.page-faq {
  --faq-card: rgba(11, 7, 24, 0.58);
  --faq-panel: rgba(26, 16, 56, 0.72);
  --faq-cyan-soft: rgba(52, 231, 228, 0.14);
  background:
    radial-gradient(900px 420px at 88% -6%, rgba(52, 231, 228, 0.14), transparent 62%),
    radial-gradient(720px 380px at 4% 32%, rgba(123, 77, 255, 0.12), transparent 66%),
    linear-gradient(180deg, var(--teal) 0%, var(--ink) 34%, var(--ink) 82%, var(--teal) 100%);
  color: var(--text);
  padding-bottom: 24px;
}

.page-faq .faq-shell {
  display: grid;
  grid-template-areas:
    "top"
    "toc"
    "main";
  gap: 20px;
  width: min(100% - (var(--gutter) * 2), var(--wrap));
  margin-inline: auto;
  padding-block: 22px 72px;
}

.page-faq .faq-topbar {
  grid-area: top;
}

.page-faq .faq-crumb {
  font-size: 13px;
  letter-spacing: 0.04em;
}

.page-faq .faq-crumb a {
  color: var(--muted);
  text-decoration: none;
}

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

.page-faq .faq-crumb span[aria-current="page"] {
  color: var(--cyan);
}

/* 锚点目录 */
.page-faq .faq-toc {
  grid-area: toc;
}

.page-faq .faq-toc__title {
  display: none;
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-faq .faq-toc__link {
  flex: 0 0 auto;
  white-space: nowrap;
  padding: 7px 12px;
  border: 1px solid var(--line-muted);
  border-radius: 12px 3px 12px 3px;
  color: var(--muted);
  font-size: 13px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--text);
  border-color: var(--line-cyan);
}

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

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
}

.page-faq .faq-title {
  font-family: var(--font-display);
  font-size: clamp(1.95rem, 6vw, 3.4rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 10px 0 18px;
  text-wrap: balance;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 60ch;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.85;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-hero__panel {
  position: relative;
  padding: 22px;
  background: linear-gradient(155deg, rgba(26, 16, 56, 0.94), rgba(11, 7, 24, 0.88));
  border: 1px solid var(--line-cyan);
  border-radius: var(--cut);
  box-shadow: var(--glow-cyan);
  overflow: hidden;
}

.page-faq .faq-hero__panel::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(180deg, rgba(242, 238, 255, 0.05) 0 1px, transparent 1px 4px);
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-panel__label {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-panel__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  position: relative;
  z-index: 1;
}

.page-faq .faq-panel__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: start;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-muted);
}

.page-faq .faq-panel__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-panel__num {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--orange);
  letter-spacing: 0.04em;
}

.page-faq .faq-panel__text {
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-panel__text strong {
  display: block;
  color: var(--text);
  font-size: 15px;
  margin-bottom: 2px;
}

/* 三步进度条 */
.page-faq .faq-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 30px;
}

.page-faq .faq-rail__node {
  position: relative;
  display: block;
  padding: 12px 10px 20px;
  background: var(--faq-panel);
  border: 1px solid var(--line-muted);
  border-radius: 14px 4px 14px 4px;
  text-decoration: none;
  color: var(--text);
  transition: border-color 0.22s var(--ease), transform 0.22s var(--ease);
}

.page-faq .faq-rail__node::after {
  content: "";
  position: absolute;
  left: 10px;
  right: 10px;
  bottom: 9px;
  height: 3px;
  border-radius: 2px;
  background: rgba(52, 231, 228, 0.26);
}

.page-faq .faq-rail__node:first-child::after {
  background: linear-gradient(90deg, var(--orange), rgba(255, 138, 61, 0.24));
}

.page-faq .faq-rail__node:hover,
.page-faq .faq-rail__node:focus-visible {
  border-color: var(--line-cyan);
  transform: translateY(-2px);
}

.page-faq .faq-rail__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  margin-bottom: 4px;
}

.page-faq .faq-rail__node:first-child .faq-rail__num {
  color: var(--orange);
}

.page-faq .faq-rail__label {
  font-size: 14px;
  font-weight: 600;
}

/* 章节通用 */
.page-faq .faq-section {
  margin-top: 56px;
  padding-top: 26px;
  border-top: 1px solid var(--line-muted);
}

.page-faq .faq-section__head {
  max-width: 64ch;
  margin-bottom: 24px;
}

.page-faq .faq-section__head h2 {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.4vw, 2.05rem);
  line-height: 1.26;
  letter-spacing: -0.01em;
  margin: 8px 0 12px;
}

.page-faq .faq-section__head p {
  margin: 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.85;
}

.page-faq .faq-section__head a,
.page-faq .record-note a,
.page-faq .step-card__hint a,
.page-faq .qa__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(52, 231, 228, 0.34);
}

.page-faq .faq-section__head a:hover,
.page-faq .record-note a:hover,
.page-faq .step-card__hint a:hover,
.page-faq .qa__body a:hover {
  border-bottom-color: var(--cyan);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 0 0 26px;
}

.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: 14px 4px 14px 4px;
}

/* 三步卡 */
.page-faq .step-grid {
  display: grid;
  gap: 14px;
}

.page-faq .step-card {
  background: var(--faq-card);
  border: 1px solid var(--line-violet);
  border-radius: var(--cut);
  padding: 16px 18px;
  transition: border-color 0.24s var(--ease), box-shadow 0.24s var(--ease);
}

.page-faq .step-card:hover {
  border-color: var(--line-cyan);
  box-shadow: var(--glow-cyan);
}

