* { box-sizing: border-box; }
body { font-family: system-ui, -apple-system, sans-serif; margin: 0; background: #fafafa; color: #1a1a1a; line-height: 1.6; }
a { color: #1558d6; }
.index, .post { max-width: 760px; margin: 0 auto; padding: 32px 20px 64px; }
.index h1 { font-size: 2rem; margin-bottom: 4px; }
.tagline { color: #666; margin-top: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; margin-top: 24px; }
.card { display: block; background: #fff; border: 1px solid #e3e3e3; border-radius: 12px; overflow: hidden; text-decoration: none; color: inherit; transition: box-shadow .15s; }
.card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.1); }
.card img { width: 100%; aspect-ratio: 16/9; object-fit: cover; display: block; }
.card-body { padding: 14px 16px; }
.card-body h2 { font-size: 1.05rem; margin: 0 0 6px; }
.card-body p { font-size: .9rem; color: #555; margin: 0; }
.post .back { font-size: .9rem; }
.post h1 { font-size: 1.8rem; line-height: 1.25; }
.hero { width: 100%; border-radius: 12px; margin: 8px 0 20px; }
.intro { font-size: 1.1rem; color: #333; }
.video { position: relative; padding-bottom: 56.25%; height: 0; margin: 24px 0; border-radius: 12px; overflow: hidden; }
.video iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }
.item { margin: 28px 0; }
.item h2 { font-size: 1.25rem; display: flex; align-items: baseline; gap: 10px; }
.num { background: #1558d6; color: #fff; border-radius: 6px; font-size: .85rem; padding: 2px 9px; flex-shrink: 0; }
.cta { background: #fff7e6; border: 1px solid #f0d090; border-radius: 12px; padding: 18px 20px; margin: 32px 0; }
.buy { display: inline-block; background: #ff9900; color: #111; font-weight: 600; text-decoration: none; padding: 11px 18px; border-radius: 8px; margin-top: 8px; }
.buy:hover { background: #f08c00; }
.disclosure { font-size: .8rem; color: #777; margin: 0 0 4px; }
.foot { border-top: 1px solid #e3e3e3; margin-top: 40px; padding-top: 16px; }