.page-faq {
  --faq-gap: clamp(18px, 3.4vw, 36px);
  --faq-panel: rgba(18, 35, 61, .78);
  --faq-hair: rgba(46, 74, 99, .45);
  --faq-rule: rgba(242, 180, 65, .38);
  display: block;
  overflow-x: hidden;
  color: var(--warm-white);
  background:
    radial-gradient(760px 520px at 88% 2%, rgba(242, 180, 65, .09), transparent 62%),
    radial-gradient(680px 620px at 4% 74%, rgba(111, 155, 209, .09), transparent 64%),
    var(--ink-deep);
}

.page-faq .canvas {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: clamp(18px, 4vw, 32px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(24px, 4.2vw, 56px) clamp(22px, 3.6vw, 42px);
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--rail-line), transparent 68%);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(18px, 3vw, 30px);
}

.page-faq .faq-hero-main {
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: .3em 0 0;
  max-width: 22ch;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(29px, 5.1vw, 56px);
  line-height: 1.17;
  letter-spacing: -.02em;
  color: var(--warm-white);
}

.page-faq .faq-hero .lede {
  margin: clamp(14px, 2vw, 20px) 0 0;
  max-width: 60ch;
  font-size: clamp(16px, 1.6vw, 17.5px);
  line-height: 1.9;
  color: var(--text-soft);
}

.page-faq .faq-hero-side {
  min-width: 0;
  padding-top: clamp(16px, 2.6vw, 22px);
  border-top: 1px solid var(--faq-hair);
}

.page-faq .faq-facts {
  display: grid;
  gap: 1px;
  margin: 12px 0 0;
  border: 1px solid var(--faq-hair);
  background: var(--faq-hair);
}

.page-faq .faq-facts > div {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  background: var(--faq-panel);
}

.page-faq .faq-facts dt {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--text-dim);
}

.page-faq .faq-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--gold);
}

.page-faq .faq-jump {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 3.4vw, 36px);
  border: 1px solid var(--faq-hair);
  background: var(--faq-hair);
}

.page-faq .faq-jump-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: rgba(10, 22, 38, .62);
  color: var(--text-soft);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  text-decoration: none;
  transition: background-color .2s var(--ease-out), color .2s var(--ease-out);
}

.page-faq .faq-jump-link:hover {
  background: rgba(242, 180, 65, .08);
  color: var(--gold-high);
}

.page-faq .faq-jump-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .faq-jump-go {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--gold);
}

/* ---------- 区块通用 ---------- */
.page-faq .faq-section {
  position: relative;
  padding-block: clamp(38px, 6vw, 84px);
}

.page-faq .section-head > p:not(.section-kicker) {
  max-width: 64ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--text-dim);
}

.page-faq .faq-section h2,
.page-faq .faq-closing h2 {
  margin: .24em 0 .55em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(22px, 3.1vw, 34px);
  line-height: 1.26;
  letter-spacing: -.02em;
  color: var(--warm-white);
}

/* ---------- 分组标签 ---------- */
.page-faq .faq-tabs {
  margin-top: clamp(22px, 3.2vw, 34px);
}

.page-faq .faq-tablist {
  display: flex;
  overflow-x: auto;
  border-bottom: 1px solid var(--faq-hair);
  scrollbar-width: none;
}

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

.page-faq .faq-tab {
  flex: 0 0 auto;
  appearance: none;
  margin-bottom: -1px;
  padding: 14px 20px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: var(--text-dim);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 15px;
  letter-spacing: .01em;
  white-space: nowrap;
  cursor: pointer;
  transition: color .2s var(--ease-out), border-color .2s var(--ease-out), background-color .2s var(--ease-out);
}

.page-faq .faq-tab:hover {
  color: var(--warm-white);
}

.page-faq .faq-tab[aria-selected="true"] {
  border-bottom-color: var(--gold);
  background: rgba(242, 180, 65, .06);
  color: var(--gold);
}

.page-faq .faq-tab:focus-visible {
  outline: 2px solid var(--gold-high);
  outline-offset: -2px;
}

.page-faq .faq-panel {
  padding-top: clamp(8px, 1.6vw, 16px);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 17px 2px;
  list-style: none;
  cursor: pointer;
  color: var(--warm-white);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(15.5px, 1.7vw, 17.5px);
  line-height: 1.6;
  transition: color .2s var(--ease-out);
}

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

.page-faq .faq-q:hover {
  color: var(--gold-high);
}

.page-faq .faq-q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1.15;
  color: var(--gold);
}

.page-faq .faq-item[open] > .faq-q::after {
  content: "−";
}

.page-faq .faq-num {
  flex: 0 0 auto;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
}

