.page-faq {
  --faq-cut: 18px;
  background: var(--ink);
  color: var(--text);
}

.page-faq h1,
.page-faq h2,
.page-faq h3 {
  font-family: var(--font-head);
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--white);
  margin: 0;
}

.page-faq p {
  margin: 0 0 12px;
}

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

.page-faq a:focus-visible,
.page-faq kbd:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 242, 214, 0.42);
}

.page-faq .faq-link:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏框景 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 40px) 0 clamp(34px, 6vw, 64px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 92% -10%, rgba(63, 242, 214, 0.16), transparent 58%),
    radial-gradient(90% 80% at -8% 110%, rgba(242, 184, 75, 0.1), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(35, 66, 63, 0.5) 1px, transparent 1px),
    linear-gradient(0deg, rgba(35, 66, 63, 0.32) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 76%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 76%);
  pointer-events: none;
}

.page-faq .faq-hero .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}

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

.page-faq .faq-hero h1 {
  font-size: clamp(30px, 5.4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 10px 0 16px;
}

.page-faq .faq-hero .lede {
  max-width: 58ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--text);
  margin: 0 0 22px;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 26px;
}

.page-faq .faq-stats {
  list-style: none;
  margin: 0;
  padding: 1px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
}

.page-faq .faq-stats__item {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 14px;
  background: linear-gradient(180deg, rgba(18, 42, 44, 0.92), rgba(11, 22, 38, 0.92));
}

.page-faq .faq-stats__num {
  font-family: var(--font-mono);
  font-size: clamp(19px, 2.4vw, 23px);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  line-height: 1.1;
}

.page-faq .faq-stats__label {
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  padding: 1px;
  background: linear-gradient(150deg, rgba(63, 242, 214, 0.55), rgba(35, 66, 63, 0.25) 46%, rgba(242, 184, 75, 0.4));
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 24px, 100% 100%, 24px 100%, 0 calc(100% - 24px));
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--panel);
  clip-path: polygon(0 0, calc(100% - 23px) 0, 100% 23px, 100% 100%, 23px 100%, 0 calc(100% - 23px));
}

.page-faq .faq-hero__figure figcaption {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 10px 14px;
  background: rgba(6, 20, 18, 0.94);
  border-top: 1px solid rgba(35, 66, 63, 0.9);
}

/* ---------- 双栏问答区 ---------- */
.page-faq .faq-body {
  padding: clamp(30px, 5vw, 60px) 0 clamp(44px, 7vw, 84px);
  background: linear-gradient(180deg, var(--ink-2), var(--ink) 58%);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 40px);
  align-items: start;
}

.page-faq .faq-index {
  border-top: 2px solid var(--cyan);
  padding-top: 14px;
  min-width: 0;
}

.page-faq .faq-index__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 12px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__list a {
  display: block;
  padding: 10px 12px;
  border-left: 2px solid var(--line);
  color: var(--text);
  font-size: 14px;
  line-height: 1.45;
  text-decoration: none;
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(63, 242, 214, 0.07);
  color: var(--cyan);
}

.page-faq .faq-index__note {
  padding: 14px;
  border: 1px solid var(--line);
  background: rgba(18, 42, 44, 0.75);
  font-size: 13px;
}

.page-faq .faq-index__note p {
  color: var(--muted);
  margin-bottom: 8px;
}

.page-faq .faq-index__note a {
  color: var(--gold);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 184, 75, 0.45);
}

.page-faq .faq-content {
  display: grid;
  gap: clamp(16px, 2.4vw, 22px);
  min-width: 0;
}

.page-faq .faq-block {
  position: relative;
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(18, 42, 44, 0.72), rgba(11, 22, 38, 0.72));
  scroll-margin-top: 128px;
  transition: border-color 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-block::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), transparent 72%);
  opacity: 0.32;
  transition: opacity 0.2s var(--ease);
}

.page-faq .faq-block:hover::before,
.page-faq .faq-block:target::before {
  opacity: 1;
}

.page-faq .faq-block:target {
  border-color: var(--cyan);
  box-shadow: 0 0 0 1px rgba(63, 242, 214, 0.26), 0 0 34px rgba(63, 242, 214, 0.08);
}

