/* ==========================================================================
   page-faq — 使用指南
   ========================================================================== */

.page-faq {
  --faq-block-pad: clamp(48px, 7vw, 88px);
  --faq-side-w: minmax(0, 0.82fr);
  --faq-line: var(--line-soft);
}

/* ── 首屏 ────────────────────────────────────────────────────────────── */

.page-faq .tut-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(26px, 4vw, 48px) 0 clamp(40px, 6vw, 76px);
}

.page-faq .tut-hero::before {
  content: "";
  position: absolute;
  inset: -30% -15% -25% -15%;
  z-index: -2;
  background:
    radial-gradient(52% 62% at 84% 4%, rgba(79, 227, 208, 0.17), transparent 64%),
    radial-gradient(42% 56% at 4% 46%, rgba(255, 138, 61, 0.09), transparent 68%);
  pointer-events: none;
}

.page-faq .tut-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: var(--grid) var(--grid);
  opacity: 0.45;
  -webkit-mask-image: radial-gradient(120% 85% at 44% 0%, #000 6%, transparent 76%);
  mask-image: radial-gradient(120% 85% at 44% 0%, #000 6%, transparent 76%);
  pointer-events: none;
}

.page-faq .tut-hero-grid {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
}

@media (min-width: 940px) {
  .page-faq .tut-hero-grid {
    grid-template-columns: minmax(0, 1.52fr) minmax(260px, 0.78fr);
    align-items: end;
  }
}

.page-faq .tut-kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .tut-kicker::before {
  content: "";
  width: 26px;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-faq .tut-hero h1 {
  margin: 0 0 22px;
  font-family: var(--font-sans);
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 18ch;
}

.page-faq .tut-lede {
  margin: 0 0 18px;
  max-width: 42em;
  font-size: clamp(0.9375rem, 1.2vw, 1.0625rem);
  line-height: 1.85;
  color: var(--text-soft);
}

.page-faq .tut-lede--sub {
  color: var(--muted);
  margin-bottom: 26px;
}

.page-faq .tut-hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .tut-hero-side {
  display: grid;
  gap: 12px;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius-xl);
  background: linear-gradient(155deg, rgba(19, 28, 58, 0.95), rgba(14, 22, 48, 0.62));
}

.page-faq .tut-side-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  line-height: 1;
  letter-spacing: -0.05em;
  color: var(--cyan);
}

.page-faq .tut-side-label {
  margin: 0;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--text);
}

.page-faq .tut-side-text {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .tut-inline-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(79, 227, 208, 0.45);
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .tut-inline-link:hover,
.page-faq .tut-inline-link:focus-visible {
  color: var(--cyan-soft);
  border-color: var(--cyan-soft);
}

/* ── 横向步骤条 ──────────────────────────────────────────────────────── */

.page-faq .tut-path {
  padding: clamp(26px, 3.4vw, 40px) 0 clamp(22px, 3vw, 34px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(14, 22, 48, 0.72), rgba(10, 16, 36, 0.2));
}

.page-faq .tut-path-list {
  display: flex;
  margin: 0;
  padding: 2px 2px 12px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.page-faq .tut-path-item {
  position: relative;
  flex: 0 0 auto;
  min-width: 136px;
  padding-right: 30px;
}

.page-faq .tut-path-item::before {
  content: "";
  position: absolute;
  left: 12px;
  right: 20px;
  top: 5.5px;
  height: 1px;
  background: var(--line);
}

.page-faq .tut-path-item:last-child::before {
  display: none;
}

.page-faq .tut-path-node {
  display: block;
  width: 12px;
  height: 12px;
  margin-bottom: 16px;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: var(--ink-900);
  transition: border-color 0.35s ease, background-color 0.35s ease, box-shadow 0.35s ease;
}

.page-faq .tut-path-item[data-state="active"] .tut-path-node {
  border-color: var(--cyan);
  background: var(--cyan);
  box-shadow: 0 0 0 5px var(--cyan-dim);
}

.page-faq .tut-path-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.page-faq .tut-path-item[data-state="active"] .tut-path-num {
  color: var(--cyan);
}

.page-faq .tut-path-name {
  display: block;
  margin-top: 6px;
  font-size: 0.875rem;
  color: var(--text-soft);
  white-space: nowrap;
}