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

.page-faq .faq-a {
  max-width: 70ch;
  padding: 0 clamp(0px, 2vw, 24px) 22px clamp(30px, 4vw, 42px);
  font-size: 16px;
  line-height: 1.9;
  color: var(--text-soft);
}

.page-faq .faq-a > p + p {
  margin-top: .85em;
}

.page-faq .faq-inline-link {
  color: var(--blue-link);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 155, 209, .5);
}

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

.page-faq .faq-lead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  margin: clamp(24px, 3.4vw, 34px) 0 0;
  padding: 16px 20px;
  border: 1px solid var(--faq-rule);
  border-left: 3px solid var(--gold);
  background: linear-gradient(90deg, rgba(242, 180, 65, .08), rgba(242, 180, 65, 0) 74%);
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .faq-lead-link {
  margin-left: auto;
  padding-bottom: 1px;
  font-family: var(--font-head);
  font-weight: 800;
  color: var(--gold);
  text-decoration: none;
  border-bottom: 1px solid rgba(242, 180, 65, .45);
  transition: color .2s var(--ease-out), border-color .2s var(--ease-out);
}

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

.page-faq .faq-lead-link::after {
  content: " →";
}

/* ---------- 分步排查 ---------- */
.page-faq .faq-steps-grid {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-faq .faq-step-list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--faq-hair);
  background: var(--faq-hair);
}

.page-faq .faq-step {
  padding: clamp(20px, 2.6vw, 28px);
  background: var(--faq-panel);
}

.page-faq .faq-step-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

.page-faq .faq-step h3 {
  margin: .55em 0 .5em;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 20px);
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--warm-white);
}

.page-faq .faq-step > p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .faq-step .faq-step-check {
  margin-top: 1em;
  padding-top: .9em;
  border-top: 1px dashed var(--faq-hair);
  font-size: 14px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-step-check strong {
  margin-right: 6px;
  font-family: var(--font-head);
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--gold);
}

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

.page-faq .faq-figure .figure-media {
  overflow: hidden;
  border: 1px solid var(--faq-hair);
  background: rgba(10, 22, 38, .6);
}

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

.page-faq .faq-figure .figure-caption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--text-dim);
}

/* ---------- 术语对照 ---------- */
.page-faq .faq-glossary-grid {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(24px, 3.4vw, 36px);
}

.page-faq .faq-table-wrap {
  min-width: 0;
  overflow-x: auto;
  border: 1px solid var(--faq-hair);
  background: rgba(18, 35, 61, .5);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 430px;
  border-collapse: collapse;
  font-size: 15px;
}

.page-faq .faq-table-caption {
  padding: 13px 16px;
  border-bottom: 1px solid var(--rail-line);
  background: rgba(10, 22, 38, .78);
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  text-align: left;
}

.page-faq .faq-table th {
  padding: 12px 16px;
  border-bottom: 1px solid var(--rail-line);
  background: rgba(10, 22, 38, .7);
  color: var(--text-dim);
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 12.5px;
  letter-spacing: .1em;
  text-align: left;
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--faq-hair);
  color: var(--text-soft);
  line-height: 1.8;
  vertical-align: top;
}

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

.page-faq .faq-table td:first-child {
  font-family: var(--font-head);
  font-weight: 800;
  color: var(--warm-white);
  white-space: nowrap;
}

.page-faq .faq-table tbody tr:hover td {
  background: rgba(242, 180, 65, .05);
}

/* ---------- 收束 ---------- */
.page-faq .faq-closing {
  padding-block: clamp(46px, 7vw, 104px) clamp(58px, 8vw, 124px);
  border-top: 1px solid var(--faq-hair);
  background: linear-gradient(180deg, rgba(18, 35, 61, .58), rgba(5, 11, 20, .92));
}

.page-faq .faq-closing-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-closing p {
  max-width: 58ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--text-soft);
}

.page-faq .faq-closing-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 32px);
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-lead-link {
    margin-left: auto;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

  .page-faq .faq-hero-side {
    padding-top: 4px;
    padding-left: clamp(18px, 2.4vw, 28px);
    border-top: 0;
    border-left: 1px solid var(--faq-hair);
  }

  .page-faq .faq-steps-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
  }

  .page-faq .faq-glossary-grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
    align-items: start;
  }

  .page-faq .faq-figure .figure-media {
    position: sticky;
    top: 24px;
  }
}

@media (max-width: 639px) {
  .page-faq .faq-lead-link {
    margin-left: 0;
  }

  .page-faq .faq-table td:first-child {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .001ms !important;
    animation-duration: .001ms !important;
  }
}