/* =================================================================
   基本設定 & 変数
   ================================================================= */
:root {
    --primary-color: #007BFF;
    --secondary-color: #17a2b8;
    --dark-color: #343a40;
    --light-color: #f8f9fa;
    --white-color: #ffffff;
    --font-family: 'Noto Sans JP', sans-serif;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.8;
    color: var(--dark-color);
    margin: 0;
    background-color: var(--white-color);
}

h1,
h2,
h3,
h4 {
    font-weight: 700;
    line-height: 1.4;
}

budoux-ja {
    display: inline;
}

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

section {
    padding: 60px 20px;
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

strong {
    color: var(--primary-color);
}

/* =================================================================
   ヒーローセクション
   ================================================================= */
.hero {
    background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('img/Gemini_Generated_Image_e4f6ane4f6ane4f6.png');
    background-size: cover;
    background-position: center;
    color: var(--white-color);
    padding: 100px 20px;
    text-align: center;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-height: 80vh;
}

/* WebP対応ブラウザ用の背景画像 */
@supports (background-image: url("data:image/webp;base64,UklGRhoAAABXRUJQVlA4TA0AAAAvAAAAEAcQERGIiP4HAA==")) {
    .hero {
        background-image: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.5)), url('img/Gemini_Generated_Image_e4f6ane4f6ane4f6.webp');
    }
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 2.5rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 40px;
}

/* =================================================================
   CTAボタン
   ================================================================= */
.cta-button {
    background-color: var(--primary-color);
    color: var(--white-color);
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    display: inline-block;
    transition: background-color .3s, transform .3s;
    box-shadow: 0 4px 15px rgba(0, 123, 255, .4);
}

.cta-button:hover {
    background-color: #0056b3;
    transform: translateY(-3px);
}

.cta-button-large {
    padding: 20px 40px;
    font-size: 1.3rem;
}

/* =================================================================
   セクション共通スタイル
   ================================================================= */
.section-title {
    font-size: 2.2rem;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
    padding-bottom: 10px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
}

.subsection-title {
    font-size: 1.8rem;
    color: var(--dark-color);
    margin-top: 30px;
    margin-bottom: 30px;
}

.section-image {
    margin: 30px auto;
    border-radius: 10px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, .1);
}

/* =================================================================
   各セクションのスタイル
   ================================================================= */
.empathy {
    background-color: var(--light-color);
}

.empathy-message {
    margin-top: 30px;
    font-size: 1.1rem;
}

.about p {
    text-align: left;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 1em;
}

.interview {
    background-color: var(--light-color);
}

.interview-container {
    display: flex;
    align-items: center;
    gap: 40px;
    text-align: left;
}

.interview-container>picture {
    flex-basis: 33%;
    flex-shrink: 0;
}

.interview-image {
    width: 100%;
    border-radius: 50%;
    aspect-ratio: 1 / 1;
    object-fit: cover;
}

.interview-content {
    flex-basis: 67%;
}

.interview-item {
    margin-bottom: 20px;
}

.interview-item h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.seminar .merit-list {
    list-style: none;
    padding: 0;
    max-width: 600px;
    margin: 30px auto;
    text-align: left;
}

.seminar .merit-list li {
    background-color: var(--light-color);
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 8px;
    border-left: 5px solid var(--secondary-color);
}

.speakers {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-top: 40px;
}

.speaker-card {
    background-color: var(--white-color);
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, .08);
    width: 45%;
    text-align: center;
}

.speaker-card img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    margin: 0 auto 15px;
    object-fit: cover;
}

.speaker-card h4 {
    margin-bottom: 10px;
    color: var(--dark-color);
}

.speaker-card p {
    font-size: .9rem;
    text-align: left;
}

.details {
    background-color: var(--light-color);
}

.details-list {
    max-width: 600px;
    margin: 0 auto;
    text-align: left;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
}

.details-list dt,
.details-list dd {
    padding: 15px 20px;
}

.details-list dt {
    background-color: #e9ecef;
    font-weight: 700;
    border-bottom: 1px solid #ddd;
}

.details-list dd {
    margin: 0;
    background-color: var(--white-color);
    border-bottom: 1px solid #ddd;
}

.details-list dd:last-child {
    border-bottom: none;
}

.details-list ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.closing-message {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.closing-lead {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 30px;
}

.company-profile {
    background-color: var(--light-color);
}

.form-container {
    margin-top: 40px;
    border: 1px solid #ddd;
    border-radius: 8px;
}

/* =================================================================
   フッター
   ================================================================= */
.footer {
    background-color: var(--dark-color);
    color: var(--white-color);
    text-align: center;
    padding: 20px;
    font-size: .9rem;
}

.footer-link {
    font-size: 1.1em;
    color: var(--light-color);
    text-decoration: underline;
    display: inline-block;
    margin: .5em 0;
}

.footer-link:hover {
    color: var(--white-color);
}


/* =================================================================
   フローティングCTAボタン
   ================================================================= */
#floating-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    /* 常時表示 */
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
}




/* =================================================================
   レスポンシブ対応
   ================================================================= */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .interview-container {
        flex-direction: column;
    }

    .interview-image {
        width: 250px;
    }

    .speakers {
        flex-direction: column;
        align-items: center;
    }

    .speaker-card {
        width: 80%;
    }

    #floating-cta {
        padding: 12px 24px;
        font-size: 1rem;
    }
}