.page-faq {
  --faq-panel: var(--ink-850);
  --faq-soft: rgba(8, 18, 15, .55);
  --faq-gap: clamp(16px, 2.4vw, 28px);
  background: var(--ink-950);
  color: var(--slate-200);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-faq section[id] {
  scroll-margin-top: 96px;
}

.page-faq h1,
.page-faq h2 {
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--paper-100);
  margin: 0;
}

.page-faq h1 {
  font-size: clamp(32px, 7vw, 72px);
  line-height: 1;
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq h2 {
  font-size: clamp(24px, 3.8vw, 44px);
  line-height: 1.12;
  margin-bottom: clamp(12px, 1.8vw, 18px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(20px, 3vw, 32px) clamp(40px, 6vw, 76px);
  background:
    radial-gradient(90% 120% at 88% 0%, rgba(61, 242, 210, .1), transparent 58%),
    radial-gradient(70% 90% at 6% 20%, rgba(22, 71, 60, .55), transparent 62%);
}

.page-faq .faq-crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--moss-400);
  margin-bottom: clamp(22px, 3.6vw, 40px);
}

.page-faq .faq-crumb .breadcrumb__link {
  color: var(--moss-400);
  text-decoration: none;
  transition: color .18s ease;
}

.page-faq .faq-crumb .breadcrumb__link:hover {
  color: var(--cyan-400);
}

.page-faq .faq-crumb__now {
  color: var(--slate-200);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 60px);
  align-items: start;
}

.page-faq .faq-hero__eyebrow,
.page-faq .faq-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan-400);
  margin: 0 0 14px;
}

.page-faq .faq-hero__lead {
  font-size: clamp(15px, 1.5vw, 18px);
  line-height: 1.85;
  color: var(--slate-200);
  max-width: 36em;
  margin: 0 0 clamp(22px, 3vw, 32px);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--slate-200);
  font-size: 14px;
  text-decoration: none;
  transition: border-color .18s ease, color .18s ease, background .18s ease;
}

.page-faq .faq-jump a::after {
  content: "↓";
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan-400);
}

.page-faq .faq-jump a:hover {
  border-color: var(--cyan-400);
  color: var(--paper-100);
  background: rgba(61, 242, 210, .07);
}

.page-faq .faq-meter {
  position: relative;
  border: 1px solid var(--line-dark);
  border-radius: calc(var(--radius) + 6px);
  padding: clamp(20px, 3vw, 32px);
  background:
    repeating-linear-gradient(90deg, var(--line-dark-soft) 0 1px, transparent 1px 34px),
    linear-gradient(160deg, var(--teal-700), var(--ink-850) 62%);
  overflow: hidden;
}

.page-faq .faq-meter::after {
  content: "";
  position: absolute;
  right: -40px;
  bottom: -60px;
  width: 180px;
  height: 180px;
  border-radius: 46% 54% 62% 38% / 52% 44% 56% 48%;
  background: rgba(61, 242, 210, .12);
}

.page-faq .faq-meter__label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--amber-500);
}

.page-faq .faq-meter__num {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(44px, 8.5vw, 82px);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--paper-100);
}

.page-faq .faq-meter__num .dot {
  color: var(--amber-500);
}

.page-faq .faq-meter__meta {
  position: relative;
  z-index: 1;
  margin: 0 0 18px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--slate-200);
  max-width: 30em;
}

.page-faq .faq-meter__link {
  position: relative;
  z-index: 1;
  display: inline-block;
  font-size: 13px;
  font-family: var(--font-mono);
  letter-spacing: .06em;
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(61, 242, 210, .45);
  padding-bottom: 2px;
  transition: border-color .18s ease;
}

.page-faq .faq-meter__link:hover {
  border-color: var(--cyan-400);
}

/* ---------- 版本对照 ---------- */
.page-faq .faq-version {
  padding-block: clamp(36px, 6vw, 72px);
  border-top: 1px solid var(--line-dark-soft);
}

.page-faq .faq-version__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  align-items: center;
  margin-bottom: clamp(24px, 4vw, 40px);
}

.page-faq .faq-version__lead {
  margin: 0;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--slate-200);
  max-width: 40em;
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line-dark);
  border-radius: 16px;
  object-fit: cover;
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--moss-400);
}

