:root {
  color-scheme: light;
  --sales-ink: #14213d;
  --sales-muted: #52627f;
  --sales-line: #dce5f3;
  --sales-surface: #ffffff;
  --sales-canvas: #f5f8fe;
  --sales-accent: #2458d6;
  --sales-warn: #9a5b00;
  --sales-warn-bg: #fff8dc;
  --sales-shadow: 0 18px 55px rgb(28 57 118 / 12%);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--sales-ink);
  background: var(--sales-canvas);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
}

.sales-topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 58px;
  padding: 10px max(24px, calc((100vw - 1180px) / 2));
  background: rgb(255 255 255 / 92%);
  border-bottom: 1px solid var(--sales-line);
  backdrop-filter: blur(14px);
}
.sales-brand { color: var(--sales-ink); font-weight: 800; text-decoration: none; }
.sales-back { color: var(--sales-accent); font-weight: 700; text-decoration: none; }
.sales-back:hover, .sales-back:focus-visible { text-decoration: underline; }

.sales-shell { width: min(1180px, calc(100% - 40px)); margin: 42px auto 72px; }
.sales-hero {
  padding: clamp(26px, 5vw, 56px);
  border: 1px solid #dbe5ff;
  border-radius: 24px;
  background: linear-gradient(135deg, #edf3ff, #ffffff 64%);
  box-shadow: var(--sales-shadow);
}
.sales-eyebrow { margin: 0 0 8px; color: var(--sales-accent); font-size: .82rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1 { margin: 0; font-size: clamp(2rem, 5vw, 3.4rem); line-height: 1.16; letter-spacing: -.04em; }
.sales-hero p:last-child { max-width: 780px; margin: 16px 0 0; color: var(--sales-muted); }

.sales-notice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  margin: 28px 0;
  padding: 18px 20px;
  border: 1px solid #f1d889;
  border-radius: 16px;
  color: #664100;
  background: var(--sales-warn-bg);
}
.sales-notice strong { color: var(--sales-warn); }
.sales-notice p { margin: 0; }

.sales-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(290px, .85fr); gap: 24px; align-items: start; }
.sales-card {
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid var(--sales-line);
  border-radius: 20px;
  background: var(--sales-surface);
  box-shadow: 0 12px 38px rgb(24 52 104 / 7%);
}
.sales-card h2 { margin: 0 0 18px; font-size: 1.35rem; }
.sales-card h3 { margin: 24px 0 8px; font-size: 1.02rem; }
.sales-card p { margin: 9px 0; }
.sales-list { margin: 0; padding-left: 1.25rem; }
.sales-list li + li { margin-top: 8px; }
.sales-source { color: var(--sales-muted); font-size: .9rem; }
.sales-source code { overflow-wrap: anywhere; }
.sales-current-link {
  display: inline-flex;
  align-items: center;
  margin-top: 16px;
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  font-weight: 800;
  text-decoration: none;
  background: var(--sales-accent);
}
.sales-current-link:hover, .sales-current-link:focus-visible { background: #123eaa; }

.sales-media { margin-top: 28px; }
.sales-media-header { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 14px; }
.sales-media-header h2 { margin: 0; }
.sales-media-header p { margin: 0; color: var(--sales-muted); font-size: .92rem; }
.sales-gallery { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.sales-figure { margin: 0; overflow: hidden; border: 1px solid var(--sales-line); border-radius: 16px; background: var(--sales-surface); box-shadow: 0 10px 28px rgb(24 52 104 / 6%); }
.sales-figure img { display: block; width: 100%; height: auto; background: #eef2f7; }
.sales-figure figcaption { padding: 11px 14px; color: var(--sales-muted); font-size: .85rem; }
.sales-footer { margin-top: 34px; color: var(--sales-muted); font-size: .88rem; text-align: center; }

@media (max-width: 760px) {
  .sales-topbar { padding-inline: 18px; }
  .sales-shell { width: min(100% - 28px, 1180px); margin-top: 22px; }
  .sales-grid { grid-template-columns: 1fr; }
  .sales-gallery { grid-template-columns: 1fr; }
  .sales-media-header { display: block; }
  .sales-media-header p { margin-top: 6px; }
}