:root { color-scheme: light dark; --bg-start: #ffffff; --bg-end: #d0e9fd; --text: #1d1d1f; --muted: #6e6e73; --link: #0066cc; --card-bg: #ffffff; --card-border: #e5e5ea; --card-hover-bg: #f5f5f7; --card-hover-border: #d2d2d7; }
@media (prefers-color-scheme: dark) { :root { --bg-start: #1c1c1e; --bg-end: #0e2440; --text: #f5f5f7; --muted: #aeaeb2; --link: #0a84ff; --card-bg: #2c2c2e; --card-border: #3a3a3c; --card-hover-bg: #38383a; --card-hover-border: #48484a; } }
html, body { margin: 0; }
body { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", sans-serif; -webkit-font-smoothing: antialiased; font-size: 17px; line-height: 1.5; font-weight: 400; padding: 24px; min-height: 100vh; color: var(--text); background-image: linear-gradient(var(--bg-start), var(--bg-end)); background-repeat: no-repeat; background-size: cover; }
a.up { display: inline-block; margin-bottom: 8px; text-decoration: none; color: var(--link); font-size: 13pt; font-weight: 500; }
a.up:hover { text-decoration: underline; }
.top-link-row { max-width: 1280px; margin: 0 auto; }
header.app-header { display: flex; align-items: center; justify-content: center; margin: 12px 0 4px; }
header.app-header img.app-icon { width: 96px; height: 96px; flex-shrink: 0; }
h1 { font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue", sans-serif; font-size: 32pt; font-weight: 480; letter-spacing: -0.02em; line-height: 1.15; margin: 8px 0 8px; color: var(--text); text-align: center; }
p { font-weight: 400; text-align: center; max-width: 760px; margin-left: auto; margin-right: auto; }
.main-subtitle { margin: 0 auto 20px; font-size: 17pt; font-weight: 400; line-height: 1.35; color: var(--muted); letter-spacing: -0.01em; max-width: 760px; text-align: center; }
.split { display: flex; gap: 28px; align-items: flex-start; max-width: 1280px; margin: 28px auto 0; }
.split .split-cards { flex: 1 1 0; min-width: 0; }
.split .split-text { flex: 1 1 0; min-width: 0; }
.split .split-cards .sections { margin: 0; max-width: none; }
.split .split-text p { text-align: left; max-width: none; margin: 0 0 14px; }
@media (max-width: 899px) { .split { flex-direction: column; gap: 20px; } }
.sections { display: flex; flex-direction: column; gap: 16px; max-width: 960px; margin: 28px auto 0; }
a.app-card { display: flex; align-items: center; gap: 20px; padding: 16px; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 12px; text-decoration: none; color: inherit; transition: background-color 0.15s, border-color 0.15s; }
a.app-card:hover { background-color: var(--card-hover-bg); border-color: var(--card-hover-border); }
.app-card picture { display: block; width: 280px; height: 175px; flex-shrink: 0; }
.app-card .thumb { width: 280px; height: 175px; object-fit: cover; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.08); background: var(--card-bg); display: block; flex-shrink: 0; }
.app-card picture .thumb { width: 100%; height: 100%; }
.app-card .text { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.app-card .card-title { font-size: 18pt; font-weight: 500; letter-spacing: -0.01em; color: var(--link); }
.app-card .card-description { font-size: 13pt; font-weight: 400; color: var(--muted); }