.page-faq {
  --faq-gold-line: rgba(217, 169, 59, .38);
  --faq-soft-line: rgba(42, 53, 87, .9);
  --faq-panel: rgba(19, 27, 54, .72);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .doc-container {
  width: 100%;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(28px, 5vw, 56px) 0 clamp(36px, 6vw, 72px);
  background:
    radial-gradient(120% 90% at 88% 0%, rgba(200, 64, 47, .16) 0%, transparent 58%),
    radial-gradient(90% 80% at 4% 12%, rgba(47, 158, 143, .14) 0%, transparent 60%),
    var(--ink);
  border-bottom: 2px solid var(--faq-gold-line);
}

.page-faq .faq-hero .kicker {
  margin-bottom: 14px;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.2;
  letter-spacing: .035em;
  color: var(--white);
  margin: 0 0 20px;
  max-width: 20ch;
}

.page-faq .faq-hero .lead {
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.9;
  color: var(--muted);
  max-width: 68ch;
  margin: 0 0 clamp(26px, 4vw, 40px);
}

.page-faq .faq-hero-figure {
  margin: 0 0 clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero-figure .media-caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
  letter-spacing: .02em;
}

/* ---------- 三步动线 ---------- */
.page-faq .flow-strip {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0;
  border-top: 1px solid var(--faq-gold-line);
}

.page-faq .flow-node {
  position: relative;
  border-bottom: 1px solid var(--faq-soft-line);
}

.page-faq .flow-node::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), var(--cinnabar));
  transition: width var(--dur) var(--ease);
}

.page-faq .flow-link {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px 4px 20px 0;
  text-decoration: none;
  color: inherit;
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .flow-link:hover,
.page-faq .flow-link:focus-visible {
  transform: translateX(8px);
  background: rgba(217, 169, 59, .05);
}

.page-faq .flow-link:hover .flow-num,
.page-faq .flow-link:focus-visible .flow-num {
  color: var(--gold-soft);
  border-color: var(--gold);
}

.page-faq .flow-node:focus-within::after {
  width: 100%;
}

.page-faq .flow-num {
  font-family: var(--font-mono);
  font-size: 24px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  border: 2px solid var(--gold-line, rgba(217, 169, 59, .55));
  padding: 8px 10px;
  flex: none;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .flow-body {
  display: block;
  padding-top: 2px;
}

.page-faq .flow-title {
  display: block;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--white);
  margin-bottom: 6px;
}

.page-faq .flow-desc {
  display: block;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 步骤详解 ---------- */
.page-faq .faq-steps {
  padding: clamp(38px, 6vw, 68px) 0;
}

.page-faq .faq-steps + .faq-steps {
  border-top: 1px solid var(--faq-soft-line);
}

.page-faq .section-heading h2 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.2vw, 32px);
  letter-spacing: .04em;
  line-height: 1.35;
  color: var(--white);
  margin: 0;
}

.page-faq .step-layout {
  display: grid;
  gap: clamp(20px, 3.4vw, 34px);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .step-copy p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--paper);
  margin: 0 0 16px;
}

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

.page-faq .step-copy strong {
  color: var(--gold-soft);
  font-weight: 700;
}

.page-faq .step-copy a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 158, 143, .45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .step-copy a:hover,
.page-faq .step-copy a:focus-visible {
  color: var(--gold-soft);
  border-color: var(--gold-soft);
}

.page-faq .step-aside {
  background: var(--ink-2);
  border: 2px solid var(--faq-soft-line);
  border-left: 4px solid var(--gold);
  box-shadow: var(--shadow-hard);
  padding: 20px 18px;
}

.page-faq .step-aside-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
  margin: 0 0 12px;
}

.page-faq .step-check {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
}

.page-faq .step-check li {
  position: relative;
  padding-left: 20px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--paper);
  margin-bottom: 8px;
}

.page-faq .step-check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 9px;
  height: 9px;
  background: var(--jade);
  transform: rotate(45deg);
}

