:root {
  --bg: #ffffff; --ink: #0f1222; --text: #1c2033; --dim: #5b6076; --line: #e6e8ef; --card: #f6f7fb;
  --learn: #3d5afe; --learn-dark: #2a3fd6; --clinic: #0a6e8f; --clinic-dark: #064b63; --accent: #3d5afe;
  --radius: 20px; --max: 1080px;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #0b0d16; --ink: #ffffff; --text: #e8eaf2; --dim: #9aa0b5; --line: #232739; --card: #141829; }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif; color: var(--text); background: var(--bg); line-height: 1.55; }
a { color: var(--accent); }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
header.top { display: flex; align-items: center; justify-content: space-between; padding: 18px 0; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: -0.02em; color: var(--ink); text-decoration: none; font-size: 20px; }
.brand svg { width: 32px; height: 32px; }
nav a { color: var(--dim); text-decoration: none; margin-left: 20px; font-size: 15px; }
nav a:hover { color: var(--ink); }
.hero { padding: 56px 0 32px; }
.hero h1 { font-size: clamp(34px, 6vw, 60px); line-height: 1.05; letter-spacing: -0.03em; margin: 0 0 16px; color: var(--ink); }
.hero p { font-size: 19px; color: var(--dim); max-width: 640px; margin: 0 0 28px; }
.apps { display: grid; gap: 20px; grid-template-columns: 1fr; margin: 28px 0 56px; }
@media (min-width: 760px) { .apps { grid-template-columns: 1fr 1fr; } }
.app { border-radius: var(--radius); padding: 28px; color: #fff; position: relative; overflow: hidden; }
.app.learn { background: linear-gradient(135deg, #4f6bff, var(--learn-dark)); }
.app.clinic { background: linear-gradient(135deg, #17a2c4, var(--clinic-dark)); }
.app h2 { margin: 0 0 6px; font-size: 26px; letter-spacing: -0.02em; }
.app p { margin: 0 0 18px; opacity: 0.9; }
.app ul { margin: 0 0 22px; padding-left: 18px; opacity: 0.95; }
.badges { display: flex; gap: 10px; flex-wrap: wrap; }
.badge { display: inline-flex; align-items: center; gap: 8px; background: rgba(0,0,0,0.35); color: #fff; text-decoration: none; padding: 10px 14px; border-radius: 12px; font-size: 14px; font-weight: 600; border: 1px solid rgba(255,255,255,0.25); }
.badge.soon { opacity: 0.6; pointer-events: none; }
.grid { display: grid; gap: 16px; grid-template-columns: 1fr; margin: 0 0 56px; }
@media (min-width: 760px) { .grid { grid-template-columns: repeat(3, 1fr); } }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 20px; }
.card h3 { margin: 0 0 6px; font-size: 17px; color: var(--ink); }
.card p { margin: 0; color: var(--dim); font-size: 15px; }
.note { border-left: 4px solid var(--accent); background: var(--card); padding: 14px 16px; border-radius: 0 12px 12px 0; color: var(--dim); font-size: 15px; margin: 0 0 56px; }
article { max-width: 760px; padding: 24px 0 64px; }
article h1 { font-size: clamp(30px, 5vw, 44px); letter-spacing: -0.03em; color: var(--ink); margin: 0 0 6px; }
article .meta { color: var(--dim); margin: 0 0 28px; }
article h2 { font-size: 22px; margin: 36px 0 8px; color: var(--ink); }
article h3 { font-size: 17px; margin: 24px 0 6px; color: var(--ink); }
article p, article li { font-size: 16.5px; }
article table { border-collapse: collapse; width: 100%; font-size: 15px; }
article th, article td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
footer { border-top: 1px solid var(--line); padding: 28px 0 40px; color: var(--dim); font-size: 14px; display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: space-between; }
footer a { color: var(--dim); text-decoration: none; margin-right: 16px; }