.page-faq {
  --faq-rail: 268px;
}

/* ---------- Hero ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 28px 0 46px;
  border-bottom: 1px solid var(--c-line);
  background:
    radial-gradient(120% 90% at 8% 0%, rgba(0, 229, 255, .10), transparent 58%),
    radial-gradient(90% 80% at 100% 10%, rgba(124, 77, 255, .10), transparent 60%),
    var(--c-space);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 54, 84, .55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 54, 84, .55) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(ellipse 80% 70% at 25% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(ellipse 80% 70% at 25% 0%, #000 0%, transparent 72%);
}

.page-faq .faq-hero .container {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb {
  margin-bottom: 26px;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero-copy h1 {
  margin: 12px 0 16px;
  max-width: 18ch;
  font-family: var(--f-head);
  font-size: clamp(28px, 7vw, 50px);
  line-height: 1.16;
  letter-spacing: .01em;
  color: var(--c-white);
}

.page-faq .faq-hero-copy .lead {
  max-width: 56ch;
  margin-bottom: 22px;
}

.page-faq .faq-hero-actions {
  gap: 12px;
  flex-wrap: wrap;
}

.page-faq .faq-hero-meta {
  margin-top: 20px;
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--c-slate);
}

/* 四个入口 —— hero 侧栏 */
.page-faq .faq-hero-side {
  align-self: start;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(17, 27, 51, .92), rgba(7, 13, 31, .92));
  box-shadow: var(--shadow-panel);
}

.page-faq .side-label {
  display: block;
  padding: 13px 18px;
  border-bottom: 1px solid var(--c-line);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-slate);
}

.page-faq .entry-map {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .entry-map-item {
  display: grid;
  grid-template-columns: 44px 1fr;
  align-items: baseline;
  gap: 4px 12px;
  padding: 15px 18px;
  border-bottom: 1px solid rgba(42, 54, 84, .7);
  transition: background .25s var(--ease), box-shadow .25s var(--ease);
}

.page-faq .entry-map-item:last-child {
  border-bottom: 0;
}

.page-faq .entry-map-item:hover {
  background: rgba(0, 229, 255, .06);
  box-shadow: inset 3px 0 0 var(--c-cyan);
}

.page-faq .entry-map-num {
  grid-row: span 2;
  font-size: 15px;
  color: var(--c-cyan);
  letter-spacing: .06em;
}

.page-faq .entry-map-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--c-white);
}

.page-faq .entry-map-note {
  grid-column: 2;
  font-size: 12.5px;
  color: var(--c-slate);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding-top: 40px;
}

.page-faq .tutorial-layout {
  display: grid;
  gap: 34px;
}

.page-faq .tutorial-rail {
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  background: var(--c-panel);
  padding: 18px 16px;
}

.page-faq .rail-heading {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-slate);
}

.page-faq .rail-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .rail-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--c-body);
  text-decoration: none;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .rail-link:hover,
.page-faq .rail-link:focus-visible {
  color: var(--c-white);
  border-left-color: var(--c-cyan);
  background: rgba(0, 229, 255, .06);
  outline: none;
}

.page-faq .rail-num {
  flex: none;
  font-size: 12px;
  color: var(--c-violet);
}

.page-faq .rail-foot {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--c-line);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-slate);
}

/* ---------- 步骤块 ---------- */
.page-faq .tutorial-main {
  display: grid;
  gap: 46px;
  min-width: 0;
}

.page-faq .step-block {
  min-width: 0;
  scroll-margin-top: 90px;
}

.page-faq .step-block + .step-block {
  padding-top: 42px;
  border-top: 1px solid var(--c-line);
}

.page-faq .step-block-head {
  margin-bottom: 24px;
}

.page-faq .step-num {
  display: inline-block;
  margin-bottom: 10px;
  padding: 3px 9px;
  border: 1px solid var(--c-line);
  border-radius: var(--radius);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--c-cyan);
  background: rgba(0, 229, 255, .05);
}

.page-faq .step-block-head h2 {
  margin: 0 0 12px;
  font-family: var(--f-head);
  font-size: clamp(21px, 4.6vw, 30px);
  line-height: 1.25;
  color: var(--c-white);
}

.page-faq .step-intro {
  max-width: 62ch;
  margin: 0;
  color: var(--c-body);
}

