.page-faq {
  --faq-aside: 236px;
  padding-bottom: 64px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 22px 0 4px;
}

.page-faq .faq-hero__frame {
  position: relative;
  padding: clamp(22px, 4.4vw, 46px);
  background:
    radial-gradient(circle at 88% 10%, rgba(200, 247, 65, 0.10), transparent 52%),
    linear-gradient(152deg, rgba(28, 42, 36, 0.92) 0%, rgba(11, 21, 18, 0.55) 62%);
  border: 1px solid var(--line);
}

.page-faq .faq-hero__frame::before {
  content: "";
  position: absolute;
  inset: 6px;
  border: 1px solid rgba(143, 168, 58, 0.22);
  pointer-events: none;
}

.page-faq .faq-hero .h1 {
  margin: 14px 0 0;
  font-family: var(--font-cond);
  font-size: clamp(28px, 6.6vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--ink-strong);
  max-width: 22ch;
}

.page-faq .faq-hero__lead {
  margin: 16px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 22px 0 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-hero__meta li {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__meta .mono {
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--accent);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-top: 34px;
}

.page-faq .faq-side {
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-faq .faq-side__title {
  margin: 0 0 10px;
}

.page-faq .faq-index {
  display: flex;
  gap: 6px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__item {
  flex: 0 0 auto;
}

.page-faq .faq-index__label {
  display: inline-block;
  padding: 7px 13px;
  font-size: 14px;
  white-space: nowrap;
  color: var(--muted);
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 999px;
  transition: color var(--dur), background var(--dur), border-color var(--dur);
}

.page-faq .faq-index__label:hover {
  color: var(--ink-strong);
  border-color: var(--accent-dim);
}

.page-faq .faq-index__label.is-active {
  color: #0B1512;
  background: var(--accent);
  border-color: var(--accent);
}

/* ---------- 章节通用 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 96px;
}

.page-faq .faq-section + .faq-section {
  margin-top: 46px;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-section__head {
  margin-bottom: 18px;
}

.page-faq .faq-section__head .eyebrow {
  margin: 0;
}

.page-faq .faq-section__head .h2 {
  margin: 8px 0 0;
  font-family: var(--font-cond);
  font-size: clamp(22px, 4.2vw, 30px);
  letter-spacing: 0.01em;
  line-height: 1.15;
  color: var(--ink-strong);
}

.page-faq .faq-section__lead {
  margin: 10px 0 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-section a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-section a:hover {
  color: var(--ink-strong);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 16px 0;
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--accent);
  padding-top: 4px;
}

.page-faq .faq-step__body .h3 {
  margin: 0 0 6px;
  font-family: var(--font-cond);
  font-size: 17px;
  line-height: 1.3;
  color: var(--ink-strong);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.68;
  color: var(--ink);
}

/* ---------- 手风琴问答 ---------- */
.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 34px 15px 18px;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink-strong);
  cursor: pointer;
  list-style: none;
  transition: color var(--dur);
}

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

.page-faq .faq-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: transparent;
  transition: background var(--dur);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--accent-dim);
  transition: transform var(--dur), color var(--dur);
}

.page-faq .faq-item[open] .faq-item__q::after {
  transform: translateY(-50%) rotate(45deg);
  color: var(--accent);
}

.page-faq .faq-item__q:hover {
  color: var(--accent);
}

.page-faq .faq-item__num {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--accent-dim);
}

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

.page-faq .faq-item__a {
  padding: 0 34px 18px 18px;
  animation: faqOpen 160ms ease-out;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

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

@keyframes faqOpen {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: none; }
}

/* ---------- 状态点图例 ---------- */
.page-faq .faq-legend {
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .faq-legend__item {
  display: grid;
  grid-template-columns: 12px minmax(0, 1fr);
  gap: 4px 12px;
  padding: 13px 15px;
  background: var(--panel);
  border-left: 2px solid var(--line);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-legend__item:has(.dot--accent) {
  border-left-color: var(--accent-dim);
}

.page-faq .faq-legend__item:has(.dot--away) {
  border-left-color: var(--away);
}

.page-faq .faq-legend__name {
  color: var(--ink-strong);
  font-weight: 600;
}

.page-faq .faq-legend__desc {
  grid-column: 2;
  color: var(--ink);
}

/* ---------- 数据条带 ---------- */
.page-faq .faq-band {
  margin: 0 0 24px;
  padding: 16px 18px;
  background: var(--raise);
  border: 1px solid var(--line);
}

.page-faq .faq-band .band__label {
  display: block;
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-band .band__stats {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.page-faq .faq-band .band__stat {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  font-size: 14px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-band .band__value {
  font-family: var(--font-mono);
  font-size: 21px;
  line-height: 1;
  color: var(--accent);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
}

.page-faq .faq-figure .media-frame {
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.06);
}

.page-faq .faq-figure .media-frame__cap {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 适配等级 ---------- */
.page-faq .faq-grades {
  display: grid;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-grade {
  padding: 15px 16px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
}

.page-faq .faq-grade--a { border-left-color: var(--accent); }
.page-faq .faq-grade--b { border-left-color: var(--away); }
.page-faq .faq-grade--c { border-left-color: var(--muted); }