.page-faq .faq-checker {
  padding: clamp(16px, 2.6vw, 28px);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius);
  background: var(--faq-panel);
}

.page-faq .faq-checker__grid {
  display: grid;
  gap: 10px;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-check {
  display: block;
  cursor: pointer;
}

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

.page-faq .faq-check__body {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  height: 100%;
  padding: 14px 40px 16px 14px;
  border: 1px solid var(--line-dark-soft);
  border-radius: 14px;
  background: var(--faq-soft);
  transition: border-color .18s ease, background .18s ease;
}

.page-faq .faq-check:hover .faq-check__body {
  border-color: var(--moss-400);
}

.page-faq .faq-check__input:checked + .faq-check__body {
  border-color: var(--cyan-400);
  background: rgba(22, 71, 60, .6);
}

.page-faq .faq-check__input:focus-visible + .faq-check__body {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.page-faq .faq-check__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--amber-500);
}

.page-faq .faq-check__title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--paper-100);
}

.page-faq .faq-check__note {
  font-size: 13px;
  line-height: 1.65;
  color: var(--moss-400);
}

.page-faq .faq-check__input:checked + .faq-check__body .faq-check__note {
  color: var(--slate-200);
}

.page-faq .faq-check__mark {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 14px;
  height: 14px;
  border: 1px solid var(--moss-400);
  border-radius: 3px;
  transition: background .18s ease, border-color .18s ease;
}

.page-faq .faq-check__mark::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 4px;
  height: 8px;
  border-right: 2px solid var(--ink-950);
  border-bottom: 2px solid var(--ink-950);
  transform: rotate(42deg) scale(0);
  transform-origin: center;
  transition: transform .18s ease;
}

.page-faq .faq-check__input:checked + .faq-check__body .faq-check__mark {
  background: var(--cyan-400);
  border-color: var(--cyan-400);
}

.page-faq .faq-check__input:checked + .faq-check__body .faq-check__mark::after {
  transform: rotate(42deg) scale(1);
}

.page-faq .faq-checker__done {
  display: none;
  align-items: center;
  gap: 10px;
  margin: clamp(16px, 2.6vw, 22px) 0 0;
  padding: 12px 18px;
  border: 1px solid var(--cyan-400);
  border-radius: 999px;
  background: rgba(61, 242, 210, .1);
  color: var(--cyan-400);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-checker:not(:has(.faq-check__input:not(:checked))) .faq-checker__done {
  display: flex;
}

.page-faq .faq-checker__tick {
  font-family: var(--font-mono);
  font-weight: 700;
}

/* ---------- 分类问答 ---------- */
.page-faq .faq-topics {
  padding-block: clamp(36px, 6vw, 76px);
  background: linear-gradient(180deg, var(--ink-950), #0A1714 55%, var(--ink-950));
  border-top: 1px solid var(--line-dark-soft);
}

.page-faq .faq-topics__title {
  max-width: 18em;
}

.page-faq .faq-topics__lead {
  margin: 0 0 clamp(22px, 3.4vw, 36px);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: var(--slate-200);
  max-width: 42em;
}

.page-faq .faq-tabs__list {
  display: grid;
  gap: 8px;
  grid-template-columns: minmax(0, 1fr);
  padding-bottom: clamp(14px, 2vw, 20px);
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--line-dark-soft);
}

.page-faq .faq-tabs__tab {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 16px;
  border: 1px solid var(--line-dark-soft);
  border-radius: 12px;
  background: transparent;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.4;
  text-align: left;
  color: var(--moss-400);
  cursor: pointer;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

.page-faq .faq-tabs__tab:hover {
  color: var(--paper-100);
  border-color: var(--moss-400);
}

.page-faq .faq-tabs__tab:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.page-faq .faq-tabs__tab[aria-selected="true"] {
  color: var(--cyan-400);
  border-color: var(--cyan-400);
  background: rgba(61, 242, 210, .08);
}

.page-faq .faq-tabs__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  padding: 2px 6px;
  border: 1px solid rgba(242, 178, 60, .5);
  border-radius: 6px;
  color: var(--amber-500);
}

