:root {
    --primary: #1e3a5f;
    --primary-light: #2c5282;
    --accent: #2196f3;
    --green: #4caf50;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1a1a1a;
    --text-light: #64748b;
    --radius: 12px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    background: var(--bg);
    color: var(--text);
    max-width: 640px;
    margin: 0 auto;
    padding: 20px 16px;
}
header { text-align: center; padding: 24px 0 8px; }
h1 { font-size: 1.5rem; font-weight: 700; color: var(--primary); }
.subtitle { font-size: 0.85rem; color: var(--text-light); margin-top: 4px; }
h2 { font-size: 1.25rem; font-weight: 700; color: var(--primary); margin-bottom: 8px; }
main { background: var(--card); border-radius: var(--radius); padding: 28px 24px; box-shadow: 0 1px 3px rgba(0,0,0,0.08); }
#hero { text-align: center; }
#hero p { color: var(--text-light); font-size: 0.95rem; margin-bottom: 16px; }
.hint { font-size: 0.8rem; color: var(--text-light); margin-top: 8px; }
.btn-primary {
    display: inline-block;
    padding: 12px 28px;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    min-height: 44px;
    transition: background 0.2s;
}
.btn-primary:hover { background: #1976d2; }
.btn-secondary {
    display: block;
    width: 100%;
    padding: 10px;
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    border-radius: 8px;
    font-size: 0.9rem;
    cursor: pointer;
    margin-top: 16px;
    min-height: 44px;
}
.btn-secondary:hover { background: #e3f2fd; }
#progress {
    width: 100%;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    margin-bottom: 12px;
    overflow: hidden;
}
#progressBar {
    height: 100%;
    background: var(--accent);
    border-radius: 3px;
    transition: width 0.3s ease;
    width: 0%;
}
#stepInfo { font-size: 0.8rem; color: var(--text-light); margin-bottom: 16px; }
#questionArea h3 { font-size: 1.05rem; font-weight: 600; margin-bottom: 16px; color: var(--text); }
.option-btn {
    display: block;
    width: 100%;
    padding: 14px 16px;
    margin-bottom: 10px;
    background: #f1f5f9;
    border: 2px solid transparent;
    border-radius: 8px;
    text-align: left;
    font-size: 0.95rem;
    cursor: pointer;
    min-height: 44px;
    transition: all 0.15s;
    color: var(--text);
}
.option-btn:hover { border-color: var(--accent); background: #e3f2fd; }
.option-btn.selected { border-color: var(--accent); background: #e3f2fd; font-weight: 600; }
.nav-arrows { display: flex; justify-content: space-between; margin-top: 20px; }
.btn-nav {
    padding: 10px 20px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    background: var(--card);
    cursor: pointer;
    font-size: 0.9rem;
    min-height: 44px;
    color: var(--text);
}
.btn-nav:hover { background: #f1f5f9; }
.checklist-item {
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 12px;
}
.checklist-item h4 {
    color: var(--green);
    font-size: 0.95rem;
    margin-bottom: 6px;
}
.checklist-item h4::before { content: "\2713 "; }
.checklist-item p { font-size: 0.85rem; color: var(--text-light); margin-bottom: 6px; }
.checklist-item a {
    font-size: 0.8rem;
    color: var(--accent);
    text-decoration: none;
}
.checklist-item a:hover { text-decoration: underline; }
.checklist-item .deadline { font-size: 0.8rem; color: #b45309; font-weight: 600; }
.cta-box {
    background: linear-gradient(135deg, #eff6ff, #dbeafe);
    border: 1px solid #93c5fd;
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
    margin: 20px 0;
}
.cta-box p { margin-bottom: 12px; color: var(--primary); }
#resultSummary { color: var(--text-light); font-size: 0.9rem; margin-bottom: 16px; }
.disclaimer {
    margin-top: 20px;
    padding: 12px 16px;
    background: #fff7ed;
    border: 1px solid #fed7aa;
    border-radius: 8px;
    font-size: 0.75rem;
    color: #92400e;
}
footer { margin-top: 16px; }
@media (max-width: 480px) {
    body { padding: 12px 10px; }
    main { padding: 20px 16px; }
    h1 { font-size: 1.3rem; }
    .option-btn { padding: 12px 14px; }
}