flex: 1 0 auto;
  min-width: 146px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border-bottom: 3px solid transparent;
  background: var(--ink);
  color: var(--metal);
  cursor: pointer;
  transition: color 0.18s ease, background-color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-tab::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--line);
}

.page-faq .faq-tab__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-tab__label {
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
}

.page-faq .faq-tab:hover {
  color: var(--white);
  background: var(--panel);
}

.page-faq #line-desktop:checked ~ .faq-tabbar label[for="line-desktop"],
.page-faq #line-subscription:checked ~ .faq-tabbar label[for="line-subscription"],
.page-faq #line-injury:checked ~ .faq-tabbar label[for="line-injury"],
.page-faq #line-watchlist:checked ~ .faq-tabbar label[for="line-watchlist"] {
  color: var(--white);
  background: var(--raise);
  border-bottom-color: var(--orange);
}

.page-faq #line-desktop:checked ~ .faq-tabbar label[for="line-desktop"] .faq-tab__idx,
.page-faq #line-subscription:checked ~ .faq-tabbar label[for="line-subscription"] .faq-tab__idx,
.page-faq #line-injury:checked ~ .faq-tabbar label[for="line-injury"] .faq-tab__idx,
.page-faq #line-watchlist:checked ~ .faq-tabbar label[for="line-watchlist"] .faq-tab__idx {
  color: var(--orange);
}

.page-faq .faq-switch__radio:focus-visible ~ .faq-tabbar label[for="line-desktop"],
.page-faq .faq-switch__radio:focus-visible ~ .faq-tabbar label[for="line-subscription"],
.page-faq .faq-switch__radio:focus-visible ~ .faq-tabbar label[for="line-injury"],
.page-faq .faq-switch__radio:focus-visible ~ .faq-tabbar label[for="line-watchlist"] {
  outline: 2px solid var(--cyan);
  outline-offset: -4px;
}

/* ---------- 四条教程线：面板 ---------- */
.page-faq .faq-panels {
  padding-top: clamp(24px, 3.6vw, 44px);
}

.page-faq .faq-panel {
  display: none;
}

.page-faq #line-desktop:checked ~ .faq-panels .faq-panel--desktop,
.page-faq #line-subscription:checked ~ .faq-panels .faq-panel--subscription,
.page-faq #line-injury:checked ~ .faq-panels .faq-panel--injury,
.page-faq #line-watchlist:checked ~ .faq-panels .faq-panel--watchlist {
  display: block;
  animation: faq-panel-in 0.2s ease both;
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .track-head {
  display: grid;
  gap: 10px;
  max-width: 72ch;
}

.page-faq .track-head__idx {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .track-head__title {
  margin: 0;
  font-size: clamp(23px, 3.6vw, 40px);
}

.page-faq .track-head__lede {
  margin: 0;
  color: var(--soft);
  font-size: 15px;
  line-height: 1.75;
  max-width: 62ch;
}

.page-faq .shot {
  margin: clamp(20px, 3vw, 34px) 0 0;
  border: var(--bw) solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-hard);
}

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

.page-faq .shot figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--metal);
}

.page-faq .shot--square {
  max-width: 540px;
}

/* ---------- 步骤列表 ---------- */
.page-faq .steps {
  list-style: none;
  margin: clamp(20px, 3vw, 34px) 0 0;
  padding: 0 0 0 clamp(12px, 2vw, 22px);
  border-left: 2px solid rgba(33, 247, 195, 0.4);
}

.page-faq .step {
  display: grid;
  grid-template-columns: var(--faq-num-col) minmax(0, 1fr);
  gap: var(--faq-step-gap);
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .step__num {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 36px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

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

.page-faq .step__title {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(16px, 2vw, 20px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .step__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
  max-width: 62ch;
}

.page-faq .step__more {
  margin-top: 10px;
}

.page-faq .step__more summary {
  display: inline-block;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  border-bottom: 1px dashed rgba(33, 247, 195, 0.5);
}

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

.page-faq .step__more[open] summary {
  color: var(--amber);
  border-bottom-color: rgba(255, 176, 32, 0.5);
}

.page-faq .step__more p {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.75;
  color: var(--metal);
  max-width: 58ch;
}

/* ---------- 每条线结尾色带 ---------- */
.page-faq .track-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  margin-top: clamp(22px, 3.2vw, 34px);
  padding: 16px clamp(16px, 2.4vw, 24px);
  background: var(--raise);
  border-left: 4px solid var(--orange);
}

.page-faq .track-cta p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--soft);
  max-width: 56ch;
}

/* ---------- 容易搞混的地方 ---------- */
.page-faq .faq-myths {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

@media (min-width: 1000px) {
  .page-faq .faq-myths {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-faq .faq-myths .sec-head {
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-faq .myth-list {
  display: grid;
  gap: 14px;
}

.page-faq .myth {
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--panel);
  border-left: 4px solid var(--amber);
}

.page-faq .myth h3 {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(16px, 1.9vw, 19px);
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .myth p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
  max-width: 60ch;
}

.page-faq .faq-check {
  padding: clamp(20px, 2.8vw, 30px);
  background: var(--panel);
  border: var(--bw) solid var(--line);
  border-top: 4px solid var(--cyan);
}

.page-faq .faq-check__title {
  margin: 0 0 16px;
  font-family: var(--font-body);
  font-size: clamp(17px, 2vw, 21px);
  font-weight: 700;
  color: var(--white);
}

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

.page-faq .checklist label {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  cursor: pointer;
  font-size: 15px;
  line-height: 1.65;
  color: var(--soft);
}

.page-faq .checklist input {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin: 2px 0 0;
  accent-color: var(--cyan);
  cursor: pointer;
}

.page-faq .checklist input:checked + span {
  color: var(--white);
}

.page-faq .faq-check__note {
  margin: 18px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  font-size: 14px;
  line-height: 1.7;
  color: var(--metal);
}

/* ---------- 收尾色带 ---------- */
.page-faq .faq-cta__band {
  position: relative;
  display: grid;
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(24px, 4vw, 48px);
  padding-left: clamp(30px, 4.6vw, 56px);
  background: linear-gradient(118deg, var(--raise) 0%, var(--panel) 56%, var(--ink) 100%);
  border: var(--bw) solid var(--line);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-cta__band::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 6px;
  background: linear-gradient(180deg, var(--orange), var(--amber));
}

@media (min-width: 860px) {
  .page-faq .faq-cta__band {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: center;
  }
}

.page-faq .faq-cta__title {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.6vw, 42px);
}

.page-faq .faq-cta__text {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--soft);
  max-width: 52ch;
}

.page-faq .faq-cta__contact {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-cta__contact p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-cta__key {
  display: inline-block;
  min-width: 62px;
  margin-right: 8px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--metal);
}

.page-faq .faq-cta__contact .btn {
  margin-top: 8px;
  justify-self: start;
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 640px) {
  .page-faq .faq-tab {
    min-width: 128px;
    padding: 12px 12px;
  }

  .page-faq .faq-tab__label {
    font-size: 14px;
  }

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

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

  .page-faq .shot {
    box-shadow: 4px 4px 0 rgba(3, 10, 7, 0.85);
  }

  .page-faq .track-cta {
    flex-direction: column;
    align-items: flex-start;
  }
}

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

  .page-faq .faq-tab {
    transition: none;
  }
}
<<<END>>>