:root{
    --primary:#2563eb;
    --primary2:#1d4ed8;
    --bg:#f4f7fb;
    --text:#172033;
}
*{box-sizing:border-box}
body{
    margin:0;background:linear-gradient(145deg,#eef4ff,#f8fafc);
    color:var(--text);font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
.app-shell{min-height:100vh;max-width:1100px;margin:auto}
.app-header{
    margin:0 0 18px;padding:28px 18px 22px;
    color:white;background:linear-gradient(135deg,#2563eb,#4f46e5);
    border-radius:0 0 28px 28px;display:flex;align-items:center;justify-content:space-between;
    box-shadow:0 12px 30px rgba(37,99,235,.20)
}
.app-header h1{font-size:clamp(1.55rem,5vw,2.25rem);font-weight:800;margin:3px 0 4px}
.app-header p{margin:0;opacity:.9}
.eyebrow{font-size:.75rem;letter-spacing:2px;font-weight:800;opacity:.8}
.home-icon{font-size:2.8rem;opacity:.9;padding-left:12px}
.big-button{
    min-height:116px;width:100%;display:flex;align-items:center;gap:18px;
    padding:22px 20px;text-decoration:none;color:#172033;background:#fff;
    border:1px solid #e6ebf3;border-radius:24px;
    box-shadow:0 8px 24px rgba(15,23,42,.07);
    transition:.18s ease;touch-action:manipulation
}
.big-button:hover{transform:translateY(-3px);box-shadow:0 14px 30px rgba(37,99,235,.14);color:#172033}
.big-button:active{transform:scale(.98)}
.big-icon{
    width:70px;height:70px;flex:0 0 70px;border-radius:20px;
    display:grid;place-items:center;background:#eef4ff;font-size:2.2rem
}
.button-text{display:flex;flex-direction:column;gap:4px;min-width:0}
.button-text strong{font-size:1.18rem;letter-spacing:.3px}
.button-text small{font-size:.92rem;color:#64748b}
.arrow{margin-left:auto;font-size:1.45rem;color:#94a3b8}
footer{text-align:center;color:#64748b;padding:20px;font-size:.85rem}
.page-shell{max-width:1000px;margin:auto;padding:18px}
.back-btn{
    display:inline-flex;align-items:center;padding:13px 18px;border-radius:14px;
    background:#fff;text-decoration:none;color:#172033;font-weight:700;box-shadow:0 5px 18px rgba(15,23,42,.07)
}
.page-title{font-weight:800;margin:22px 0 18px}
.app-card{border:0;border-radius:22px;box-shadow:0 8px 24px rgba(15,23,42,.07)}
.empty-state{text-align:center;padding:55px 20px;color:#64748b}
@media(max-width:576px){
    .app-header{padding:24px 16px 20px;border-radius:0 0 24px 24px}
    .home-icon{font-size:2.2rem}
    .big-button{min-height:105px;padding:18px 16px;border-radius:20px;gap:14px}
    .big-icon{width:62px;height:62px;flex-basis:62px;font-size:1.9rem;border-radius:17px}
    .button-text strong{font-size:1.05rem}
    .button-text small{font-size:.82rem}
}
@media(prefers-reduced-motion:reduce){.big-button{transition:none}}