.page-faq {
  --faq-panel: rgba(20, 24, 31, 0.86);
  --faq-rail-line: rgba(200, 162, 74, 0.32);
}

.page-faq .faq-hero {
  padding-top: clamp(20px, 3vw, 34px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 28px;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-title);
  font-size: clamp(30px, 5.6vw, 60px);
  line-height: 1.14;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-faq .faq-hero h1::after {
  content: "";
  display: block;
  width: 68px;
  height: 3px;
  margin-top: 22px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--gold), rgba(200, 162, 74, 0));
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 48ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-hero__art {
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

.page-faq .faq-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 7;
  object-fit: cover;
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: end;
    gap: 52px;
  }
}

/* 步骤导轨 */
.page-faq .faq-rail {
  list-style: none;
  margin: 40px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-rail a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--faq-panel);
  color: var(--paper);
  text-decoration: none;
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease), background 0.35s var(--ease);
}

.page-faq .faq-rail a:hover,
.page-faq .faq-rail a:focus-visible {
  transform: translateY(-3px);
  border-color: rgba(239, 217, 163, 0.6);
  background: rgba(30, 36, 44, 0.95);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-rail__name {
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--paper);
}

@media (min-width: 760px) {
  .page-faq .faq-rail {
    position: relative;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .faq-rail::before {
    content: "";
    position: absolute;
    left: 4%;
    right: 4%;
    top: 50%;
    height: 1px;
    transform: translateY(-50%);
    background: linear-gradient(90deg, rgba(200, 162, 74, 0), var(--faq-rail-line) 14%, var(--faq-rail-line) 86%, rgba(200, 162, 74, 0));
  }

  .page-faq .faq-rail li {
    position: relative;
    z-index: 1;
  }

  .page-faq .faq-rail a {
    justify-content: center;
    background: var(--ink-2);
  }
}

/* 四步卡片 */
.page-faq .faq-steps {
  margin-top: 34px;
  display: grid;
  gap: 18px;
}

@media (min-width: 760px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.page-faq .faq-step {
  padding: 26px 22px 24px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(30, 36, 44, 0.9), rgba(11, 13, 16, 0.94));
  transition: transform 0.4s var(--ease), border-color 0.4s var(--ease);
}

.page-faq .faq-step:hover,
.page-faq .faq-step:focus-within {
  transform: translateY(-4px);
  border-color: rgba(239, 217, 163, 0.55);
}

.page-faq .faq-step__num {
  display: block;
  font-family: var(--font-mono);
  font-size: 26px;
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--gold);
}

.page-faq .faq-step__title {
  margin: 16px 0 10px;
  font-family: var(--font-title);
  font-size: 21px;
  line-height: 1.4;
  color: var(--paper);
}

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

.page-faq .faq-step__hint {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--jade);
  font-size: 13px;
  line-height: 1.72;
  color: rgba(63, 167, 156, 0.96);
}

/* 手风琴问答 */
.page-faq .faq-acc {
  margin-top: 32px;
  max-width: 880px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
  transition: background 0.35s var(--ease);
}

.page-faq .faq-item[open] {
  background: linear-gradient(180deg, rgba(30, 36, 44, 0.72), rgba(11, 13, 16, 0));
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 20px 4px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-title);
  font-size: 17px;
  line-height: 1.5;
  color: var(--paper);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--gold-light);
  outline-offset: 3px;
}

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

.page-faq .faq-item__mark {
  flex: 0 0 auto;
  position: relative;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--line);
  transition: transform 0.35s var(--ease), border-color 0.35s var(--ease);
}

.page-faq .faq-item__mark::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 8px;
  width: 7px;
  height: 7px;
  border-right: 1.6px solid var(--gold);
  border-bottom: 1.6px solid var(--gold);
  transform: rotate(45deg);
}

.page-faq .faq-item[open] .faq-item__mark {
  transform: rotate(180deg);
  border-color: rgba(239, 217, 163, 0.6);
}

.page-faq .faq-item__body {
  padding: 0 4px 22px;
}

.page-faq .faq-item__body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.82;
  color: var(--silver);
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faqFade 0.4s var(--ease) both;
}

@keyframes faqFade {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 排查顺序 */
.page-faq .faq-check__grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-check__list {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
}

.page-faq .faq-check__list li {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr);
  gap: 14px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-check__list li:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-check__idx {
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--cinnabar);
}

.page-faq .faq-check__list h3 {
  margin: 0 0 8px;
  font-family: var(--font-title);
  font-size: 18px;
  line-height: 1.45;
  color: var(--paper);
}

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

.page-faq .faq-check__art {
  margin: 0;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--ink-2);
  overflow: hidden;
}

.page-faq .faq-check__art img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 10 / 7;
  object-fit: cover;
}

.page-faq .faq-check__art .media__caption {
  padding: 14px 18px 16px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--silver);
}

@media (min-width: 960px) {
  .page-faq .faq-check__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    gap: 56px;
    align-items: start;
  }
}

/* 文档阅读要点 */
.page-faq .faq-narrow {
  max-width: 720px;
}

.page-faq .faq-narrow .prose h3 {
  margin: 30px 0 10px;
  font-family: var(--font-title);
  font-size: 19px;
  line-height: 1.5;
  color: var(--paper);
}

.page-faq .faq-narrow .prose ol {
  margin: 12px 0 22px;
  padding-left: 20px;
}

.page-faq .faq-narrow .prose li {
  margin-bottom: 10px;
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-reading__more {
  margin: 30px 0 0;
}

/* 联络面板 */
.page-faq .faq-help__panel {
  padding: clamp(26px, 4vw, 48px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(200, 162, 74, 0.15), rgba(11, 13, 16, 0) 58%),
    linear-gradient(150deg, rgba(30, 36, 44, 0.92), rgba(11, 13, 16, 0.96));
  display: grid;
  gap: 28px;
}

.page-faq .faq-help__intro p {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--silver);
}

.page-faq .faq-help__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .faq-help__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 18px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line-soft);
  background: rgba(242, 237, 228, 0.04);
}

.page-faq .faq-help__key {
  font-size: 13px;
  letter-spacing: 0.05em;
  color: var(--silver);
}

.page-faq .faq-help__val {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.6;
  color: var(--gold-light);
  word-break: break-all;
}

.page-faq .faq-help__links {
  margin: 26px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

@media (min-width: 900px) {
  .page-faq .faq-help__panel {
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.92fr);
    gap: 48px;
    align-items: center;
  }
}

@media (max-width: 479px) {
  .page-faq .faq-rail a {
    padding: 12px 14px;
  }

  .page-faq .faq-check__list li {
    grid-template-columns: 34px minmax(0, 1fr);
    gap: 10px;
  }

  .page-faq .faq-help__list li {
    flex-direction: column;
    gap: 6px;
  }
}