.page-faq {
  --faq-gap: clamp(52px, 7vw, 96px);
  --faq-hair: 1px solid rgba(220, 229, 223, 0.14);
  --faq-hair-dark: 1px solid rgba(10, 46, 39, 0.14);
  display: block;
  background: var(--pitch-950);
  color: var(--paper-50);
  overflow-x: hidden;
}

/* ---------- 通用页内元素 ---------- */

.page-faq .eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan-400);
}

.page-faq .eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  flex: none;
  background: currentColor;
}

.page-faq .faq-h2 {
  margin: 10px 0 0;
  font-size: clamp(24px, 3.6vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  font-weight: 700;
  color: var(--paper-50);
}

.page-faq .faq-h2--dark {
  color: var(--pitch-950);
}

.page-faq .faq-head {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(24px, 3vw, 40px);
}

.page-faq .faq-head__note {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: rgba(245, 248, 244, 0.68);
}

@media (min-width: 880px) {
  .page-faq .faq-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 34ch);
    align-items: end;
    gap: 44px;
  }
}

.page-faq .faq-head--dark .faq-head__note {
  color: rgba(245, 248, 244, 0.68);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(20px, 3vw, 34px) 0 clamp(48px, 7vw, 92px);
  background:
    radial-gradient(120% 88% at 84% -14%, rgba(59, 240, 206, 0.18), transparent 58%),
    radial-gradient(90% 72% at 4% 116%, rgba(255, 138, 61, 0.13), transparent 60%),
    var(--pitch-950);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  z-index: 0;
  right: -12%;
  bottom: -34%;
  width: 74%;
  height: 72%;
  background: linear-gradient(158deg, rgba(20, 82, 69, 0.9), rgba(10, 46, 39, 0));
  clip-path: polygon(0 34%, 100% 0, 100% 100%, 0 100%);
  transform: rotate(-5deg);
  pointer-events: none;
}

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

.page-faq .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 clamp(26px, 4vw, 48px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(245, 248, 244, 0.5);
}

.page-faq .breadcrumbs a {
  color: rgba(245, 248, 244, 0.72);
  text-decoration: none;
}

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

.page-faq .breadcrumbs__sep {
  color: rgba(59, 240, 206, 0.6);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 52px);
}

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7.2fr) minmax(0, 4fr);
    align-items: end;
  }
}

.page-faq .faq-hero .display {
  margin: 12px 0 0;
  font-size: clamp(32px, 6vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 700;
  color: var(--paper-50);
}

.page-faq .faq-hero__lede {
  max-width: 44ch;
  margin: 20px 0 0;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(245, 248, 244, 0.76);
}

.page-faq .faq-hero__metrics {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 4vw, 44px);
  margin: clamp(24px, 3.4vw, 36px) 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: var(--faq-hair);
}

.page-faq .faq-hero__metrics .metric {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-direction: row;
}

.page-faq .faq-hero__metrics .metric__num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 600;
  color: var(--amber-500);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.page-faq .faq-hero__metrics .metric__label {
  font-size: 13px;
  color: rgba(245, 248, 244, 0.58);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(24px, 3vw, 36px);
}

.page-faq .faq-hero__side {
  padding: 20px 20px 18px;
  background: rgba(10, 46, 39, 0.62);
  border-top: 3px solid var(--cyan-400);
  border-right: var(--faq-hair);
  border-bottom: var(--faq-hair);
  border-left: var(--faq-hair);
}

.page-faq .faq-hero__side-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(245, 248, 244, 0.55);
}

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

.page-faq .faq-jump a {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  font-size: 15px;
  color: rgba(245, 248, 244, 0.82);
  text-decoration: none;
  border-bottom: 1px solid rgba(220, 229, 223, 0.1);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--cyan-400);
}

.page-faq .faq-jump .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate-600);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__side-note {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid rgba(220, 229, 223, 0.1);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate-600);
}

/* ---------- 三步准备 ---------- */

.page-faq .faq-start {
  padding: var(--faq-gap) 0;
  background: var(--paper-50);
  color: var(--pitch-800);
}

.page-faq .faq-start .eyebrow {
  color: var(--pitch-600);
}

.page-faq .faq-start .faq-h2 {
  color: var(--pitch-950);
}

.page-faq .faq-start .faq-head__note {
  color: var(--slate-600);
}

.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(10, 46, 39, 0.2);
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 16px;
  padding: 22px 0;
  border-bottom: var(--faq-hair-dark);
}

