:root {
  --cases-blue: #2c4a7c;
  --cases-deep: #1e3a66;
  --cases-panel: #23426f;
  --cases-footer: #142a4a;
  --cases-gold: #e8943a;
  --cases-cream: #f4efe4;
  --cases-muted: #c9d5e5;
  --cases-border: #5c7ba8;
  --cases-max: 1200px;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--cases-blue); color: var(--cases-cream); font-family: system-ui, -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif; }
img { display: block; max-width: 100%; }
.cases-container { width: min(100% - 48px, var(--cases-max)); margin: 0 auto; }

.cases-hero { background: var(--cases-blue); padding: 76px 0 84px; }
.breadcrumb { display: flex; gap: 10px; margin-bottom: 28px; color: var(--cases-muted); font-size: 13px; }
.breadcrumb a:hover { color: var(--cases-cream); }
.cases-kicker, .toolbar-label { margin: 0 0 12px; color: var(--cases-gold); font: 13px system-ui, -apple-system, 'Segoe UI', 'Microsoft YaHei', sans-serif; letter-spacing: 3px; }
.cases-hero h1 { margin: 0 0 18px; font-size: clamp(42px, 6vw, 72px); line-height: 1.08; }
.cases-hero p:last-child { max-width: 720px; margin: 0; color: var(--cases-muted); font-size: 17px; line-height: 1.85; }

.cases-toolbar { background: var(--cases-panel); border-top: 1px solid rgba(255,255,255,.08); border-bottom: 1px solid rgba(255,255,255,.08); }
.toolbar-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; padding: 28px 0; }
.toolbar-inner h2 { margin: 0; font-size: 28px; }
.filter-list { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 10px; }
.filter-btn, .page-btn { border: 1px solid var(--cases-border); background: transparent; color: var(--cases-muted); cursor: pointer; font: inherit; transition: .2s ease; }
.filter-btn { padding: 9px 18px; border-radius: 999px; font-size: 14px; }
.filter-btn:hover, .filter-btn.active { border-color: var(--cases-gold); color: #142a4a; background: var(--cases-gold); }

.cases-list-section { background: var(--cases-blue); padding: 34px 0 76px; }
.list-meta { display: flex; justify-content: space-between; gap: 16px; margin-bottom: 22px; color: var(--cases-muted); font-size: 13px; }
.case-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; min-height: 510px; }
.case-card { overflow: hidden; border: 1px solid var(--cases-border); border-radius: 12px; background: rgba(244,239,228,.06); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease; }
.case-card:hover { transform: translateY(-4px); border-color: var(--cases-gold); box-shadow: 0 18px 34px rgba(0,0,0,.22); }
.case-image { aspect-ratio: 16 / 10; background: center/cover no-repeat; }
.case-info { padding: 20px 22px 22px; }
.case-tag { display: inline-block; margin-bottom: 12px; color: var(--cases-gold); font: 12px ui-monospace, SFMono-Regular, Consolas, monospace; }
.case-name { margin: 0 0 10px; font-size: 19px; line-height: 1.45; }
.case-params { margin: 0 0 18px; color: var(--cases-muted); font: 12px/1.7 ui-monospace, SFMono-Regular, Consolas, monospace; }
.case-link { color: var(--cases-gold); font-size: 14px; }
.case-link:hover { color: var(--cases-cream); }

.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 36px; }
.page-btn { min-width: 40px; height: 40px; padding: 0 12px; border-radius: 8px; }
.page-btn:hover:not(:disabled), .page-btn.active { border-color: var(--cases-gold); background: var(--cases-gold); color: #142a4a; }
.page-btn:disabled { cursor: not-allowed; opacity: .45; }

.cases-cta { background: var(--cases-deep); padding: 72px 0; }
.cta-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.cta-inner h2 { margin: 0 0 8px; font-size: clamp(28px, 4vw, 42px); }
.cta-inner p:last-child { margin: 0; color: var(--cases-muted); }
.cta-button { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; padding: 14px 24px; border-radius: 8px; background: var(--cases-gold); color: #142a4a; font-weight: 700; }
.cta-button:hover { background: #f4c888; }

.site-footer { background: var(--cases-footer); }
.footer-inner { display: flex; justify-content: space-between; gap: 32px; padding: 52px 0 36px; }
.footer-brand { max-width: 420px; }
.footer-brand p, .footer-links a { color: var(--cases-muted); font-size: 13px; line-height: 1.8; }
.footer-brand p { margin: 16px 0 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; }
.brand-mark { display: grid; place-items: center; width: 32px; height: 32px; border-radius: 7px; background: var(--cases-gold); color: #142a4a; font-weight: 800; }
.brand-text { color: var(--cases-cream); font-size: 18px; font-weight: 700; }
.footer-links { display: flex; flex-wrap: wrap; align-content: flex-start; gap: 10px 24px; }
.footer-links a:hover { color: var(--cases-cream); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding: 20px 0 28px; border-top: 1px solid rgba(255,255,255,.12); color: #8fa0b3; font-size: 12px; }

@media (max-width: 900px) {
  .toolbar-inner { align-items: flex-start; flex-direction: column; }
  .filter-list { justify-content: flex-start; }
  .case-grid { grid-template-columns: repeat(2, 1fr); min-height: 0; }
}
@media (max-width: 640px) {
  .cases-container { width: min(100% - 32px, var(--cases-max)); }
  .cases-hero { padding: 48px 0 56px; }
  .cases-hero h1 { font-size: 42px; }
  .cases-hero p:last-child { font-size: 15px; }
  .filter-list { width: 100%; display: grid; grid-template-columns: 1fr; }
  .filter-btn { width: 100%; padding-inline: 8px; }
  .case-grid { grid-template-columns: 1fr; }
  .list-meta, .cta-inner, .footer-inner, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .cases-list-section { padding-bottom: 54px; }
  .cases-cta { padding: 54px 0; }
  .cta-button { width: 100%; }
  .footer-links { gap: 8px 18px; }
}