/* ============ 使用指南页 · page-faq ============ */
.page-faq {
  --faq-soft: rgba(255, 107, 26, 0.08);
  --faq-line: rgba(42, 47, 58, 0.9);
  color: var(--paper);
  font-family: var(--font-cn);
  overflow-x: clip;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

.page-faq .faq-item,
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: 22px 0 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

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

.page-faq .breadcrumb a:hover {
  color: var(--ember);
}

.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 30px 0 8px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -150px;
  width: min(430px, 76vw);
  height: min(430px, 76vw);
  background: linear-gradient(
    140deg,
    rgba(255, 107, 26, 0.3),
    rgba(200, 30, 30, 0.12) 46%,
    rgba(11, 14, 20, 0) 78%
  );
  clip-path: polygon(100% 0, 100% 100%, 0 0);
  pointer-events: none;
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--ember);
}

.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--red));
}

.page-faq .faq-hero__title {
  margin: 0;
  max-width: 17em;
  font-size: clamp(30px, 8vw, 62px);
  font-weight: 900;
  line-height: 1.07;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

/* ---------- 方向标签 ---------- */
.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--mist);
  text-decoration: none;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}

.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
  background: var(--faq-soft);
}

.page-faq .faq-tag--accent {
  border-color: rgba(255, 107, 26, 0.55);
  color: var(--orange);
  background: var(--faq-soft);
}

/* ---------- 问题索引 ---------- */
.page-faq .faq-index__label {
  margin: 34px 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0 26px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 8px;
  border-bottom: 1px solid var(--faq-line);
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  background: var(--faq-soft);
  padding-left: 14px;
}

.page-faq .faq-index__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

/* ---------- 章节头 ---------- */
.page-faq .faq-group {
  padding-top: 72px;
  padding-bottom: 8px;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 10px;
  margin-bottom: 26px;
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-size: clamp(34px, 9vw, 56px);
  line-height: 1;
  letter-spacing: 0.02em;
  color: rgba(255, 107, 26, 0.34);
}

.page-faq .faq-group__title {
  position: relative;
  margin: 0;
  padding-left: 16px;
  max-width: 20em;
  font-size: clamp(24px, 5.6vw, 40px);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.22em;
  bottom: 0.22em;
  width: 2px;
  background: linear-gradient(180deg, var(--orange), var(--red));
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 36em;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure {
  margin: 0 0 28px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 三步路径 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 18px;
  margin: 0 0 30px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-flow__step {
  position: relative;
  padding-left: 32px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-flow__step::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 7px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 4px rgba(255, 107, 26, 0.14);
}

.page-faq .faq-flow__step::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 23px;
  bottom: -18px;
  width: 1px;
  background: linear-gradient(180deg, rgba(255, 107, 26, 0.5), rgba(42, 47, 58, 0.4));
}

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

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--line);
  border-left: 2px solid rgba(255, 107, 26, 0.45);
  border-radius: var(--radius);
  background: var(--ink-2);
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 107, 26, 0.55);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.28);
}

.page-faq .faq-item[open] {
  border-left-color: var(--orange);
  border-color: rgba(255, 107, 26, 0.4);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 16px 15px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__summary:focus-visible {
  outline: 1px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-item__num {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--orange);
}

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--paper);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--orange);
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 8px;
  width: 18px;
  height: 1.5px;
}

.page-faq .faq-item__sign::after {
  left: 8.25px;
  top: 0;
  width: 1.5px;
  height: 18px;
  transform-origin: center;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__body {
  padding: 0 16px 18px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-item__body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-key {
  display: inline-block;
  padding: 0 6px;
  border-left: 3px solid var(--orange);
  background: var(--faq-soft);
  font-family: var(--font-mono);
  font-size: 0.94em;
  color: var(--ember);
}

/* ---------- 导出格式清单 ---------- */
.page-faq .faq-formats {
  display: grid;
  gap: 10px;
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-formats li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding-bottom: 9px;
  border-bottom: 1px dashed var(--faq-line);
  font-size: 15px;
  line-height: 1.7;
}

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

.page-faq .faq-formats__key {
  flex: 0 0 auto;
  min-width: 66px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

/* ---------- 收尾行动 ---------- */
.page-faq .faq-cta {
  padding-top: 76px;
  padding-bottom: 88px;
}

.page-faq .faq-cta__box {
  position: relative;
  padding: 28px 22px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(255, 107, 26, 0.16), rgba(11, 14, 20, 0) 62%),
    var(--ink-2);
}

.page-faq .faq-cta__title {
  margin: 0;
  max-width: 20em;
  font-size: clamp(22px, 5vw, 34px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-cta__text {
  margin: 14px 0 0;
  max-width: 34em;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

/* ============ 断点 ============ */
@media (min-width: 640px) {
  .page-faq .faq-hero {
    padding-top: 40px;
  }

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

  .page-faq .faq-item__summary {
    padding: 18px 20px 17px;
    gap: 16px;
  }

  .page-faq .faq-item__body {
    padding: 0 20px 20px 49px;
  }

  .page-faq .faq-cta__box {
    padding: 34px 30px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-group {
    padding-top: 96px;
  }

  .page-faq .faq-flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 30px;
    margin-bottom: 38px;
  }

  .page-faq .faq-flow__step {
    padding-left: 0;
    padding-top: 26px;
  }

  .page-faq .faq-flow__step::before {
    left: 0;
    top: 4px;
  }

  .page-faq .faq-flow__step::after {
    left: 18px;
    right: -30px;
    top: 8px;
    bottom: auto;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg, rgba(255, 107, 26, 0.5), rgba(42, 47, 58, 0.35));
  }

  .page-faq .faq-flow__step:last-child::after {
    display: block;
    background: transparent;
  }

  .page-faq .faq-group__head {
    grid-template-columns: 120px minmax(0, 1fr);
    grid-template-areas:
      "num title"
      "num lead";
    align-items: start;
    column-gap: 24px;
    row-gap: 14px;
  }

  .page-faq .faq-group__num {
    grid-area: num;
  }

  .page-faq .faq-group__title {
    grid-area: title;
  }

  .page-faq .faq-group__lead {
    grid-area: lead;
  }

  .page-faq .faq-figure {
    margin-bottom: 38px;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-hero__lead {
    font-size: 18px;
  }

  .page-faq .faq-list {
    gap: 12px;
  }

  .page-faq .faq-cta {
    padding-bottom: 104px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-index__link,
  .page-faq .faq-tag {
    transition: none;
  }

  .page-faq .faq-item:hover {
    transform: none;
  }
}
<<<END>>>