/* ---------- 图 ---------- */
.page-faq .figure {
  margin: 0 0 30px;
}

.page-faq .figure-frame img {
  width: 100%;
  height: auto;
}

.page-faq .figure-caption {
  display: block;
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--c-violet);
  font-size: 12.5px;
  color: var(--c-slate);
}

/* ---------- 步骤列表 ---------- */
.page-faq .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--c-line);
}

.page-faq .step-item {
  display: grid;
  grid-template-columns: 46px 1fr;
  gap: 14px;
  padding: 20px 0;
  border-bottom: 1px solid rgba(42, 54, 84, .7);
  transition: background .25s var(--ease);
}

.page-faq .step-item:hover {
  background: rgba(0, 229, 255, .035);
}

.page-faq .step-index {
  font-size: 20px;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--c-cyan);
  padding-top: 3px;
}

.page-faq .step-item:nth-child(2) .step-index { color: var(--c-violet); }
.page-faq .step-item:nth-child(3) .step-index { color: var(--c-orange); }
.page-faq .step-item:nth-child(4) .step-index { color: var(--c-green); }

.page-faq .step-copy h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  color: var(--c-white);
}

.page-faq .step-copy p {
  margin: 0 0 8px;
  color: var(--c-body);
  font-size: 15px;
}

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

.page-faq .step-result {
  font-size: 13.5px;
  padding-left: 12px;
  border-left: 2px solid rgba(0, 229, 255, .45);
}

/* ---------- 排查清单 ---------- */
.page-faq .check-list {
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .check-item {
  --accent: var(--c-cyan);
  position: relative;
  display: grid;
  grid-template-columns: 14px 1fr;
  gap: 16px;
  padding: 20px 18px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(17, 27, 51, .95), rgba(7, 13, 31, .88));
  box-shadow: var(--shadow-panel);
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .check-item:hover {
  transform: translateX(3px);
  border-color: var(--accent);
}

.page-faq .check-cyan { --accent: var(--c-cyan); }
.page-faq .check-violet { --accent: var(--c-violet); }
.page-faq .check-warn { --accent: var(--c-warn); }
.page-faq .check-orange { --accent: var(--c-orange); }

.page-faq .check-dot {
  width: 10px;
  height: 10px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(255, 255, 255, .05);
}

.page-faq .check-copy h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  color: var(--c-white);
}

.page-faq .check-copy p {
  margin: 0 0 8px;
  font-size: 14.5px;
  color: var(--c-body);
}

.page-faq .check-out {
  margin-bottom: 0 !important;
  padding-top: 8px;
  border-top: 1px dashed rgba(42, 54, 84, .9);
  font-size: 13.5px !important;
  color: var(--c-slate) !important;
}

.page-faq .callout-title {
  margin: 0 0 6px;
  font-weight: 700;
  color: var(--c-white);
}

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

/* ---------- 时间轴 ---------- */
.page-faq .timeline {
  position: relative;
  display: grid;
  gap: 0;
  margin-bottom: 22px;
  padding-left: 20px;
}

.page-faq .timeline::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-violet), rgba(124, 77, 255, .15));
}

.page-faq .tl-item {
  position: relative;
  padding: 0 0 26px 0;
}

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

.page-faq .tl-item::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-violet);
  box-shadow: 0 0 0 4px rgba(124, 77, 255, .16);
}

.page-faq .tl-mark {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--c-violet);
  text-transform: uppercase;
}

.page-faq .tl-body h3 {
  margin: 0 0 8px;
  font-size: 16.5px;
  color: var(--c-white);
}

.page-faq .tl-body p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  color: var(--c-body);
}

.page-faq .inline-note {
  margin: 0;
  padding: 14px 16px;
  border-left: 2px solid var(--c-cyan);
  background: rgba(0, 229, 255, .05);
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 14px;
  color: var(--c-body);
}

.page-faq .inline-link {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(0, 229, 255, .4);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .inline-link:hover,
.page-faq .inline-link:focus-visible {
  color: var(--c-white);
  border-bottom-color: var(--c-white);
  outline: none;
}

/* ---------- 使用记录 ---------- */
.page-faq .record-panel {
  padding: 0;
  overflow: hidden;
  margin-bottom: 26px;
}

.page-faq .record-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--c-line);
  background: rgba(7, 13, 31, .6);
}

.page-faq .record-filter {
  padding: 5px 12px;
  border: 1px solid var(--c-line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--c-slate);
  background: rgba(17, 27, 51, .8);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .record-filter.is-active {
  color: var(--c-space);
  background: var(--c-cyan);
  border-color: var(--c-cyan);
  font-weight: 700;
}

