.page-faq {
  display: block;
  padding-bottom: 80px;
}

.page-faq .rail {
  position: relative;
  z-index: 6;
  background: rgba(11, 43, 38, 0.94);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

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

.page-faq .rail__list {
  display: flex;
  align-items: center;
  gap: 6px;
  margin: 0;
  padding: 9px 14px;
  list-style: none;
  white-space: nowrap;
}

.page-faq .rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid transparent;
  border-radius: 2px;
  color: var(--sage);
  text-decoration: none;
  font-size: 13px;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .rail__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
}

.page-faq .rail__label {
  font-family: var(--font-body);
}

.page-faq .rail__link:hover,
.page-faq .rail__link:focus-visible {
  color: var(--mist);
  border-color: var(--line);
}

.page-faq .rail__link.is-active {
  color: var(--ember);
  border-color: rgba(255, 90, 43, 0.42);
}

.page-faq .content {
  padding: 0 18px;
  max-width: 1180px;
  margin: 0 auto;
}

/* ---------- 首屏 ---------- */

.page-faq .guide-hero {
  position: relative;
  margin: 18px 0 56px;
  padding: 38px 22px 52px;
  background: linear-gradient(128deg, var(--indigo) 0%, #121e50 44%, var(--deep-green) 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 34px), 0 100%);
  overflow: hidden;
}

.page-faq .guide-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(47, 227, 208, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47, 227, 208, 0.07) 1px, transparent 1px);
  background-size: 96px 96px;
  pointer-events: none;
}

.page-faq .guide-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .guide-hero__index {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .guide-hero__title {
  margin: 0;
  max-width: 20ch;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .guide-hero__lead {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: rgba(232, 241, 238, 0.82);
}

.page-faq .jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.page-faq .jump-nav a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(11, 43, 38, 0.55);
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .jump-nav a:hover,
.page-faq .jump-nav a:focus-visible {
  border-color: var(--ember);
  color: var(--ember);
}

.page-faq .jump-nav__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

/* ---------- 章节骨架 ---------- */

.page-faq .guide-section {
  margin: 0 0 68px;
  scroll-margin-top: 72px;
}

.page-faq .guide-section .section-title {
  margin: 0;
  color: var(--mist);
}

.page-faq .guide-section .section-note {
  margin: 10px 0 26px;
  max-width: 60ch;
  color: var(--sage);
  font-size: 15px;
  line-height: 1.75;
}

.page-faq .guide-section--indigo {
  padding: 30px 20px 34px;
  border: 1px solid rgba(47, 227, 208, 0.14);
  border-radius: 3px;
  background: linear-gradient(158deg, rgba(27, 42, 107, 0.9) 0%, rgba(16, 20, 24, 0.88) 100%);
}

/* ---------- 三条动线 ---------- */

.page-faq .flow-map {
  display: grid;
  gap: 14px;
}

.page-faq .flow-node {
  position: relative;
  padding: 22px 20px 24px;
  border: 1px solid var(--line);
  background: var(--glass-green);
  backdrop-filter: blur(6px);
}

.page-faq .flow-node::after {
  content: "";
  position: absolute;
  left: 20px;
  bottom: 0;
  width: 34px;
  height: 3px;
  background: linear-gradient(90deg, var(--ember), var(--ember-deep));
}

.page-faq .flow-node__num {
  display: block;
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  color: rgba(47, 227, 208, 0.42);
  letter-spacing: -0.02em;
}

.page-faq .flow-node__title {
  margin: 12px 0 8px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .flow-node__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 241, 238, 0.78);
}

.page-faq .flow-node__link {
  display: inline-block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 208, 0.36);
  padding-bottom: 2px;
}

.page-faq .flow-node__link:hover,
.page-faq .flow-node__link:focus-visible {
  color: var(--ember);
  border-bottom-color: var(--ember);
}

/* ---------- 步骤列表 ---------- */

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

.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: step;
}

.page-faq .step {
  position: relative;
  padding: 0 0 26px 56px;
}

.page-faq .step::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: -4px;
  font-family: var(--font-display);
  font-size: 34px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-faq .step::after {
  content: "";
  position: absolute;
  left: 14px;
  top: 38px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(47, 227, 208, 0));
}

.page-faq .step:last-child {
  padding-bottom: 0;
}

.page-faq .step:last-child::after {
  display: none;
}

.page-faq .step__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .step__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 241, 238, 0.78);
}

/* ---------- 配图 ---------- */

.page-faq .guide-figure {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--charcoal);
  overflow: hidden;
}

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

.page-faq .guide-figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 提示块 ---------- */

.page-faq .callout {
  margin-top: 30px;
  padding: 22px 20px 24px;
  border: 1px solid rgba(242, 179, 61, 0.34);
  border-left: 3px solid var(--amber);
  background: rgba(18, 59, 51, 0.55);
}

.page-faq .callout--bone {
  border-color: rgba(122, 153, 146, 0.3);
  border-left-color: var(--amber);
  background: var(--bone);
}

.page-faq .callout__tag {
  margin: 0 0 14px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--amber);
}

.page-faq .callout__tag--amber {
  color: #8a5a05;
}

.page-faq .check-list {
  margin: 0;
  padding-left: 20px;
  display: grid;
  gap: 10px;
}

.page-faq .check-list li {
  font-size: 15px;
  line-height: 1.78;
  color: rgba(232, 241, 238, 0.82);
}

.page-faq .callout--bone .check-list li {
  color: #23302c;
}

.page-faq .callout__foot {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.78;
  color: #3c4a45;
}

.page-faq .callout__foot a {
  color: #0c5350;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 收藏三卡 ---------- */