.page-faq .step-card[open] {
  border-color: var(--cyan);
}

.page-faq .step-card__head {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .step-card__num {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  line-height: 1;
  letter-spacing: 0.02em;
  color: var(--cyan);
  opacity: 0.85;
}

.page-faq .step-card--first .step-card__num {
  color: var(--orange);
  opacity: 1;
}

.page-faq .step-card__title {
  margin: 0;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.page-faq .step-card__toggle {
  width: 10px;
  height: 10px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.22s var(--ease);
}

.page-faq .step-card[open] .step-card__toggle {
  transform: rotate(-135deg);
}

.page-faq .step-card__body {
  padding-top: 14px;
}

.page-faq .step-card__hint {
  margin: 0 0 14px;
  color: var(--text);
  font-size: 14.5px;
  line-height: 1.7;
}

.page-faq .step-fact {
  padding: 10px 0;
  border-top: 1px dashed var(--line-muted);
}

.page-faq .step-fact__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  margin-bottom: 5px;
}

.page-faq .step-fact p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.78;
}

/* 现象清单 */
.page-faq .phenom {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-faq .phenom li {
  position: relative;
  padding-left: 20px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .phenom li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(52, 231, 228, 0.55);
}

/* 注册异常 */
.page-faq .issue-list {
  display: grid;
  gap: 12px;
}

.page-faq .issue-row {
  display: grid;
  gap: 8px;
  padding: 16px 18px;
  background: linear-gradient(120deg, rgba(142, 31, 69, 0.24), rgba(11, 7, 24, 0.6));
  border: 1px solid var(--line-muted);
  border-left: 3px solid var(--wine);
  border-radius: 4px 16px 4px 16px;
}

.page-faq .issue-row__name {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.page-faq .issue-row__step {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .issue-row__next {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

/* 牌局记录 */
.page-faq .record-layout {
  display: grid;
  gap: 22px;
}

.page-faq .record-figure {
  margin: 0;
}

.page-faq .record-figure img {
  max-height: 460px;
}

.page-faq .record-note {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.8;
}

/* 问答 */
.page-faq .qa-list {
  border-top: 1px solid var(--line-muted);
}

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

.page-faq .qa__summary {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 14px;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q {
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .qa__mark {
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.22s var(--ease);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(-135deg);
}

.page-faq .qa[open] .qa__q {
  color: var(--cyan);
}

.page-faq .qa__body {
  padding: 0 2px 18px;
}

.page-faq .qa__body p {
  margin: 0;
  max-width: 66ch;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.85;
}

/* 设备 */
.page-faq .device-list {
  border-top: 1px solid var(--line-muted);
}

.page-faq .device-row {
  display: grid;
  gap: 4px;
  padding: 14px 2px;
  border-bottom: 1px solid var(--line-muted);
}

.page-faq .device-row__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

.page-faq .device-row__meta {
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-faq .device-row__status {
  font-size: 13px;
  line-height: 1.6;
}

.page-faq .device-row__status.is-ok {
  color: var(--cyan);
}

.page-faq .device-row__status.is-warn {
  color: var(--gold);
}

/* 人工协助 */
.page-faq .help-panel {
  display: grid;
  gap: 24px;
  padding: 24px;
  background: linear-gradient(150deg, rgba(142, 31, 69, 0.5), rgba(11, 7, 24, 0.92) 62%);
  border: 1px solid rgba(245, 200, 107, 0.24);
  border-radius: var(--cut);
}

.page-faq .help-panel__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--gold);
}

.page-faq .help-panel__col + .help-panel__col {
  padding-top: 22px;
  border-top: 1px dashed rgba(245, 200, 107, 0.24);
}

.page-faq .help-copy {
  justify-self: start;
}

.page-faq .help-note {
  margin: 14px 0 18px;
  color: var(--muted);
  font-size: 13.5px;
  line-height: 1.8;
}

.page-faq .help-cta {
  display: inline-block;
}

/* 中等屏幕 */
@media (min-width: 720px) {
  .page-faq .step-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
  }

  .page-faq .issue-row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.7fr) minmax(0, 1.6fr);
    gap: 18px;
    align-items: start;
  }

  .page-faq .device-row {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 0.9fr);
    gap: 16px;
    align-items: center;
  }

  .page-faq .help-panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 32px;
    padding: 30px;
  }

  .page-faq .help-panel__col + .help-panel__col {
    padding-top: 0;
    padding-left: 32px;
    border-top: 0;
    border-left: 1px dashed rgba(245, 200, 107, 0.24);
  }
}

/* 桌面：左右分栏 + 常驻目录 */
@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: minmax(0, 1fr) 224px;
    grid-template-areas:
      "top top"
      "main toc";
    column-gap: 52px;
    row-gap: 26px;
    padding-block: 40px 110px;
  }

  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-toc__title {
    display: block;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    overflow: visible;
    gap: 2px;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__link {
    white-space: normal;
    padding: 9px 12px;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    font-size: 13px;
    transition: color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
  }

  .page-faq .faq-toc__link:hover,
  .page-faq .faq-toc__link:focus-visible {
    border-left-color: var(--cyan);
    color: var(--text);
    transform: translateX(4px);
  }

  .page-faq .faq-section {
    margin-top: 76px;
    padding-top: 34px;
  }

  .page-faq .record-layout {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    gap: 34px;
    align-items: start;
  }

  .page-faq .record-figure img {
    max-height: 520px;
  }

  .page-faq .faq-rail {
    gap: 14px;
    margin-top: 40px;
  }

  .page-faq .faq-rail__node {
    padding: 16px 16px 24px;
  }
}