@charset "utf-8";

/* ===== 全体背景＆中央表示 ===== */
body {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    padding: 20px;
    background: #dbf2f5;
    font-family: 'Helvetica Neue', Arial, sans-serif;
    color: #4e4e4e;
    font-size: 18px; /* 文章を大きく */
}

/* ===== 見出し ===== */
h1 {
    font-size: 3em;
    color: #4e4e4e;
    text-shadow: 1px 1px 3px rgba(255, 255, 255, 0.7);
    text-align: left; /* 見出しも左寄せ */
}
h2 {
    font-size: 2.5em;
    color: #4e4e4e;
    text-shadow: 1px 1px 3px rgba(255, 255, 255, 0.7);
    text-align: left;
}
h3 {
    font-size: 2em;
    color: #4e4e4e;
    text-shadow: 1px 1px 3px rgba(255, 255, 255, 0.7);
    text-align: left;
}

/* ===== リンク ===== */
a {
    color: #b77af9;
    text-decoration: none;
    transition: 0.3s;
}

a:hover {
    color: #81d4fa;
    text-shadow: 0 0 5px #81d4fa;
}

/* ===== ボタン風リンク ===== */
.button {
    display: inline-block;
    background: #81d4fa;
    color: #034f84;
    padding: 12px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    transition: 0.3s;
    cursor: pointer;
}

.button:hover {
    background: #4fc3f7;
    box-shadow: 0 6px 14px rgba(0,0,0,0.2);
}

/* ===== カードやパネル ===== */
.card {
    background: rgba(255, 255, 255, 0.6);
    border-radius: 16px;
    padding: 50px 40px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.1);
    backdrop-filter: blur(8px);
    max-width: 700px;
    text-align: left; /* ←左寄せに変更 */
    font-size: 18px;
}

/* ===== 箇条書き・番号調整 ===== */
.card ol {
    counter-reset: item;
    list-style: none;
    padding-left: 35px;
    margin: 10px 0;
}

.card ol li {
    counter-increment: item;
    position: relative;
    padding-left: 35px;
    margin: 6px 0;
}

.card ol li::before {
    content: counter(item) ".";
    position: absolute;
    left: 0;
    color: #0277bd;
    font-weight: bold;
}

.card ul {
    padding-left: 25px;
    margin: 10px 0;
}

.card li {
    margin: 6px 0;
}

/* ===== スクロールバー ===== */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: #d0f4f7;
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: #81d4fa;
    border-radius: 10px;
    box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
}

::-webkit-scrollbar-thumb:hover {
    background: #4fc3f7;
}