.page-faq .record-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .record-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(42, 54, 84, .65);
  font-size: 13.5px;
  transition: background .2s var(--ease);
}

.page-faq .record-row:last-child {
  border-bottom: 0;
}

.page-faq .record-row:hover {
  background: rgba(0, 229, 255, .05);
}

.page-faq .record-time {
  color: var(--c-slate);
  font-size: 12.5px;
  letter-spacing: .06em;
}

.page-faq .record-league {
  color: var(--c-white);
  font-weight: 600;
}

.page-faq .record-action {
  color: var(--c-body);
}

.page-faq .record-notes {
  gap: 22px;
}

.page-faq .note-title {
  margin: 0 0 8px;
  font-size: 15.5px;
  color: var(--c-white);
}

.page-faq .record-notes p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-body);
}

/* ---------- 收藏管理 ---------- */
.page-faq .manage-cards {
  display: grid;
  gap: 16px;
}

.page-faq .manage-card {
  padding: 20px 18px;
  border-top: 2px solid var(--c-cyan);
  background: linear-gradient(160deg, rgba(17, 27, 51, .95), rgba(7, 13, 31, .9));
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .manage-card:nth-child(2) { border-top-color: var(--c-violet); }
.page-faq .manage-card:nth-child(3) { border-top-color: var(--c-orange); }

.page-faq .manage-card:hover {
  transform: translateY(-3px);
}

.page-faq .manage-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--c-body);
}

/* ---------- 客服 ---------- */
.page-faq .support-panel {
  display: grid;
  gap: 1px;
  padding: 0;
  overflow: hidden;
  margin-bottom: 20px;
  background: var(--c-line);
}

.page-faq .support-item {
  display: grid;
  gap: 6px;
  padding: 18px;
  background: var(--c-panel);
}

.page-faq .support-label {
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--c-slate);
}

.page-faq .support-value {
  font-family: var(--f-mono);
  font-size: 16px;
  color: var(--c-cyan);
  word-break: break-word;
}

.page-faq .support-note {
  font-size: 13px;
  color: var(--c-slate);
}

/* ---------- FAQ 折叠 ---------- */
.page-faq .faq-accordion {
  border-top: 1px solid var(--c-line);
}

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

.page-faq .faq-q summary {
  position: relative;
  padding: 18px 42px 18px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  color: var(--c-white);
  transition: color .2s var(--ease);
}

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

.page-faq .faq-q summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-size: 18px;
  color: var(--c-cyan);
  transition: transform .25s var(--ease);
}

.page-faq .faq-q[open] summary::after {
  content: "–";
  transform: translateY(-50%) rotate(180deg);
}

.page-faq .faq-q summary:hover,
.page-faq .faq-q summary:focus-visible {
  color: var(--c-cyan);
  outline: none;
}

.page-faq .faq-a {
  padding: 0 0 20px;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--c-body);
}

/* ---------- 底部导航 ---------- */
.page-faq .tutorial-foot {
  padding: 26px 22px;
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-orange);
  border-radius: var(--radius);
  background: linear-gradient(120deg, rgba(255, 122, 26, .08), rgba(17, 27, 51, .92));
  display: grid;
  gap: 16px;
}

.page-faq .tutorial-foot p {
  margin: 0;
  font-size: 14.5px;
  color: var(--c-body);
}

.page-faq .tutorial-foot .cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding: 36px 0 56px;
  }

  .page-faq .entry-map-item {
    grid-template-columns: 52px 1fr;
    padding: 17px 20px;
  }

  .page-faq .step-item {
    grid-template-columns: 64px 1fr;
    gap: 18px;
  }

  .page-faq .record-row {
    grid-template-columns: 90px 110px 100px 1fr;
    align-items: center;
    gap: 14px;
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(300px, .65fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .tutorial-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .tutorial-rail {
    position: sticky;
    top: 96px;
  }

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

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

  .page-faq .col-6 {
    grid-column: span 6;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero-copy h1 {
    max-width: 20ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .check-item,
  .page-faq .manage-card,
  .page-faq .rail-link,
  .page-faq .entry-map-item {
    transition: none;
  }

  .page-faq .check-item:hover,
  .page-faq .manage-card:hover {
    transform: none;
  }
}