.page-faq .faq-tabs__panel[hidden] {
  display: none;
}

.page-faq .faq-tabs__panel:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 4px;
  border-radius: 12px;
}

.page-faq .faq-figure--panel {
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-figure--panel img {
  max-height: 300px;
}

.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--line-dark-soft);
  border-radius: 14px;
  background: var(--faq-panel);
  overflow: hidden;
  transition: border-color .18s ease;
}

.page-faq .faq-item[open] {
  border-color: var(--line-dark);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper-100);
}

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

.page-faq .faq-item__q:hover {
  color: var(--cyan-400);
}

.page-faq .faq-item__q:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: -3px;
}

.page-faq .faq-item__idx {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--amber-500);
  padding-top: 4px;
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-item__icon {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 4px;
  border: 1px solid var(--moss-400);
  border-radius: 4px;
  transition: border-color .18s ease;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--moss-400);
  transition: opacity .18s ease, background .18s ease;
}

.page-faq .faq-item__icon::before {
  left: 3px;
  right: 3px;
  top: 6px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  top: 3px;
  bottom: 3px;
  left: 6px;
  width: 1.5px;
}

.page-faq .faq-item[open] .faq-item__icon {
  border-color: var(--cyan-400);
}

.page-faq .faq-item[open] .faq-item__icon::before {
  background: var(--cyan-400);
}

.page-faq .faq-item[open] .faq-item__icon::after {
  opacity: 0;
}

.page-faq .faq-item__a {
  padding: 0 18px 18px 18px;
  color: var(--slate-200);
  font-size: 15px;
  line-height: 1.85;
  animation: faqReveal .24s ease-out both;
}

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

.page-faq .faq-item__a p + p {
  margin-top: .9em;
}

.page-faq .faq-item__a a {
  color: var(--cyan-400);
  text-decoration: underline;
  text-underline-offset: 3px;
}

@keyframes faqReveal {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  margin-top: clamp(30px, 5vw, 56px);
  padding-block: clamp(40px, 6vw, 80px);
  background: var(--paper-100);
  color: var(--ink-950);
}

.page-faq .faq-support__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  align-items: start;
}

.page-faq .faq-support h2 {
  color: var(--ink-950);
}

.page-faq .faq-support__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan-700);
}

.page-faq .faq-support__lead {
  margin: 0 0 clamp(18px, 2.6vw, 24px);
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.85;
  color: #2A3B34;
  max-width: 38em;
}

.page-faq .faq-support__checklist {
  margin: 0 0 clamp(22px, 3vw, 30px);
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .faq-support__checklist li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ink-950);
}

.page-faq .faq-support__checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 12px;
  height: 12px;
  border: 1px solid var(--cyan-700);
  border-radius: 3px;
  background: rgba(11, 107, 92, .08);
}

.page-faq .faq-support__cta {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  border-radius: 999px;
  background: var(--amber-500);
  color: var(--ink-950);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: background .18s ease, transform .18s ease;
}

.page-faq .faq-support__cta::after {
  content: "→";
  font-family: var(--font-mono);
}

.page-faq .faq-support__cta:hover {
  background: var(--amber-100);
}

.page-faq .faq-support__cta:focus-visible {
  outline: 3px solid var(--cyan-700);
  outline-offset: 3px;
}

.page-faq .faq-support__card {
  padding: clamp(18px, 3vw, 30px);
  border: 1px solid var(--paper-300);
  border-radius: var(--radius);
  background: #FBF8F1;
}

.page-faq .faq-support__row {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 0;
  border-bottom: 1px dashed var(--paper-300);
}

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

.page-faq .faq-support__row:last-of-type {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-support__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan-700);
}

.page-faq .faq-support__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 2vw, 21px);
  line-height: 1.5;
  color: var(--ink-950);
  overflow-wrap: anywhere;
}

.page-faq .faq-support__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--paper-300);
  font-size: 13px;
  line-height: 1.7;
  color: #4A5B53;
}

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, .66fr);
    align-items: center;
  }

  .page-faq .faq-version__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  }

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  }
}

@media (min-width: 720px) {
  .page-faq .faq-tabs__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-checker__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-checker__grid {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}