/* 客户案例页样式（复用 main.css 设计令牌） */

.breadcrumb { color: var(--text-inv-muted); }

.case-jump-section { padding-block: clamp(40px, 4.4vw, 64px); }

.case-hero {
  position: relative;
  overflow: hidden;
  background: var(--dark-900);
  border-bottom: 1px solid var(--line-dark);
}
.case-hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(110% 80% at 15% 0%, #000 10%, transparent 68%);
  -webkit-mask-image: radial-gradient(110% 80% at 15% 0%, #000 10%, transparent 68%);
  pointer-events: none;
}
.case-hero__inner {
  position: relative;
  max-width: 880px;
  padding-block: clamp(44px, 5vw, 76px);
}
.case-hero h1 { margin: 20px 0; color: #fff; font-size: 2.9rem; line-height: 1.2; }
.case-hero__lead { font-size: 1.04rem; color: #a9b4c2; }

.case-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}
.case-hero__meta span {
  padding: 7px 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  color: var(--text-inv-muted);
}

.case-jump { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.case-jump a {
  display: grid;
  gap: 8px;
  padding: 22px 24px;
  background: var(--light-000);
  border: 1px solid var(--line-light);
  border-radius: var(--radius-card);
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.case-jump a:hover { border-color: var(--accent); transform: translateY(-2px); }
.case-jump strong { font-size: 1.05rem; color: var(--text-strong); }
.case-jump em { font-style: normal; font-size: 0.88rem; color: var(--text-body); }

/* 案例主体 */
.case-study { padding-block: var(--section-y); background: var(--light-100); }
.case-study--alt { background: var(--light-000); border-block: 1px solid var(--line-light); }

.case-study__head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--line-light);
}
.case-study--alt .case-study__head { border-bottom-color: var(--line-light); }
.case-study__brand {
  display: flex;
  align-items: center;
  gap: 16px;
}
.case-study__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  min-width: 52px;
  height: 52px;
  padding-inline: 14px;
  border-radius: var(--radius-control);
  background: var(--dark-800);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.case-study__brand h2 { font-size: 1.9rem; }
.case-study__brand p { font-size: 0.9rem; color: var(--text-muted); }
.case-study__tags { display: flex; flex-wrap: wrap; gap: 8px; }
.case-study__tags span {
  padding: 6px 12px;
  border: 1px solid var(--line-light);
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  color: var(--text-body);
  font-family: var(--font-mono);
}

.case-facts {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0;
  background: var(--line-light);
  border: 1px solid var(--line-light);
  border-radius: var(--radius-card);
  overflow: hidden;
}
.case-facts > div { display: grid; gap: 4px; padding: 20px; background: var(--light-000); }
.case-study--alt .case-facts > div { background: var(--light-100); }
.case-facts strong { font-family: var(--font-mono); font-size: 1.35rem; color: var(--text-strong); }
.case-facts span { font-size: 0.8rem; color: var(--text-body); }

.case-columns {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 44px);
  margin-bottom: clamp(28px, 3vw, 44px);
}
.case-columns h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
  font-size: 1.15rem;
}
.case-columns h3 span { color: var(--accent); }

.case-list { display: grid; gap: 14px; }
.case-list li {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 12px;
  font-size: 0.94rem;
  color: var(--text-body);
}
.case-list li b {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--teal-soft);
  color: var(--teal);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 600;
}
.case-list--solution li b { background: var(--accent-soft); color: var(--accent); }

.case-gallery { display: grid; gap: 16px; }
.case-gallery__wide {
  margin: 0;
  border: 1px solid var(--line-light);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #0d1013;
}
.case-gallery__pair { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.case-gallery figure { margin: 0; }
.case-gallery img { width: 100%; display: block; }
.case-gallery__wide img { aspect-ratio: 20 / 9; object-fit: cover; }
.case-gallery__pair img { aspect-ratio: 16 / 9; object-fit: cover; background: #fff; }
.case-gallery figcaption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-light);
  background: var(--light-000);
  font-size: 0.82rem;
  color: var(--text-body);
}
.case-gallery__pair figure {
  border: 1px solid var(--line-light);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: #fff;
}

.case-quote {
  display: grid;
  gap: 14px;
  margin-top: clamp(28px, 3vw, 44px);
  padding: clamp(22px, 2.6vw, 32px);
  background: var(--dark-850);
  border-radius: var(--radius-card);
  border-left: 3px solid var(--accent);
}
.case-quote p { font-size: 1rem; color: var(--text-inv); line-height: 1.85; }
.case-quote footer { font-size: 0.84rem; color: var(--text-inv-muted); }

.case-source {
  margin-top: 26px;
  font-size: 0.82rem;
  color: var(--text-body);
}

@media (max-width: 1024px) {
  .case-hero h1 { font-size: 2.3rem; }
  .case-facts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .case-columns { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 720px) {
  .case-jump { grid-template-columns: minmax(0, 1fr); }
  .case-study__brand h2 { font-size: 1.5rem; }
  .case-gallery__pair { grid-template-columns: minmax(0, 1fr); }
  .case-gallery__wide img { aspect-ratio: 16 / 10; }
}

@media (max-width: 640px) {
  .case-hero h1 { font-size: 1.95rem; }
  .case-facts { grid-template-columns: minmax(0, 1fr); }
  .case-study__badge { width: auto; min-width: 44px; height: 44px; padding-inline: 11px; font-size: 0.72rem; }
}