.page-faq .fav-grid {
  display: grid;
  gap: 14px;
}

.page-faq .fav-card {
  padding: 22px 20px 24px;
  border: 1px solid var(--hair);
  border-top: 2px solid var(--amber);
  background: rgba(16, 20, 24, 0.6);
}

.page-faq .fav-card__mark {
  display: block;
  font-size: 20px;
  line-height: 1;
  color: var(--amber);
}

.page-faq .fav-card__title {
  margin: 12px 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .fav-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 241, 238, 0.76);
}

/* ---------- 回看查找 ---------- */

.page-faq .lookup-grid {
  display: grid;
  gap: 14px;
}

.page-faq .lookup-card {
  padding: 22px 20px 24px;
  border: 1px solid rgba(47, 227, 208, 0.2);
  background: rgba(11, 43, 38, 0.72);
}

.page-faq .lookup-card__tag {
  display: inline-block;
  margin-bottom: 12px;
}

.page-faq .lookup-card__title {
  margin: 0 0 8px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .lookup-card__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 241, 238, 0.78);
}

/* ---------- 更新统计 ---------- */

.page-faq .update-row {
  display: grid;
  gap: 14px;
  margin-bottom: 30px;
}

.page-faq .update-row .stat {
  padding: 18px 18px 20px;
  border: 1px solid var(--hair);
  background: rgba(16, 20, 24, 0.55);
}

.page-faq .update-row .stat__num {
  display: block;
  font-family: var(--font-display);
  font-size: 46px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--mist);
}

.page-faq .update-row .stat--ember .stat__num {
  background: linear-gradient(92deg, var(--ember), var(--ember-deep));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-faq .update-row .stat__label {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--sage);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  border-top: 1px solid var(--hair);
}

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

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

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

.page-faq .faq-item summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 1.5px solid var(--cyan);
  border-bottom: 1.5px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.28s var(--ease);
}

.page-faq .faq-item[open] summary::after {
  transform: rotate(-135deg);
}

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

.page-faq .faq-item p {
  margin: 0;
  padding: 0 2px 20px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.82;
  color: rgba(232, 241, 238, 0.76);
}

/* ---------- 安全提示 ---------- */

.page-faq .tip-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .tip {
  padding-left: 18px;
  border-left: 2px solid rgba(47, 227, 208, 0.34);
}

.page-faq .tip__title {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .tip__text {
  margin: 0;
  font-size: 15px;
  line-height: 1.8;
  color: rgba(232, 241, 238, 0.76);
}

.page-faq .tip-note {
  margin: 26px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--sage);
}

.page-faq .tip-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 帮助 ---------- */

.page-faq .guide-section--help {
  padding: 30px 20px 34px;
  border: 1px solid rgba(255, 90, 43, 0.24);
  border-radius: 3px;
  background: linear-gradient(150deg, rgba(122, 31, 61, 0.5) 0%, rgba(11, 43, 38, 0.86) 100%);
}

.page-faq .help-grid {
  display: grid;
  gap: 14px;
}

.page-faq .help-card {
  padding: 22px 20px 24px;
  border: 1px solid rgba(47, 227, 208, 0.2);
  background: rgba(11, 43, 38, 0.68);
}

.page-faq .help-card__key {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
}

.page-faq .help-card__val {
  margin: 0 0 10px;
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--mist);
  word-break: break-all;
}

.page-faq .help-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: rgba(232, 241, 238, 0.74);
}

/* ---------- 结论块 ---------- */

.page-faq .conclusion {
  margin-top: 24px;
}

.page-faq .conclusion p {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.82;
  color: #2a3632;
}

.page-faq .conclusion__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 600px) {
  .page-faq .content {
    padding: 0 26px;
  }

  .page-faq .flow-map,
  .page-faq .fav-grid,
  .page-faq .lookup-grid,
  .page-faq .help-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .guide-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    gap: 30px;
  }

  .page-faq .guide-split--reverse .guide-figure {
    order: -1;
  }
}

@media (min-width: 900px) {
  .page-faq .flow-map,
  .page-faq .fav-grid,
  .page-faq .lookup-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .guide-hero {
    padding: 52px 44px 62px;
  }

  .page-faq .guide-section--indigo,
  .page-faq .guide-section--help {
    padding: 38px 34px 42px;
  }

  .page-faq .callout {
    padding: 26px 26px 28px;
  }
}

@media (min-width: 1100px) {
  .page-faq {
    display: grid;
    grid-template-columns: var(--rail-w) minmax(0, 1fr);
    max-width: var(--shell-max);
    margin: 0 auto;
    align-items: start;
  }

  .page-faq .rail {
    position: sticky;
    top: calc(var(--header-h) + 18px);
    display: block;
    max-height: calc(100vh - var(--header-h) - 40px);
    overflow: visible auto;
    padding: 34px 0 20px 14px;
    background: none;
    border-bottom: 0;
    border-right: 1px solid var(--hair);
  }

  .page-faq .rail__list {
    display: block;
    padding: 0;
    white-space: normal;
  }

  .page-faq .rail__item {
    margin-bottom: 16px;
  }

  .page-faq .rail__link {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 4px 6px;
    border-left: 2px solid transparent;
    border-radius: 0;
    transition: color 0.25s var(--ease), border-color 0.25s var(--ease), transform 0.25s var(--ease);
  }

  .page-faq .rail__link.is-active {
    border-left-color: var(--ember);
    transform: translateX(2px);
  }

  .page-faq .content {
    padding: 0 46px 0 34px;
    max-width: 1120px;
    margin: 0;
  }

  .page-faq .guide-hero {
    margin-top: 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.001ms !important;
    animation-duration: 0.001ms !important;
  }
}
</main>