/* ============================================================
   解决方案页 · 页面专属样式
   作用域：.page-solutions
   ============================================================ */

.page-solutions {
  background: var(--color-surface);
}

/* ---------- 首屏 ---------- */
.page-solutions__hero {
  position: relative;
  padding-block: calc(var(--space-8) + var(--space-4)) var(--space-6);
  border-bottom: var(--border-thin) solid var(--color-line);
  background-color: var(--color-surface);
  background-image: linear-gradient(
    122deg,
    var(--color-primary-soft) 0%,
    color-mix(in srgb, var(--color-primary-soft) 38%, transparent) 30%,
    transparent 58%
  );
}

.page-solutions__hero .crumbs {
  margin: 0 0 var(--space-4);
}

.page-solutions__eyebrow {
  margin: 0 0 var(--space-2);
  color: var(--color-primary);
}

.page-solutions__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-display);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
  max-width: 20ch;
}

.page-solutions__lede {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions__hero-grid {
  margin-block-start: var(--space-6);
  display: grid;
  gap: var(--space-4);
}

.page-solutions__figures {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--border-thin);
  background: color-mix(in srgb, var(--color-primary) 26%, transparent);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 26%, transparent);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-solutions__fig {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: var(--space-3);
  background: var(--color-primary-soft);
}

.page-solutions__fig-num {
  font-family: var(--font-mono);
  font-size: var(--text-figure);
  font-weight: var(--weight-heading);
  line-height: 1.05;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-solutions__fig-label {
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions__position {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-3);
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions__position p {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
  max-width: var(--measure);
}

.page-solutions__position-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

/* ---------- 流程总览图 ---------- */
.page-solutions__overview {
  margin: 0;
}

.page-solutions__overview-note {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ---------- 阶段通用 ---------- */
.page-solutions__stage-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.page-solutions__stage-no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-primary);
  border: var(--border-thin) solid color-mix(in srgb, var(--color-primary) 45%, transparent);
  border-radius: var(--radius-pill);
  padding: 0.3em 0.75em;
  white-space: nowrap;
}

.page-solutions__stage-title {
  flex: 1 1 auto;
  min-width: 12ch;
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  letter-spacing: var(--tracking-heading);
  color: var(--color-ink);
}

.page-solutions__stage-note {
  margin: var(--space-3) 0 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions__stage-note + .page-solutions__stage-note {
  margin-top: var(--space-2);
}

/* ---------- 步骤列表 ---------- */
.page-solutions__steps {
  list-style: none;
  margin: var(--space-4) 0 0;
  padding: 0;
}

.page-solutions__step {
  display: grid;
  gap: var(--space-2);
  padding-block: var(--space-4);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions__step:first-child {
  border-top: var(--border-thin) solid var(--color-line);
}

.page-solutions__step-no {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  line-height: 1;
  font-variant-numeric: tabular-nums;
  color: var(--color-primary);
}

.page-solutions__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-solutions__step-do {
  margin: 0;
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink);
}

.page-solutions__step-side {
  display: grid;
  gap: var(--space-2);
}

.page-solutions__note {
  padding-left: var(--space-2);
  border-left: var(--border-thin) solid var(--color-line);
  transition: background-color 220ms ease, border-color 220ms ease;
}

.page-solutions__note--warn {
  border-left-color: color-mix(in srgb, var(--color-accent) 55%, transparent);
}

.page-solutions__note-key {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  color: var(--color-ink-muted);
}

.page-solutions__note--warn .page-solutions__note-key {
  color: var(--color-accent);
}

.page-solutions__note-val {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

@media (hover: hover) and (pointer: fine) {
  .page-solutions__step:hover .page-solutions__note--warn {
    background: color-mix(in srgb, var(--color-highlight) 58%, transparent);
  }
}

/* ---------- 阶段插图 ---------- */
.page-solutions__figure {
  margin: var(--space-4) 0 0;
}

/* ---------- 标签体系 ---------- */
.page-solutions__zone-intro {
  display: grid;
  gap: var(--space-4);
}

.page-solutions__zone-intro .page-solutions__stage-head {
  margin-bottom: var(--space-2);
}

.page-solutions__figure--inline {
  margin: 0;
}

.page-solutions__tablist {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-block: var(--space-4) var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: var(--border-thin) solid var(--color-line);
}

.page-solutions__zone-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.page-solutions__zone-note {
  margin: 0;
  max-width: var(--measure);
  font-size: var(--text-base);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions__chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

/* ---------- 子栏目分流 ---------- */
.page-solutions__fork {
  margin-block-start: var(--space-4);
  display: grid;
  gap: var(--space-3);
}

.page-solutions__fork-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-2);
  padding: var(--space-4);
  background: var(--color-surface-alt);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
}

.page-solutions__fork-title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-solutions__fork-desc {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

.page-solutions__fork-card .btn {
  margin-top: auto;
}

/* ---------- 问答 ---------- */
.page-solutions__faq {
  margin-block-start: var(--space-4);
}

/* ---------- 继续查阅 ---------- */
.page-solutions__more-heading {
  margin: 0 0 var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-weight: var(--weight-heading);
  line-height: var(--leading-heading);
  color: var(--color-ink);
}

.page-solutions__more {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: var(--border-thin);
  background: var(--color-line);
  border: var(--border-thin) solid var(--color-line);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.page-solutions__more li {
  background: var(--color-surface-alt);
}

.page-solutions__more a {
  display: block;
  padding: var(--space-3) var(--space-4);
  text-decoration: none;
  color: inherit;
}

.page-solutions__more a:hover,
.page-solutions__more a:focus-visible {
  background: var(--color-primary-soft);
}

.page-solutions__more-title {
  display: block;
  font-size: var(--text-base);
  font-weight: var(--weight-heading);
  color: var(--color-primary);
}

.page-solutions__more-desc {
  display: block;
  margin-top: var(--space-1);
  font-size: var(--text-sm);
  line-height: var(--leading-body);
  color: var(--color-ink-soft);
}

/* ============================================================
   响应式：平板与桌面
   ============================================================ */
@media (min-width: 880px) {
  .page-solutions__hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-solutions__position {
    padding-top: 0;
    padding-left: var(--space-4);
    border-top: 0;
    border-left: var(--border-thin) solid var(--color-line);
    min-height: 100%;
  }

  .page-solutions__zone-intro {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-6);
    align-items: start;
  }

  .page-solutions__fork {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
  }

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

@media (min-width: 900px) {
  .page-solutions__step {
    grid-template-columns: minmax(0, 2fr) minmax(0, 6fr) minmax(0, 4fr);
    gap: var(--space-3);
    align-items: start;
  }

  .page-solutions__step-no {
    padding-top: 0.15em;
  }

  .page-solutions__figure--inset {
    width: 78%;
  }

  .page-solutions__figure--inset .media,
  .page-solutions__figure--inset {
    border-radius: var(--radius-lg);
  }
}

@media (max-width: 899px) {
  .page-solutions__figure--inset {
    width: 100%;
  }
}

@media (max-width: 599px) {
  .page-solutions__figures {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-solutions__stage-title {
    font-size: var(--text-2xl);
  }

  .page-solutions__more a {
    padding: var(--space-3);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-solutions__note {
    transition: none;
  }
}