:root {
  color-scheme: light;
  --strip-height: 118px;
  --gap: 14px;
  --duration: 42s;
  --card-width: clamp(250px, 30vw, 360px);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
               "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: transparent; }
body { overflow: hidden; }
.ad-strip {
  position: relative;
  width: 100%;
  min-height: var(--strip-height);
  overflow: hidden;
  background: linear-gradient(90deg, rgba(255,255,255,.98), rgba(248,250,252,.98));
  border-top: 1px solid rgba(148,163,184,.24);
  border-bottom: 1px solid rgba(148,163,184,.24);
}
.ad-strip::before, .ad-strip::after {
  content: "";
  position: absolute;
  inset-block: 0;
  z-index: 3;
  width: min(8vw, 72px);
  pointer-events: none;
}
.ad-strip::before {
  left: 0;
  background: linear-gradient(90deg, #fff, rgba(255,255,255,0));
}
.ad-strip::after {
  right: 0;
  background: linear-gradient(270deg, #fff, rgba(255,255,255,0));
}
.ad-track {
  display: flex;
  width: max-content;
  animation: marquee var(--duration) linear infinite;
  will-change: transform;
}
.ad-group {
  display: flex;
  flex: 0 0 auto;
  gap: var(--gap);
  padding: 10px var(--gap) 10px 0;
}
.ad-card {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr) 28px;
  align-items: center;
  gap: 12px;
  width: var(--card-width);
  min-height: calc(var(--strip-height) - 20px);
  padding: 12px 14px;
  overflow: hidden;
  border-radius: 18px;
  color: var(--text, #fff);
  background: linear-gradient(135deg, var(--c1), var(--c2));
  box-shadow: 0 8px 24px rgba(15,23,42,.16);
  text-decoration: none;
}
.ad-card:hover, .ad-card:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(15,23,42,.22);
  outline: 3px solid rgba(255,255,255,.72);
  outline-offset: -5px;
}
.ad-card__visual {
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  overflow: hidden;
  border-radius: 15px;
  background: rgba(255,255,255,.18);
  border: 1px solid rgba(255,255,255,.24);
  font-weight: 800;
  font-size: 23px;
  letter-spacing: -.04em;
}
.ad-card__visual img { width: 100%; height: 100%; object-fit: cover; }
.ad-card__copy { min-width: 0; }
.ad-card__title {
  display: block;
  margin-bottom: 5px;
  overflow: hidden;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.15;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.ad-card__description {
  display: -webkit-box;
  overflow: hidden;
  font-size: 13px;
  line-height: 1.45;
  opacity: .94;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}
.ad-card__arrow { font-size: 25px; line-height: 1; opacity: .88; }
.ad-empty {
  display: grid;
  place-items: center;
  width: 100vw;
  min-height: var(--strip-height);
  padding: 16px;
  color: #475569;
  font-size: 14px;
}
.ad-strip:hover .ad-track, .ad-strip:focus-within .ad-track {
  animation-play-state: paused;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}
@media (max-width: 600px) {
  :root {
    --strip-height: 104px;
    --gap: 10px;
    --card-width: min(82vw, 310px);
  }
  .ad-group { padding-block: 8px; }
  .ad-card {
    grid-template-columns: 58px minmax(0, 1fr) 22px;
    min-height: calc(var(--strip-height) - 16px);
    padding: 10px 12px;
    border-radius: 15px;
  }
  .ad-card__visual {
    width: 58px;
    height: 58px;
    border-radius: 12px;
    font-size: 19px;
  }
  .ad-card__title { font-size: 16px; }
  .ad-card__description { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  body { overflow: auto; }
  .ad-strip { overflow-x: auto; scroll-snap-type: x proximity; }
  .ad-track { animation: none; }
  .ad-group[aria-hidden="true"] { display: none; }
  .ad-card { scroll-snap-align: start; }
}