.page-faq .step-pitfall {
  margin: 0;
  padding-top: 12px;
  border-top: 1px dashed var(--faq-soft-line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 栏目规则 ---------- */
.page-faq .faq-rules {
  padding: clamp(38px, 6vw, 72px) 0;
  background:
    linear-gradient(180deg, rgba(19, 27, 54, .92) 0%, rgba(10, 16, 36, 1) 100%);
  border-top: 2px solid var(--faq-gold-line);
  border-bottom: 2px solid var(--faq-gold-line);
}

.page-faq .section-intro {
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
  max-width: 70ch;
  margin: 16px 0 clamp(22px, 3vw, 32px);
}

.page-faq .faq-rules-figure {
  margin: 0 0 clamp(26px, 4vw, 40px);
}

.page-faq .faq-rules-figure .media-caption {
  margin-top: 12px;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .rule-list {
  display: grid;
  gap: clamp(16px, 2.4vw, 24px);
}

.page-faq .rule-block {
  display: grid;
  gap: 16px;
  padding: clamp(18px, 3vw, 26px) 0;
  border-top: 1px solid var(--faq-gold-line);
  transition: background-color var(--dur) var(--ease);
}

.page-faq .rule-block:last-child {
  border-bottom: 1px solid var(--faq-gold-line);
}

.page-faq .rule-side {
  display: flex;
  align-items: baseline;
  gap: 12px;
  flex-wrap: wrap;
}

.page-faq .rule-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  line-height: 1;
  color: var(--gold);
  letter-spacing: .02em;
}

.page-faq .rule-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--white);
  margin: 0;
}

.page-faq .rule-side .tag {
  font-size: 11px;
  letter-spacing: .12em;
}

.page-faq .rule-items {
  margin: 0;
  display: grid;
  gap: 2px;
}

.page-faq .rule-items dt {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--jade);
  padding: 8px 0 4px;
  border-top: 1px dashed var(--faq-soft-line);
}

.page-faq .rule-items dt:first-of-type {
  border-top: 0;
  padding-top: 0;
}

.page-faq .rule-items dd {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--paper);
}

.page-faq .rule-items dd:last-child {
  margin-bottom: 0;
}

.page-faq .rule-items a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 212, 138, .4);
}

.page-faq .rule-items a:hover,
.page-faq .rule-items a:focus-visible {
  color: var(--white);
  border-color: var(--white);
}

/* ---------- 测试版 ---------- */
.page-faq .faq-beta {
  padding: clamp(38px, 6vw, 72px) 0;
}

.page-faq .beta-grid {
  display: grid;
  gap: clamp(20px, 3.2vw, 34px);
  margin-top: clamp(18px, 3vw, 28px);
}

.page-faq .beta-main p {
  font-size: 16px;
  line-height: 1.9;
  color: var(--paper);
  margin: 0 0 16px;
}

.page-faq .beta-main a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 158, 143, .45);
}

.page-faq .beta-main a:hover,
.page-faq .beta-main a:focus-visible {
  color: var(--gold-soft);
  border-color: var(--gold-soft);
}

.page-faq .beta-cards {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.page-faq .beta-card {
  background: var(--ink-3);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-hard);
  padding: 16px 14px;
}

.page-faq .beta-card--jade {
  border-color: var(--jade);
}

.page-faq .beta-card-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--gold-soft);
  letter-spacing: .02em;
}

.page-faq .beta-card--jade .beta-card-num {
  color: #7FD6C9;
}

.page-faq .beta-card-label {
  margin: 8px 0 0;
  font-size: 12px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--muted);
}

.page-faq .beta-feedback {
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  padding: 18px 20px;
  background: rgba(47, 158, 143, .1);
  border-left: 4px solid var(--jade);
  font-size: 14px;
  line-height: 1.9;
  color: var(--paper);
}

.page-faq .beta-feedback a {
  color: var(--gold-soft);
  text-decoration: none;
  border-bottom: 1px solid rgba(240, 212, 138, .4);
}

/* ---------- 问答折叠组 ---------- */
.page-faq .faq-qna {
  padding: clamp(38px, 6vw, 72px) 0;
  background: var(--ink-2);
  border-top: 1px solid var(--faq-gold-line);
}

.page-faq .qna-groups {
  display: grid;
  gap: clamp(22px, 3.2vw, 34px);
}

.page-faq .qna-group-title {
  margin: 0 0 14px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
}