/* ── 右侧浮动索引 ────────────────────────────────────────────────────── */

.page-faq .tut-index {
  display: none;
}

@media (min-width: 1440px) {
  .page-faq .tut-index {
    display: block;
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    width: 150px;
    z-index: 4;
    padding: 18px 16px;
    border: 1px solid var(--line-soft);
    border-radius: var(--radius-md);
    background: rgba(10, 16, 36, 0.82);
    backdrop-filter: blur(6px);
  }
}

.page-faq .tut-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .tut-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
}

.page-faq .tut-index-list a {
  display: block;
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--muted);
  text-decoration: none;
  border-left: 1px solid var(--line);
  padding-left: 10px;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-faq .tut-index-list a:hover,
.page-faq .tut-index-list a:focus-visible {
  color: var(--cyan);
  border-left-color: var(--cyan);
}

/* ── 区块通用 ────────────────────────────────────────────────────────── */

.page-faq .tut-block {
  padding: var(--faq-block-pad) 0;
}

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

.page-faq .tut-head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(26px, 3.6vw, 44px);
}

.page-faq .tut-title {
  margin: 0;
  font-family: var(--font-sans);
  font-size: clamp(1.45rem, 3.2vw, 2.05rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--text);
  max-width: 24ch;
}

.page-faq .tut-sub {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(0.9375rem, 1.1vw, 1rem);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .tut-split {
  display: grid;
  gap: clamp(24px, 3.4vw, 44px);
}

@media (min-width: 960px) {
  .page-faq .tut-split {
    grid-template-columns: minmax(0, 1.68fr) var(--faq-side-w);
    align-items: start;
  }

  .page-faq .tut-split-side {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }
}

/* ── 帮助区地图 ──────────────────────────────────────────────────────── */

.page-faq .tut-map-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

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

.page-faq .tut-map-item {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 14px;
  padding: 18px 20px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(19, 28, 58, 0.5);
  transition: border-color 0.25s ease, transform 0.25s ease;
}

.page-faq .tut-map-item:hover {
  border-color: var(--line);
  transform: translateY(-2px);
}

.page-faq .tut-map-item--current {
  border-color: rgba(79, 227, 208, 0.55);
  background: linear-gradient(140deg, rgba(79, 227, 208, 0.13), rgba(19, 28, 58, 0.62));
}

.page-faq .tut-map-num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
  padding-top: 3px;
}

.page-faq .tut-map-item--current .tut-map-num {
  color: var(--cyan);
}

.page-faq .tut-map-name {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 6px;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .tut-map-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 2px 8px;
  border-radius: var(--pill);
  color: var(--ink-900);
  background: var(--cyan);
}

.page-faq .tut-map-desc {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .tut-map-figure {
  margin: 0;
}

/* ── 步骤流 ──────────────────────────────────────────────────────────── */

.page-faq .tut-flow {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
}

.page-faq .tut-flow-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
  padding: 22px 0;
  border-top: 1px solid var(--line-soft);
}

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

@media (min-width: 620px) {
  .page-faq .tut-flow-item {
    grid-template-columns: 92px minmax(0, 1fr);
    gap: 20px;
    align-items: start;
  }
}

.page-faq .tut-flow-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .tut-flow-item h3 {
  margin: 0 0 8px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-faq .tut-flow-item p {
  margin: 0;
  max-width: 52ch;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ── 旁注卡 ──────────────────────────────────────────────────────────── */

.page-faq .tut-note {
  padding: clamp(20px, 2.4vw, 26px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: rgba(19, 28, 58, 0.55);
}

.page-faq .tut-note--cyan {
  border-color: rgba(79, 227, 208, 0.35);
  background: linear-gradient(150deg, rgba(79, 227, 208, 0.12), rgba(19, 28, 58, 0.6));
}

.page-faq .tut-note-title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .tut-note-list {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-faq .tut-note-list li {
  position: relative;
  padding-left: 16px;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--text-soft);
}

.page-faq .tut-note-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-faq .tut-note-text {
  margin: 0 0 14px;
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--text-soft);
}

.page-faq .tut-note-foot {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.75;
  color: var(--muted);
}

/* ── 宽幅示意图带 ────────────────────────────────────────────────────── */

.page-faq .tut-band {
  margin: 0 auto;
  padding: 0 var(--gutter);
  max-width: var(--maxw);
}

.page-faq .tut-band img {
  width: 100%;
}

/* ── 换设备：三张确认卡 ──────────────────────────────────────────────── */

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

@media (min-width: 860px) {
  .page-faq .tut-verify-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .tut-verify {
  display: grid;
  gap: 10px;
  padding: clamp(22px, 2.4vw, 28px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: linear-gradient(165deg, rgba(19, 28, 58, 0.72), rgba(10, 16, 36, 0.4));
}

