.page-guides {
  --gd-num-scale: calc(var(--text-figure) * 0.82);
  --gd-rail-top: 96px;
}

/* ---------- 面包屑 ---------- */
.page-guides .gd-crumbs-wrap {
  padding-top: var(--space-3);
  padding-bottom: var(--space-2);
}

/* ---------- 首屏 ---------- */
.page-guides .gd-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
  padding-top: var(--space-6);
  padding-bottom: var(--space-8);
}

.page-guides .gd-hero::before {
  content: "";
  position: absolute;
  z-index: -1;
  top: -20%;
  right: -14%;
  width: 62%;
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  background: radial-gradient(
    circle at center,
    color-mix(in srgb, var(--color-primary) 46%, transparent) 0%,
    transparent 68%
  );
  pointer-events: none;
}

.page-guides .gd-hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--border-thick);
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
}

.page-guides .gd-hero__grid {
  display: grid;
  gap: var(--space-4);
}

.page-guides .gd-hero__kicker {
  margin: 0 0 var(--space-2);
}

.page-guides .gd-hero__title {
  margin: 0 0 var(--space-3);
  max-width: 16ch;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: 1.03;
  letter-spacing: var(--tracking-heading);
  color: var(--color-contrast-ink);
}

.page-guides .gd-hero__intro {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 84%, transparent);
}

.page-guides .gd-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-guides .gd-hero__aside {
  display: grid;
  gap: var(--space-2);
  align-content: end;
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-contrast-line);
}

.page-guides .gd-metric {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: var(--space-2);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-contrast-line);
}

.page-guides .gd-metric:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-guides .gd-metric__num {
  font-family: var(--font-heading);
  font-size: var(--text-4xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: color-mix(in srgb, var(--color-primary) 58%, var(--color-contrast-ink));
}

.page-guides .gd-metric__unit {
  font-size: var(--text-sm);
  line-height: 1.5;
  color: color-mix(in srgb, var(--color-contrast-ink) 74%, transparent);
}

.page-guides .gd-hero__figure {
  margin: var(--space-6) 0 0;
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-2);
}

.page-guides .gd-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 区块标题 ---------- */
.page-guides .gd-section-head {
  max-width: 64ch;
  margin-bottom: var(--space-6);
}

.page-guides .gd-section-head__title {
  margin: var(--space-2) 0 var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-guides .gd-section-head__note {
  margin: 0;
  max-width: 58ch;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 三段路径 ---------- */
.page-guides .gd-paths-section {
  background-color: var(--color-surface);
}

.page-guides .gd-paths {
  display: grid;
  gap: var(--space-3);
}

.page-guides .gd-path {
  position: relative;
  display: block;
  padding: var(--space-3);
  background-color: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
  color: var(--color-ink);
  text-decoration: none;
  transition: transform 160ms ease, box-shadow 160ms ease, border-color 160ms ease;
}

.page-guides .gd-path:hover,
.page-guides .gd-path:focus-visible {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-2);
}

.page-guides .gd-path:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

.page-guides .gd-path__index {
  display: block;
  margin-bottom: var(--space-2);
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  color: var(--color-primary);
}

.page-guides .gd-path__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-guides .gd-path__desc {
  margin: 0 0 var(--space-3);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink-soft);
}

.page-guides .gd-path__meta {
  display: block;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--color-accent);
}

/* ---------- 阶段 ---------- */
.page-guides .gd-stage {
  background-color: var(--color-surface);
}

.page-guides .gd-stage--flip {
  background-color: var(--color-surface-alt);
}

.page-guides .gd-stage__grid {
  display: grid;
  gap: var(--space-6);
}

.page-guides .gd-stage__head {
  margin-bottom: var(--space-4);
}

.page-guides .gd-stage__title {
  margin: var(--space-2) 0 var(--space-2);
  max-width: 24ch;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-guides .gd-stage__note {
  margin: 0;
  max-width: 56ch;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 步骤列表 ---------- */
.page-guides .gd-steps {
  display: grid;
  gap: var(--space-3);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-guides .gd-step {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: var(--space-2);
  padding: var(--space-3);
  background-color: var(--color-surface);
  border: var(--border-thin) solid var(--color-line);
  border-left-width: var(--border-thick);
  border-left-color: var(--color-primary);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-1);
}

.page-guides .gd-stage--flip .gd-step {
  background-color: var(--color-surface);
}

.page-guides .gd-step__num {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: color-mix(in srgb, var(--color-primary) 78%, var(--color-ink));
}

.page-guides .gd-step__body {
  min-width: 0;
}

.page-guides .gd-step__title {
  margin: 0 0 var(--space-1);
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-guides .gd-step__text {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-guides .gd-step__result {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  line-height: 1.7;
  color: var(--color-ink);
}

.page-guides .gd-step__label {
  display: inline-block;
  margin-right: var(--space-1);
  padding-bottom: 1px;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-accent);
  border-bottom: var(--border-thin) solid var(--color-accent);
}

