@charset "UTF-8";

/* ========== Reset & Base ========== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Hiragino Kaku Gothic Pro', 'ヒラギノ角ゴ Pro W3', 'メイリオ', Meiryo, 'ＭＳ Ｐゴシック', sans-serif;
    color: #333;
    line-height: 1.8;
    background-color: #fff;
}

a {
    color: #0eb89e;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
    opacity: 0.85;
}

img {
    max-width: 100%;
    height: auto;
}

/* ========== Layout ========== */
.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ========== Header ========== */
.header {
    background-color: #0eb89e;
    color: #fff;
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.header-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.header-title {
    font-size: 18px;
    font-weight: bold;
    letter-spacing: 1px;
    margin: 0;
}

/* ========== Notice Section ========== */
.notice {
    background-color: #fff8f0;
    border-bottom: 3px solid #e8a735;
    padding: 48px 0;
}

.notice-badge {
    display: inline-block;
    background-color: #d9534f;
    color: #fff;
    font-size: 13px;
    font-weight: bold;
    padding: 4px 16px;
    border-radius: 4px;
    margin-bottom: 16px;
    letter-spacing: 1px;
}

.notice-title {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.4;
}

.notice-body p {
    font-size: 16px;
    margin-bottom: 12px;
    letter-spacing: 0.5px;
}

.notice-body strong {
    color: #d9534f;
}

/* ========== Section Common ========== */
.section-title {
    font-size: 22px;
    font-weight: bold;
    color: #0eb89e;
    border-bottom: 2px solid #0eb89e;
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.section-lead {
    font-size: 15px;
    color: #555;
    margin-bottom: 32px;
}

/* ========== How-to Steps ========== */
.howto {
    padding: 56px 0;
    background-color: #fff;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.step {
    display: flex;
    gap: 20px;
    background-color: #f8fafa;
    border-radius: 8px;
    padding: 24px;
    border-left: 4px solid #0eb89e;
}

.step-number {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background-color: #0eb89e;
    color: #fff;
    font-size: 20px;
    font-weight: bold;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-content h3 {
    font-size: 17px;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}

.step-content p {
    font-size: 15px;
    color: #555;
    margin-bottom: 4px;
}

.step-note {
    font-size: 13px !important;
    color: #888 !important;
    margin-top: 4px;
}

/* ========== Existing Data ========== */
.existing-data {
    padding: 56px 0;
    background-color: #f5f9f8;
}

.data-info {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.data-info-item {
    background-color: #fff;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.data-info-item h3 {
    font-size: 16px;
    font-weight: bold;
    color: #0eb89e;
    margin-bottom: 8px;
}

.data-info-item p {
    font-size: 15px;
    color: #555;
}

/* ========== FAQ ========== */
.faq {
    padding: 56px 0;
    background-color: #fff;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.faq-item {
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
}

.faq-item summary {
    padding: 16px 20px;
    font-size: 15px;
    font-weight: bold;
    color: #333;
    cursor: pointer;
    background-color: #fafafa;
    list-style: none;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::before {
    content: "Q. ";
    color: #0eb89e;
    font-weight: bold;
}

.faq-item[open] summary {
    border-bottom: 1px solid #ddd;
}

.faq-item p {
    padding: 16px 20px;
    font-size: 15px;
    color: #555;
    line-height: 1.8;
}

/* ========== Footer ========== */
.footer {
    background-color: #f0f0f0;
    padding: 40px 0 24px;
    margin-top: 0;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 24px;
}

.footer-info {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-logo span {
    font-size: 14px;
    color: #555;
}

.footer-label {
    font-weight: bold;
    font-size: 14px;
    color: #333;
    margin-bottom: 4px;
}

.footer-contact p {
    font-size: 13px;
    color: #666;
    margin-bottom: 4px;
}

.footer-address {
    font-size: 12px !important;
}

.footer-contact a {
    font-weight: bold;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
}

.footer-links a {
    font-size: 14px;
    color: #0eb89e;
    font-weight: bold;
}

.footer-copy {
    text-align: center;
    font-size: 12px;
    color: #999;
    border-top: 1px solid #ddd;
    padding-top: 16px;
}

/* ========== Responsive ========== */
@media screen and (min-width: 768px) {
    .header-title {
        font-size: 22px;
    }

    .notice-title {
        font-size: 28px;
    }

    .notice-body p {
        font-size: 17px;
    }

    .section-title {
        font-size: 26px;
    }

    .data-info {
        grid-template-columns: repeat(3, 1fr);
    }

    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
        align-items: flex-start;
    }

    .footer-info {
        flex-direction: row;
        text-align: left;
    }

    .footer-links {
        flex-direction: column;
        align-items: flex-end;
    }
}