* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: "Noto Sans JP", sans-serif;
    background: #f3f4f6;
    color: #383838;
    line-height: 1.8;
    font-size: 16px;
}
.article {
    max-width: 720px;
    margin: 0 auto;
    background: #fff;
    box-shadow: 0 0 20px rgba(0,0,0,0.08);
}
.bottom-cta {
    margin-top: 32px;
    padding: 20px;
    background: #F98033;
    border-radius: 10px;
    text-align: center;
}
.bottom-cta a {
    color: #fff;
    text-decoration: none;
    font-size: 15px;
    font-weight: 700;
}
.site-nav {
    background: #fff;
    padding: 12px 20px;
    border-bottom: 3px double #383838;
}
.site-nav a {
    color: #383838;
    text-decoration: none;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
}
.article-header {
    background: #1980E5;
    color: #fff;
    padding: 40px 24px 32px;
}
.article-header h1 {
    font-size: 22px;
    font-weight: 900;
    line-height: 1.4;
    margin-bottom: 12px;
}
.article-meta {
    font-size: 13px;
    opacity: 0.8;
}
.article-body {
    padding: 32px 24px 48px;
}
.article-body p {
    margin-bottom: 20px;
    text-align: left;
}
.article-body h2 {
    font-size: 20px;
    font-weight: 900;
    color: #1980E5;
    border-left: 4px solid #1980E5;
    padding-left: 12px;
    margin: 40px 0 16px;
    line-height: 1.4;
}
.article-body h3 {
    font-size: 17px;
    font-weight: 700;
    margin: 28px 0 12px;
    line-height: 1.4;
}
.step-list {
    list-style: none;
    counter-reset: step;
    margin: 24px 0;
}
.step-list li {
    counter-increment: step;
    position: relative;
    padding: 20px 16px 20px 60px;
    margin-bottom: 12px;
    background: #f8fafc;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
    text-align: left;
}
.step-list li::before {
    content: counter(step);
    position: absolute;
    left: 16px;
    top: 18px;
    width: 32px;
    height: 32px;
    background: #1980E5;
    color: #fff;
    border-radius: 50%;
    font-size: 15px;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
}
.step-list li strong {
    display: block;
    font-size: 16px;
    margin-bottom: 4px;
}
.step-list li span {
    font-size: 14px;
    color: #555;
}
.point-box {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    border-radius: 10px;
    padding: 20px;
    margin: 24px 0;
    text-align: left;
}
.point-box-title {
    font-size: 15px;
    font-weight: 900;
    color: #1980E5;
    margin-bottom: 8px;
}
.point-box p {
    font-size: 14px;
    margin-bottom: 0;
}
.warn-box {
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 10px;
    padding: 20px;
    margin: 24px 0;
    text-align: left;
}
.warn-box-title {
    font-size: 15px;
    font-weight: 900;
    color: #dc2626;
    margin-bottom: 8px;
}
.warn-box p {
    font-size: 14px;
    margin-bottom: 0;
}
.info-table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    font-size: 14px;
}
.info-table th, .info-table td {
    border: 1px solid #e5e7eb;
    padding: 12px;
    text-align: left;
}
.info-table th {
    background: #f1f5f9;
    font-weight: 700;
    white-space: nowrap;
}
.disclaimer {
    margin-top: 32px;
    padding: 16px;
    background: #f8fafc;
    border: 1px dashed #cbd5e1;
    border-radius: 8px;
    font-size: 12px;
    color: #64748b;
    line-height: 1.7;
}
footer {
    text-align: center;
    padding: 20px 20px;
    font-size: 10px;
    line-height: 2;
    background: #333;
    color: #ccc;
}
footer a {
    color: #fff;
    text-decoration: underline;
    margin: 0 8px;
}
.footer-copyright {
    display: block;
    margin-top: 8px;
}

/* Emphasis utilities */
.em-lg { color: #F98033; font-weight: 700; }
.em-md { color: #383838; font-weight: 700; background: linear-gradient(transparent 60%, #FFE160 60%); padding: 0 2px; }
.em-sm { color: #383838; font-weight: 700; }