.page-faq .faq-step__idx {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 28px);
  line-height: 1.1;
  letter-spacing: 0.04em;
  color: var(--pitch-600);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 700;
  color: var(--pitch-950);
}

.page-faq .faq-step__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--slate-600);
}

@media (min-width: 760px) {
  .page-faq .faq-step {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 32px;
    padding: 26px 0;
  }
}

/* ---------- 两版并列区 ---------- */

.page-faq .faq-compare {
  padding: var(--faq-gap) 0;
  background:
    radial-gradient(78% 58% at 100% 0%, rgba(59, 240, 206, 0.1), transparent 62%),
    var(--pitch-800);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-compare__figure {
  margin: 0 0 clamp(26px, 3.4vw, 44px);
}

.page-faq .media__frame {
  overflow: hidden;
  border: var(--faq-hair);
  background: var(--pitch-950);
}

.page-faq .media__frame--wide {
  border-left: 3px solid var(--cyan-400);
}

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

.page-faq .media__caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.03em;
  color: rgba(245, 248, 244, 0.48);
}

.page-faq .faq-compare__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
}

.page-faq .faq-ver {
  padding: clamp(16px, 2vw, 24px);
  background: rgba(4, 26, 22, 0.62);
  border: var(--faq-hair);
}

.page-faq .faq-ver--revised {
  border-top: 3px solid var(--cyan-400);
}

.page-faq .faq-ver__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-bottom: 12px;
  border-bottom: var(--faq-hair);
}

.page-faq .faq-ver__name {
  margin: 0;
  font-size: 17px;
  font-weight: 700;
  color: var(--paper-50);
}

.page-faq .faq-ver__ver {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--slate-600);
}

.page-faq .faq-fields-list {
  margin: 0;
  padding: 0;
}

.page-faq .faq-field-row {
  display: grid;
  grid-template-columns: minmax(0, 8ch) minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 8px;
  border-bottom: 1px solid rgba(220, 229, 223, 0.09);
}

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

.page-faq .faq-field-row dt {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: rgba(245, 248, 244, 0.5);
}

.page-faq .faq-field-row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--paper-50);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-field-row.is-diff {
  border: 3px solid var(--amber-500);
  background: rgba(255, 138, 61, 0.1);
  padding: 8px 6px;
}

.page-faq .faq-field-row.is-diff dt {
  color: var(--amber-300);
}

.page-faq .faq-field-row.is-diff dd {
  color: var(--amber-500);
  font-weight: 600;
}

.page-faq .faq-score {
  font-size: clamp(20px, 2.4vw, 26px);
  letter-spacing: 0.02em;
}

.page-faq .faq-diff-note {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 14px 18px;
  max-width: 72ch;
  border-left: 3px solid var(--amber-500);
  background: rgba(255, 138, 61, 0.08);
  font-size: 15px;
  line-height: 1.75;
  color: rgba(245, 248, 244, 0.84);
}

.page-faq .faq-compare__more {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 248, 244, 0.62);
}

.page-faq .faq-compare__more a {
  color: var(--cyan-400);
  text-decoration: none;
  border-bottom: 1px solid rgba(59, 240, 206, 0.4);
}

.page-faq .faq-compare__more a:hover {
  color: var(--cyan-200);
}

@media (min-width: 860px) {
  .page-faq .faq-compare__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 32px;
  }

  .page-faq .faq-compare__grid::before {
    content: "";
    position: absolute;
    top: 6px;
    bottom: 6px;
    left: 50%;
    width: 1px;
    background: rgba(220, 229, 223, 0.24);
    transform: translateX(-0.5px);
  }
}

/* ---------- 字段释义 ---------- */

.page-faq .faq-fields {
  padding: var(--faq-gap) 0;
  background:
    radial-gradient(66% 52% at 0% 100%, rgba(59, 240, 206, 0.09), transparent 62%),
    var(--pitch-950);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-fields__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 48px);
}

@media (min-width: 940px) {
  .page-faq .faq-fields__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: var(--faq-hair);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-faq .faq-table__caption {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(245, 248, 244, 0.5);
  border-bottom: var(--faq-hair);
}

.page-faq .faq-table th {
  padding: 12px 14px;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--cyan-400);
  background: var(--pitch-600);
  border: 1px solid rgba(220, 229, 223, 0.14);
  white-space: nowrap;
}

.page-faq .faq-table td,
.page-faq .faq-table tbody th {
  padding: 14px;
  border: 1px solid rgba(220, 229, 223, 0.12);
  text-align: left;
  vertical-align: top;
  line-height: 1.65;
  font-weight: 400;
  color: rgba(245, 248, 244, 0.8);
}