.page-faq .tut-verify-num {
  font-family: var(--font-mono);
  font-size: 22px;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--cyan);
}

.page-faq .tut-verify h3 {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.55;
  color: var(--text);
}

.page-faq .tut-verify p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .tut-band-note {
  margin-top: clamp(22px, 3vw, 34px);
  padding: clamp(20px, 2.6vw, 28px);
  border: 1px solid rgba(255, 138, 61, 0.32);
  border-radius: var(--radius-lg);
  background: linear-gradient(150deg, rgba(255, 138, 61, 0.1), rgba(19, 28, 58, 0.5));
}

.page-faq .tut-band-note--plain {
  border-color: var(--line-soft);
  background: rgba(19, 28, 58, 0.5);
}

.page-faq .tut-band-note-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .tut-band-note--plain .tut-band-note-title {
  color: var(--cyan);
}

.page-faq .tut-band-note-text {
  margin: 0;
  max-width: 72ch;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--text-soft);
}

/* ── 导出格式卡 ──────────────────────────────────────────────────────── */

.page-faq .tut-formats {
  display: grid;
  gap: 12px;
}

.page-faq .tut-format {
  padding: 20px 22px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(19, 28, 58, 0.55);
}

.page-faq .tut-format-tag {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .tut-format h3 {
  margin: 0 0 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
}

.page-faq .tut-format p:last-child {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ── 反馈四步 ────────────────────────────────────────────────────────── */

.page-faq .tut-feedback {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

@media (min-width: 900px) {
  .page-faq .tut-feedback {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .tut-feedback-item {
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding: clamp(20px, 2.4vw, 26px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: rgba(19, 28, 58, 0.5);
}

.page-faq .tut-feedback-num {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .tut-feedback-item h3 {
  margin: 0 0 8px;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text);
}

.page-faq .tut-feedback-item p {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ── 常见疑问 ────────────────────────────────────────────────────────── */

.page-faq .tut-faq-list {
  display: grid;
  gap: 10px;
  max-width: 78ch;
}

.page-faq .accordion {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: rgba(19, 28, 58, 0.45);
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.page-faq .accordion[open] {
  border-color: rgba(79, 227, 208, 0.4);
  background: linear-gradient(150deg, rgba(79, 227, 208, 0.08), rgba(19, 28, 58, 0.5));
}

.page-faq .accordion summary {
  cursor: pointer;
  padding: 18px 22px;
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.7;
  color: var(--text);
}

.page-faq .accordion summary::marker {
  color: var(--cyan);
}

.page-faq .accordion-body {
  padding: 0 22px 20px;
}

.page-faq .accordion-body p {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--muted);
}

/* ── 延伸入口 ────────────────────────────────────────────────────────── */

.page-faq .tut-next {
  padding: var(--faq-block-pad) 0 calc(var(--faq-block-pad) + 8px);
  border-top: 1px solid var(--line-soft);
}

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

@media (min-width: 860px) {
  .page-faq .tut-next-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .tut-next-card {
  display: grid;
  gap: 10px;
  padding: clamp(22px, 2.6vw, 30px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  background: rgba(19, 28, 58, 0.45);
  text-decoration: none;
  transition: border-color 0.25s ease, transform 0.25s ease, background-color 0.25s ease;
}

.page-faq .tut-next-card:hover,
.page-faq .tut-next-card:focus-visible {
  border-color: rgba(79, 227, 208, 0.5);
  transform: translateY(-3px);
}

.page-faq .tut-next-card--accent {
  border-color: rgba(255, 138, 61, 0.4);
  background: linear-gradient(155deg, rgba(255, 138, 61, 0.12), rgba(19, 28, 58, 0.5));
}

.page-faq .tut-next-card--accent:hover,
.page-faq .tut-next-card--accent:focus-visible {
  border-color: var(--orange);
}

.page-faq .tut-next-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.16em;
  color: var(--muted);
}

.page-faq .tut-next-card--accent .tut-next-tag {
  color: var(--orange);
}

.page-faq .tut-next-card h2 {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .tut-next-card p:last-child {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.8;
  color: var(--muted);
}

/* ── 动效降级 ────────────────────────────────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .page-faq .tut-map-item,
  .page-faq .tut-next-card,
  .page-faq .tut-path-node,
  .page-faq .accordion {
    transition: none;
  }

  .page-faq .tut-map-item:hover,
  .page-faq .tut-next-card:hover {
    transform: none;
  }
}
<<<END>>>