/* ============================
   About ページ専用スタイル
   ============================ */

/* このCSSは about ページだけで読み込まれる前提なので、
   body の背景もここで変えてしまいます。 */
body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background:
        radial-gradient(circle at 0% 0%, #60a5fa 0, transparent 50%),
        radial-gradient(circle at 100% 0%, #38bdf8 0, transparent 45%),
        linear-gradient(180deg, #020617 0%, #020617 40%, #020617 100%);
    color: #0f172a;
}

/* 全体カード（中身は白ベース） */
.about-wrapper {
    max-width: 1040px;
    margin: 96px auto 96px;
    padding: 32px 28px 40px;
    box-sizing: border-box;
    background: rgba(255, 255, 255, 0.98);
    border-radius: 24px;
    box-shadow:
        0 18px 45px rgba(15, 23, 42, 0.35),
        0 0 0 1px rgba(148, 163, 184, 0.2);
}

/* 上部のアイコン＋タイトルエリア */
.about-header-block {
    display: flex;
    gap: 28px;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.45);
    flex-wrap: wrap;
}

.about-avatar img {
    width: 140px;
    height: 140px;
    border-radius: 999px;
    object-fit: cover;
    background: #e5f0ff;
    box-shadow:
        0 12px 30px rgba(15, 23, 42, 0.35),
        0 0 0 3px rgba(59, 130, 246, 0.25);
}

/* タイトル・リード文 */
.about-intro-text h1 {
    margin: 0 0 8px;
    font-size: clamp(2.0rem, 3vw, 2.6rem);
    letter-spacing: 0.03em;
    color: #0f172a;
}

.about-lead {
    margin: 0 0 16px;
    line-height: 1.7;
    color: #4b5563;
    max-width: 520px;
}

/* 関連リンク用ボックス */
.about-links {
    display: inline-block;
    background: linear-gradient(135deg, #eff6ff, #e0f2fe);
    border-radius: 999px;
    padding: 8px 16px;
    border: 1px solid rgba(59, 130, 246, 0.35);
}

.about-links-title {
    display: inline-block;
    margin: 0 10px 0 0;
    font-weight: 600;
    font-size: 0.85rem;
    color: #1d4ed8;
}

.about-links ul {
    display: inline-flex;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.about-links a {
    text-decoration: none;
    font-size: 0.88rem;
    color: #1d4ed8;
}

.about-links a::before {
    content: "↗";
    font-size: 0.8rem;
    margin-right: 4px;
}

.about-links a:hover {
    text-decoration: underline;
}

/* 本文エリア */
.about-content {
    margin-top: 8px;
}

/* 見出し2（セクション） */
.about-content h2 {
    margin-top: 28px;
    margin-bottom: 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: #0f172a;
    position: relative;
    padding-left: 14px;
}

.about-content h2::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 6px;
    height: 60%;
    transform: translateY(-50%);
    border-radius: 999px;
    background: linear-gradient(180deg, #2563eb, #38bdf8);
}

/* 見出し3（小見出し） */
.about-content h3 {
    margin-top: 18px;
    margin-bottom: 6px;
    font-size: 1.05rem;
    font-weight: 600;
    color: #1f2933;
}

/* テキスト・リスト */
.about-content p {
    line-height: 1.9;
    margin-bottom: 10px;
    color: #4b5563;
}

.about-content p strong {
    color: #1d4ed8;
    font-weight: 700;
}

.about-content ul {
    padding-left: 1.2rem;
    margin-bottom: 10px;
}

.about-content li {
    margin-bottom: 4px;
    line-height: 1.8;
    color: #4b5563;
}

/* リンク */
.about-content a {
    color: #2563eb;
    text-decoration: none;
}

.about-content a:hover {
    text-decoration: underline;
}

/* スマホ対応 */
@media (max-width: 768px) {

    .about-wrapper {
        margin: 80px 12px 72px;
        padding: 24px 18px 32px;
        border-radius: 20px;
    }

    .about-header-block {
        flex-direction: column;
        align-items: flex-start;
    }

    .about-avatar img {
        width: 120px;
        height: 120px;
    }

    .about-intro-text h1 {
        font-size: 1.9rem;
    }

    .about-lead {
        max-width: 100%;
    }

    .about-links {
        border-radius: 16px;
        display: block;
        padding: 10px 12px;
    }

    .about-links ul {
        display: block;
    }

    .about-links li + li {
        margin-top: 4px;
    }
}
/* ============================
   CTA（重要リンク）ボタン
   ============================ */

.about-cta-buttons {
    display: flex;
    gap: 18px;
    margin: 32px 0 16px;
    flex-wrap: wrap;
}

.about-cta-buttons a {
    display: inline-block;
    padding: 14px 26px;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    text-decoration: none;
    color: white;

    background: linear-gradient(135deg, #3b82f6, #06b6d4);
    box-shadow:
        0 6px 16px rgba(14, 165, 233, 0.35),
        inset 0 0 0 0 rgba(255, 255, 255, 0.2);

    transition: all 0.25s ease;
    backdrop-filter: blur(10px);
}

.about-cta-buttons a:hover {
    transform: translateY(-3px);
    box-shadow:
        0 10px 24px rgba(14, 165, 233, 0.45),
        inset 0 0 0 0 rgba(255, 255, 255, 0.4);
}

/* スマホ対応 */
@media(max-width: 600px) {
    .about-cta-buttons a {
        width: 100%;
        text-align: center;
    }
}