.page-faq .qna-group-title .tag {
  font-size: 11px;
  letter-spacing: .14em;
}

.page-faq .disclosure {
  border: 1px solid var(--faq-gold-line);
  background: rgba(10, 16, 36, .7);
  margin-bottom: 10px;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

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

.page-faq .disclosure:hover {
  border-color: var(--gold);
}

.page-faq .disclosure-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 15px 16px;
  background: transparent;
  border: 0;
  color: var(--white);
  font-family: inherit;
  font-size: 15px;
  line-height: 1.6;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .disclosure-trigger:hover,
.page-faq .disclosure-trigger:focus-visible {
  color: var(--gold-soft);
  background: rgba(217, 169, 59, .07);
}

.page-faq .disclosure-mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
}

.page-faq .disclosure-mark::before,
.page-faq .disclosure-mark::after {
  content: "";
  position: absolute;
  background: var(--gold);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .disclosure-mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .disclosure-mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

.page-faq .disclosure-trigger[aria-expanded="true"] .disclosure-mark::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .disclosure-trigger[aria-expanded="true"] {
  color: var(--gold-soft);
}

.page-faq .disclosure-panel {
  padding: 0 16px 16px;
  border-top: 1px dashed var(--faq-soft-line);
}

.page-faq .disclosure-panel p {
  margin: 14px 0 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--paper);
}

/* ---------- 出错自查 ---------- */
.page-faq .faq-trouble {
  padding: clamp(38px, 6vw, 72px) 0 clamp(10px, 2vw, 20px);
}

.page-faq .trouble-list {
  list-style: none;
  margin: clamp(18px, 3vw, 28px) 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .trouble-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  border: 2px solid var(--cinnabar);
  border-left-width: 6px;
  background: rgba(200, 64, 47, .08);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .trouble-item:hover {
  transform: translateX(6px);
  background: rgba(200, 64, 47, .14);
}

.page-faq .trouble-code {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  color: #F09A8C;
  flex: none;
  padding-top: 3px;
}

.page-faq .trouble-body h3 {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--white);
}

.page-faq .trouble-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .trouble-footer {
  margin: clamp(22px, 3.4vw, 32px) 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--faq-gold-line);
  font-size: 14px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .trouble-footer a {
  color: var(--jade);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 158, 143, .45);
}

.page-faq .trouble-footer a:hover,
.page-faq .trouble-footer a:focus-visible {
  color: var(--gold-soft);
  border-color: var(--gold-soft);
}

/* ---------- 图片通用 ---------- */
.page-faq .image-frame img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .flow-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 2px solid var(--faq-gold-line);
  }

  .page-faq .flow-node {
    border-bottom: 0;
    border-right: 1px solid var(--faq-soft-line);
  }

  .page-faq .flow-node:last-child {
    border-right: 0;
  }

  .page-faq .flow-node::after {
    left: 0;
    right: auto;
    bottom: 0;
    height: 0;
  }

  .page-faq .flow-node:focus-within::after {
    height: 3px;
    width: 100%;
  }

  .page-faq .flow-link {
    flex-direction: column;
    gap: 14px;
    padding: 24px 18px 24px 0;
    height: 100%;
  }

  .page-faq .flow-link:hover,
  .page-faq .flow-link:focus-visible {
    transform: translateY(-6px);
  }

  .page-faq .beta-cards {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .step-layout {
    grid-template-columns: minmax(0, 1.55fr) minmax(280px, .85fr);
    align-items: start;
  }

  .page-faq .step-layout--flip {
    grid-template-columns: minmax(280px, .85fr) minmax(0, 1.55fr);
  }

  .page-faq .step-layout--flip .step-copy {
    order: 2;
  }

  .page-faq .step-layout--flip .step-aside {
    order: 1;
  }

  .page-faq .beta-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .rule-block {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 32px;
    padding: 26px 0 26px 4px;
  }

  .page-faq .rule-side {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }

  .page-faq .rule-num {
    font-size: 40px;
  }

  .page-faq .rule-items {
    gap: 0;
  }

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

@media (min-width: 1280px) {
  .page-faq .rule-block {
    grid-template-columns: 280px minmax(0, 1fr);
  }
}

.page-faq {
  --gold-line: currentColor;
}