.page-faq .faq-block__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 8px;
}

.page-faq .faq-block h2 {
  font-size: clamp(20px, 2.8vw, 28px);
  margin-bottom: 12px;
}

.page-faq .faq-block p {
  font-size: 15.5px;
  line-height: 1.82;
  color: var(--text);
  max-width: 70ch;
}

/* 三步筛选 */
.page-faq .faq-steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-step {
  position: relative;
  padding: 16px 16px 18px;
  border: 1px solid var(--line);
  background: rgba(6, 20, 18, 0.55);
  transition: border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 34px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-step:hover {
  border-color: rgba(63, 242, 214, 0.5);
  transform: translateY(-2px);
}

.page-faq .faq-step__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--gold);
}

.page-faq .faq-step h3 {
  font-size: 17px;
  margin: 6px 0 8px;
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

.page-faq .faq-callout {
  margin-top: 16px;
  padding: 13px 15px;
  font-size: 14px;
  line-height: 1.76;
  color: var(--text);
  background: rgba(242, 184, 75, 0.09);
  border-left: 2px solid var(--gold);
}

/* 对照表配图 */
.page-faq .faq-figure {
  margin: 16px 0 18px;
  border: 1px solid var(--line);
  background: rgba(6, 20, 18, 0.6);
}

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

.page-faq .faq-figure figcaption {
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--muted);
  padding: 9px 12px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-list li {
  position: relative;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-faq .faq-list strong {
  color: var(--white);
  font-weight: 700;
}

/* 键盘操作 */
.page-faq .faq-keys {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

.page-faq .faq-keys__row {
  display: grid;
  grid-template-columns: 78px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-left: 2px solid rgba(63, 242, 214, 0.5);
  background: rgba(6, 20, 18, 0.55);
}

.page-faq .faq-keys__k {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.page-faq .faq-keys kbd {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.2;
  color: var(--white);
  background: var(--panel);
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  padding: 3px 7px;
}

.page-faq .faq-keys__row p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
}

/* 术语表 */
.page-faq .faq-terms__scroll {
  margin: 16px 0;
  overflow-x: auto;
  border: 1px solid var(--line);
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-terms {
  width: 100%;
  min-width: 420px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .faq-terms caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
  padding: 10px 12px;
  background: rgba(11, 22, 38, 0.92);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-terms th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  padding: 10px 12px;
  background: rgba(18, 42, 44, 0.92);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-terms td {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(35, 66, 63, 0.7);
}

.page-faq .faq-terms tbody tr:nth-child(even) {
  background: rgba(18, 42, 44, 0.45);
}

.page-faq .faq-terms td.mono {
  font-family: var(--font-mono);
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

/* 刷新说明 */
.page-faq .faq-panels {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 16px 0;
}

.page-faq .faq-panel {
  padding: 16px;
  border: 1px solid var(--line);
  background: rgba(6, 20, 18, 0.55);
}

.page-faq .faq-panel h3 {
  font-size: 16px;
  margin: 10px 0 8px;
}

.page-faq .faq-panel p {
  margin: 0;
  font-size: 14px;
  line-height: 1.76;
  color: var(--muted);
}

/* 联系支持 */
.page-faq .faq-support {
  margin: 16px 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-support__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding: 12px 14px;
  background: rgba(6, 20, 18, 0.76);
}

.page-faq .faq-support dt {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-support dd {
  margin: 0;
  font-size: 15px;
  overflow-wrap: anywhere;
}

.page-faq .faq-support dd a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 242, 214, 0.4);
}

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

.page-faq .faq-related {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed rgba(35, 66, 63, 0.9);
}

.page-faq .faq-related a {
  display: inline-block;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(18, 42, 44, 0.72);
  transition: border-color 0.18s var(--ease), color 0.18s var(--ease);
}

.page-faq .faq-related a:hover,
.page-faq .faq-related a:focus-visible {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 断点 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-support__row {
    grid-template-columns: 110px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
  }
}

@media (min-width: 700px) {
  .page-faq .faq-panels {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body__grid {
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: 116px;
  }
}

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

  .page-faq .faq-step:hover {
    transform: none;
  }
}