.page-faq .faq-table tbody th {
  font-family: var(--font-mono);
  color: var(--paper-50);
  white-space: nowrap;
  background: rgba(10, 46, 39, 0.5);
}

.page-faq .faq-table tbody tr:nth-child(even) td {
  background: rgba(10, 46, 39, 0.34);
}

.page-faq .faq-table td:last-child {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--cyan-200);
  white-space: nowrap;
}

.page-faq .faq-example {
  margin-top: 20px;
  border: var(--faq-hair);
  background: rgba(10, 46, 39, 0.4);
}

.page-faq .faq-example > summary {
  list-style: none;
  cursor: pointer;
  padding: 14px 18px;
  font-size: 14px;
  font-weight: 600;
  color: var(--paper-50);
}

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

.page-faq .faq-example[open] > summary {
  box-shadow: inset 3px 0 0 var(--cyan-400);
}

.page-faq .faq-example .expandable__body {
  padding: 0 18px 16px;
}

.page-faq .faq-example__line {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: rgba(245, 248, 244, 0.72);
  font-variant-numeric: tabular-nums;
}

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

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

.page-faq .faq-fields__tip {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: var(--faq-hair);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 248, 244, 0.62);
}

/* ---------- 分组问答 ---------- */

.page-faq .faq-qa {
  padding: var(--faq-gap) 0;
  background: var(--paper-50);
  color: var(--pitch-800);
}

.page-faq .faq-qa__inner {
  display: grid;
  gap: clamp(30px, 4vw, 46px);
  max-width: 60rem;
}

.page-faq .faq-qa .eyebrow {
  color: var(--pitch-600);
}

.page-faq .faq-group {
  display: grid;
  gap: 0;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 4px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(10, 46, 39, 0.22);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--pitch-600);
}

.page-faq .faq-group__title::before {
  content: "";
  width: 8px;
  height: 8px;
  flex: none;
  background: var(--cyan-400);
}

.page-faq .faq-q {
  border-bottom: var(--faq-hair-dark);
  background: transparent;
}

.page-faq .faq-q > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 4px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--pitch-950);
}

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

.page-faq .faq-q > summary::before {
  content: "+";
  flex: none;
  width: 1.2em;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.35;
  color: var(--pitch-600);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q[open] > summary::before {
  content: "\2013";
  color: var(--pitch-950);
}

.page-faq .faq-q[open] {
  border-left: 3px solid var(--cyan-400);
  padding-left: 14px;
}

.page-faq .faq-q__body {
  padding: 0 4px 18px 4px;
  max-width: 62ch;
}

.page-faq .faq-q__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate-600);
}

/* ---------- 求助区 ---------- */

.page-faq .faq-help {
  padding: clamp(48px, 6vw, 84px) 0;
  background:
    radial-gradient(62% 62% at 92% 0%, rgba(255, 138, 61, 0.13), transparent 62%),
    var(--pitch-800);
  border-top: var(--faq-hair);
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 44px);
}

@media (min-width: 880px) {
  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: start;
  }
}

.page-faq .faq-help__lede {
  max-width: 46ch;
  margin: 18px 0 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(245, 248, 244, 0.74);
}

.page-faq .faq-help__list {
  margin: clamp(22px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
  border-top: var(--faq-hair);
}

.page-faq .faq-help__list li {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-bottom: var(--faq-hair);
  font-size: 14px;
  line-height: 1.7;
  color: rgba(245, 248, 244, 0.72);
}

.page-faq .faq-help__list .num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber-500);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-help .btn {
  margin-top: clamp(22px, 3vw, 30px);
}

.page-faq .faq-help__card {
  padding: 20px;
  background: rgba(4, 26, 22, 0.55);
  border: var(--faq-hair);
  border-top: 3px solid var(--amber-500);
}

.page-faq .faq-help__card-label {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(245, 248, 244, 0.5);
}

.page-faq .faq-help__card-label:not(:first-child) {
  margin-top: 20px;
}

.page-faq .faq-help__card-value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(15px, 1.8vw, 18px);
  color: var(--paper-50);
  word-break: break-word;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-help__card-note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: var(--faq-hair);
  font-size: 14px;
  line-height: 1.72;
  color: rgba(245, 248, 244, 0.65);
}

/* ---------- 动效降级 ---------- */

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump a,
  .page-faq .faq-q > summary::before {
    transition: none;
  }
}