.page-faq {
  --faq-warm: var(--orange);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(118px, 19vw, 236px) 0 clamp(44px, 6vw, 78px);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -14%;
  right: -14%;
  width: min(78vw, 700px);
  height: 130%;
  background: linear-gradient(164deg, rgba(23, 224, 122, .17), rgba(200, 255, 61, .06) 54%, transparent 80%);
  clip-path: polygon(26% 0, 100% 0, 76% 100%, 0 100%);
  z-index: -1;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -14%;
  bottom: -34%;
  width: min(64vw, 540px);
  height: 82%;
  border: 1px solid var(--line-soft);
  transform: rotate(-8deg);
  z-index: -1;
  pointer-events: none;
}

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

.page-faq .faq-hero__title {
  margin: var(--sp-3) 0 0;
  display: flex;
  flex-direction: column;
  font-family: var(--font-display);
  line-height: .92;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__title-main {
  font-size: clamp(50px, 12.5vw, 128px);
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-hero__title-sub {
  margin-top: 6px;
  font-size: clamp(20px, 4.4vw, 40px);
  font-weight: 300;
  color: var(--lime);
  letter-spacing: .01em;
}

.page-faq .faq-hero__lede {
  margin: var(--sp-4) 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-keys {
  list-style: none;
  margin: clamp(28px, 4.5vw, 54px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-keys__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--sp-3) var(--sp-3) var(--sp-4);
  background: var(--ink-900);
}

.page-faq .faq-keys__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums slashed-zero;
  font-weight: 700;
  font-size: clamp(26px, 7vw, 40px);
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-keys__unit {
  margin-left: 3px;
  font-size: .5em;
  font-weight: 400;
  color: var(--green);
}

.page-faq .faq-keys__label {
  font-size: 12px;
  letter-spacing: .05em;
  line-height: 1.4;
  color: var(--mist);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

/* ---------- 通用标题 ---------- */
.page-faq .faq-h2 {
  margin: var(--sp-2) 0 var(--sp-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 4.6vw, 44px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .prose a {
  color: var(--green);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 速查表 ---------- */
.page-faq .faq-refresh {
  display: grid;
  gap: var(--sp-4);
  margin-top: var(--sp-4);
}

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

.page-faq .faq-refresh__fig .media__caption {
  margin-top: 8px;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line);
  background: var(--ink-800);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14.5px;
  line-height: 1.45;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 12px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
  white-space: nowrap;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-table tbody th {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  color: var(--white);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  color: var(--mist);
}

.page-faq .faq-table tbody tr:last-child th,
.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody tr {
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(23, 224, 122, .06);
}

.page-faq .faq-meter {
  display: block;
  width: 100%;
  min-width: 76px;
  height: 8px;
  background: var(--ink-700);
  position: relative;
}

.page-faq .faq-meter::after {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 14%;
  background: linear-gradient(90deg, var(--deep-green), var(--green));
}

.page-faq .faq-meter--s1::after { width: 14%; }
.page-faq .faq-meter--s2::after { width: 30%; }
.page-faq .faq-meter--s3::after { width: 46%; }
.page-faq .faq-meter--s4::after {
  width: 72%;
  background: linear-gradient(90deg, var(--green), var(--lime));
}
.page-faq .faq-meter--s5::after {
  width: 100%;
  background: linear-gradient(90deg, var(--green), var(--lime) 62%, var(--orange));
}

/* ---------- 主题问答 ---------- */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--sp-4) 0;
}

.page-faq .faq-tag {
  display: inline-block;
  padding: 7px 12px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  color: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-topics__fig {
  margin: 0 0 var(--sp-4) auto;
  width: min(100%, 640px);
}

.page-faq .faq-topics__fig .media__caption {
  margin-top: 8px;
}

.page-faq .faq-groups {
  display: grid;
  gap: var(--sp-4);
}

.page-faq .faq-group {
  border-top: 1px solid var(--line);
  padding-top: var(--sp-3);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--sp-2);
}

.page-faq .faq-group__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--line);
  color: var(--green);
  background: var(--ink-800);
}

.page-faq .faq-group__name {
  flex: 1 1 auto;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(18px, 2.8vw, 23px);
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-group__count {
  flex: none;
  padding: 3px 8px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mist);
}

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

.page-faq .faq-item > summary {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 13px 30px 13px 16px;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.45;
  color: var(--white);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item > summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  width: 2px;
  height: 14px;
  background: var(--line);
  transition: background var(--dur) var(--ease), height var(--dur) var(--ease), top var(--dur) var(--ease);
}

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--green);
}

.page-faq .faq-item[open] > summary {
  color: var(--lime);
}

.page-faq .faq-item[open] > summary::before {
  top: 13px;
  height: 20px;
  background: var(--lime);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  color: var(--lime);
}

.page-faq .faq-item__body {
  padding: 0 30px 16px 16px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0 0 8px;
}

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

/* ---------- 纠错三步 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line);
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--sp-3);
  align-items: start;
  padding: var(--sp-4) var(--sp-3);
  background: var(--ink-900);
}

.page-faq .faq-steps__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums slashed-zero;
  font-weight: 700;
  font-size: clamp(30px, 7vw, 44px);
  line-height: .9;
  color: var(--faq-warm);
}

.page-faq .faq-steps__body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
  letter-spacing: .01em;
  color: var(--white);
}

.page-faq .faq-steps__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 误解对照 ---------- */
.page-faq .faq-myths {
  list-style: none;
  margin: var(--sp-4) 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-myths__row {
  display: grid;
  gap: var(--sp-2);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-myths__wrong,
.page-faq .faq-myths__right {
  margin: 0;
  padding-left: 12px;
  font-size: 15px;
  line-height: 1.65;
}

.page-faq .faq-myths__wrong {
  border-left: 2px solid var(--line);
  color: var(--mist);
}

.page-faq .faq-myths__right {
  border-left: 2px solid var(--lime);
  color: var(--white);
}

.page-faq .faq-myths__mark {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 6px;
  border: 1px solid currentColor;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .14em;
  vertical-align: 2px;
}

.page-faq .faq-myths__wrong .faq-myths__mark { color: var(--mist); }
.page-faq .faq-myths__right .faq-myths__mark { color: var(--lime); }

/* ---------- 末尾出口 ---------- */
.page-faq .faq-outro {
  display: grid;
  gap: var(--sp-4);
  padding: clamp(26px, 4.5vw, 48px);
  background: linear-gradient(150deg, var(--ink-800), var(--ink-900) 72%);
}

.page-faq .faq-outro .faq-h2 {
  margin-top: var(--sp-2);
}

.page-faq .faq-outro__side {
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.page-faq .faq-contact {
  margin: 0;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px var(--sp-3);
  font-size: 14.5px;
}

.page-faq .faq-contact dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--mist);
  padding-top: 3px;
  white-space: nowrap;
}

.page-faq .faq-contact dd {
  margin: 0;
  color: var(--white);
  line-height: 1.55;
  word-break: break-word;
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

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

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

@media (min-width: 900px) {
  .page-faq .faq-refresh {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--sp-5);
    align-items: start;
  }

  .page-faq .faq-groups {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--sp-5) var(--sp-5);
  }

  .page-faq .faq-myths__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
    gap: var(--sp-5);
    align-items: start;
  }

  .page-faq .faq-outro {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    gap: var(--sp-6);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__lede {
    max-width: 54ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item > summary::before,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-tag,
  .page-faq .faq-table tbody tr {
    transition: none;
  }
}