.page-faq .faq-grade__head {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin-bottom: 8px;
}

.page-faq .faq-grade__key {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  color: var(--ink-strong);
}

.page-faq .faq-grade--a .faq-grade__key { color: var(--accent); }
.page-faq .faq-grade--b .faq-grade__key { color: var(--away); }
.page-faq .faq-grade--c .faq-grade__key { color: var(--muted); }

.page-faq .faq-grade__name {
  font-family: var(--font-cond);
  font-size: 16px;
  color: var(--ink-strong);
}

.page-faq .faq-grade__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
}

/* ---------- 订阅面板 ---------- */
.page-faq .faq-subpanel {
  display: grid;
  gap: 24px;
  margin: 0 0 22px;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: 0 0 0 1px var(--frame) inset;
}

.page-faq .faq-subpanel__label {
  margin: 0 0 10px;
  font-family: var(--font-cond);
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-seg {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 6px;
}

.page-faq .faq-seg__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-seg__label {
  display: block;
  padding: 10px 6px;
  text-align: center;
  font-size: 14px;
  color: var(--ink);
  background: var(--raise);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: background var(--dur), color var(--dur), border-color var(--dur);
}

.page-faq .faq-seg__label:hover {
  border-color: var(--accent-dim);
}

.page-faq .faq-seg__input:checked + .faq-seg__label {
  background: var(--accent);
  border-color: var(--accent);
  color: #0B1512;
  font-weight: 700;
}

.page-faq .faq-seg__input:focus-visible + .faq-seg__label {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-faq .faq-subpanel__note {
  margin-top: 12px;
  display: grid;
  gap: 6px;
}

.page-faq .faq-summary {
  display: none;
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--accent);
  font-size: 14px;
  line-height: 1.62;
  color: var(--ink);
}

@supports not (selector(:has(*))) {
  .page-faq .faq-summary {
    display: block;
  }
}

@supports selector(:has(*)) {
  .page-faq .faq-subpanel:has(#faq-freq-a:checked) .faq-summary[data-sum="a"],
  .page-faq .faq-subpanel:has(#faq-freq-b:checked) .faq-summary[data-sum="b"],
  .page-faq .faq-subpanel:has(#faq-freq-c:checked) .faq-summary[data-sum="c"] {
    display: block;
  }
}

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

.page-faq .faq-switch {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 2px;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.page-faq .faq-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-switch__track {
  position: relative;
  flex: none;
  width: 44px;
  height: 24px;
  border-radius: 999px;
  background: var(--raise);
  border: 1px solid var(--line);
  transition: background var(--dur), border-color var(--dur);
}

.page-faq .faq-switch__track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform var(--dur) ease, background var(--dur);
}

.page-faq .faq-switch__input:checked + .faq-switch__track {
  background: rgba(200, 247, 65, 0.16);
  border-color: var(--accent-dim);
}

.page-faq .faq-switch__input:checked + .faq-switch__track::after {
  transform: translateX(20px);
  background: var(--accent);
}

.page-faq .faq-switch__input:focus-visible + .faq-switch__track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.page-faq .faq-switch__text {
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
  transition: color var(--dur);
}

.page-faq .faq-switch:has(.faq-switch__input:checked) .faq-switch__text {
  color: var(--ink-strong);
}

/* ---------- 联系信息 ---------- */
.page-faq .faq-contact {
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  font-size: 15px;
}

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

.page-faq .faq-contact__key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .faq-contact__val {
  color: var(--ink-strong);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__val.mono {
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: 0.01em;
  color: var(--accent);
}

.page-faq .faq-contact__tip {
  margin: 0 0 12px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--ink);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-legend__item {
    grid-template-columns: 12px auto minmax(0, 1fr);
    align-items: baseline;
  }

  .page-faq .faq-legend__desc {
    grid-column: 3;
  }

  .page-faq .faq-band .band__stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px 28px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 92px minmax(0, 1fr);
    align-items: baseline;
    gap: 16px;
  }

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

@media (min-width: 960px) {
  .page-faq {
    padding-bottom: 88px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-aside) minmax(0, 1fr);
    gap: 48px;
    padding-top: 44px;
    align-items: start;
  }

  .page-faq .faq-side {
    position: sticky;
    top: 96px;
    border-top: 0;
    padding-top: 0;
    border-left: 1px solid var(--line);
    padding-left: 18px;
  }

  .page-faq .faq-index {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__item {
    flex: 1 1 auto;
  }

  .page-faq .faq-index__label {
    display: block;
    padding: 9px 0 9px 12px;
    white-space: normal;
    font-size: 15px;
    background: none;
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    transition: color var(--dur), border-color var(--dur), background var(--dur);
  }

  .page-faq .faq-index__label:hover {
    background: none;
    border-left-color: var(--accent-dim);
  }

  .page-faq .faq-index__label.is-active {
    color: var(--ink-strong);
    background: linear-gradient(90deg, rgba(200, 247, 65, 0.09), transparent 78%);
    border-left-color: var(--accent);
  }

  .page-faq .faq-subpanel {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 24px 32px;
    padding: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .page-faq .faq-item__a {
    animation: none;
  }
}