.page-guides .gd-step__time {
  display: inline-block;
  font-size: var(--text-xs);
}

.page-guides .gd-inline-link {
  color: var(--color-accent);
  text-decoration: underline;
  text-decoration-thickness: var(--border-thin);
  text-underline-offset: 3px;
}

.page-guides .gd-inline-link:hover,
.page-guides .gd-inline-link:focus-visible {
  color: var(--color-focus);
}

.page-guides .gd-inline-link:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

/* ---------- 阶段配图 ---------- */
.page-guides .gd-stage__figure {
  margin: 0;
  align-self: start;
}

.page-guides .gd-stage__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2);
  background-color: var(--color-surface-deep);
}

.page-guides .gd-stage__figure figcaption {
  margin-top: var(--space-2);
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
  font-size: var(--text-xs);
  line-height: 1.7;
  color: var(--color-ink-muted);
}

/* ---------- 下一步 ---------- */
.page-guides .gd-next {
  position: relative;
  overflow: hidden;
  background-color: var(--color-contrast-surface);
  color: var(--color-contrast-ink);
}

.page-guides .gd-next::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: var(--border-thick);
  background: linear-gradient(90deg, var(--color-accent), var(--color-primary));
}

.page-guides .gd-next__grid {
  display: grid;
  gap: var(--space-6);
}

.page-guides .gd-next__title {
  margin: var(--space-2) 0 var(--space-2);
  max-width: 20ch;
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-contrast-ink);
}

.page-guides .gd-next__text {
  margin: 0 0 var(--space-3);
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: color-mix(in srgb, var(--color-contrast-ink) 82%, transparent);
}

.page-guides .gd-next__contact {
  margin: 0;
  padding-top: var(--space-2);
  border-top: var(--border-thin) solid var(--color-contrast-line);
  font-size: var(--text-sm);
  line-height: 1.8;
  color: color-mix(in srgb, var(--color-contrast-ink) 70%, transparent);
}

.page-guides .gd-exits {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-guides .gd-exit {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background-color: color-mix(in srgb, var(--color-contrast-ink) 6%, transparent);
  border: var(--border-thin) solid var(--color-contrast-line);
  border-radius: var(--radius-md);
  color: var(--color-contrast-ink);
  text-decoration: none;
  font-size: var(--text-sm);
  line-height: 1.6;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

.page-guides .gd-exit:hover,
.page-guides .gd-exit:focus-visible {
  transform: translateX(2px);
  border-color: var(--color-contrast-accent);
  background-color: color-mix(in srgb, var(--color-contrast-accent) 16%, transparent);
}

.page-guides .gd-exit:focus-visible {
  outline: var(--border-thick) solid var(--color-focus);
  outline-offset: 2px;
}

.page-guides .gd-exit__arrow {
  flex: none;
  color: var(--color-contrast-accent);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 760px) {
  .page-guides .gd-hero {
    padding-top: var(--space-8);
    padding-bottom: var(--section-y);
  }

  .page-guides .gd-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
    gap: var(--space-8);
    align-items: end;
  }

  .page-guides .gd-hero__aside {
    padding-top: 0;
    border-top: 0;
    padding-left: var(--space-3);
    border-left: var(--border-thin) solid var(--color-contrast-line);
  }

  .page-guides .gd-paths {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-items: start;
    gap: var(--space-4);
    padding-bottom: var(--space-3);
  }

  .page-guides .gd-path:nth-child(2) {
    margin-top: var(--space-4);
  }

  .page-guides .gd-path:nth-child(3) {
    margin-top: var(--space-2);
  }

  .page-guides .gd-next__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    gap: var(--space-8);
    align-items: start;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-guides .gd-stage__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr);
    gap: var(--space-8);
    align-items: start;
  }

  .page-guides .gd-stage--flip .gd-stage__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr);
  }

  .page-guides .gd-stage--flip .gd-stage__main {
    grid-column: 2;
    grid-row: 1;
  }

  .page-guides .gd-stage--flip .gd-stage__figure {
    grid-column: 1;
    grid-row: 1;
  }

  .page-guides .gd-stage__figure {
    position: sticky;
    top: var(--gd-rail-top);
  }

  .page-guides .gd-step:nth-child(even) {
    transform: translateX(6px);
  }

  .page-guides .gd-step:nth-child(odd) {
    margin-right: 6px;
  }

  .page-guides .gd-section-head__title,
  .page-guides .gd-stage__title {
    font-size: var(--text-4xl);
  }
}

/* ---------- reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-guides .gd-path,
  .page-guides .gd-exit {
    transition: none;
  }

  .page-guides .gd-path:hover,
  .page-guides .gd-path:focus-visible,
  .page-guides .gd-exit:hover,
  .page-guides .gd-exit:focus-visible {
    transform: none;
  }

  .page-guides .gd-step:nth-child(even),
  .page-guides .gd-step:nth-child(odd) {
    transform: none;
    margin-right: 0;
  }
}