:root {
    --bg-color: #121212;
    --surface-color: #1e1e1e;
    --primary-color: #4CAF50;
    --primary-hover: #66BB6A;
    --text-color: #e0e0e0;
    --heading-color: #ffffff;
    --border-color: #333333;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    line-height: 1.7;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--heading-color);
    text-align: center;
    margin-bottom: 20px;
}

.section-description {
    font-size: 1.1rem;
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
    color: #b0b0b0;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    transition: all 0.3s ease;
}

.btn:hover {
    background-color: var(--primary-color);
    color: var(--heading-color);
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--heading-color);
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.1rem;
}

/* Header */
header {
    background-color: rgba(18, 18, 18, 0.8);
    backdrop-filter: blur(10px);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--heading-color);
}

/* --- Header Logo Image Style 0701--- */
.logo-link {
    display: inline-block;
}

.logo-image {
    height: 40px; /* ロゴの高さを指定 */
    width: auto;   /* 幅は自動で調整 */
    vertical-align: middle; /* ボタンとの垂直方向の位置を揃える */
}

/* Hero Section */
.hero {
    height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
}

.hero-content {
    animation: fadeIn 1s ease-in-out;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin: 0;
    color: #fff;
    text-shadow: 2px 2px 10px rgba(0,0,0,0.7);
}

.hero-subtitle {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin: 10px 0;
    text-shadow: 1px 1px 5px rgba(0,0,0,0.5);
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 40px;
    color: #f0f0f0;
    text-shadow: 1px 1px 5px rgba(0,0,0,0.5);
}

/* Problem Section */
.problem-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 40px;
}

.problem-item {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 10px;
    border-left: 5px solid var(--primary-color);
    font-size: 1.1rem;
    font-weight: 700;
}

/* Strength Section */
.strength-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.strength-card {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
}

.strength-card h3 {
    color: var(--primary-color);
    margin-top: 0;
}

/* Principles Section */
.principles {
    background-color: var(--surface-color);
}

.principles-hero-image {
    display: block;
    max-width: 100%;
    max-height: 500px;
    width: auto;
    height: auto;
    margin: 0 auto 50px auto;
    border-radius: 15px;
    object-fit: contain;
}

.principles-list {
    display: grid;
    gap: 25px;
    margin-bottom: 60px;
}

.principle-item {
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 10px;
    border-left: 5px solid var(--primary-color);
}

.principle-item h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 0;
    margin-bottom: 15px;
}

.principle-item p {
    margin: 10px 0;
    line-height: 1.8;
}

.principles-examples-title {
    font-size: 2rem;
    font-weight: 900;
    color: var(--heading-color);
    text-align: center;
    margin: 60px 0 40px 0;
    border-top: 2px solid var(--border-color);
    padding-top: 60px;
}

.principles-examples {
    display: grid;
    gap: 40px;
}

.example-item {
    background-color: var(--bg-color);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.example-item h4 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-top: 0;
    margin-bottom: 20px;
}

.example-before,
.example-after {
    margin: 20px 0;
    padding: 20px;
    border-radius: 8px;
}

.example-before {
    background-color: rgba(244, 67, 54, 0.1);
    border-left: 3px solid #f44336;
}

.example-after {
    background-color: rgba(76, 175, 80, 0.1);
    border-left: 3px solid var(--primary-color);
}

.example-before strong,
.example-after strong {
    display: block;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.example-before ul,
.example-after ul {
    margin: 10px 0 0 0;
    padding-left: 20px;
}

.example-before li,
.example-after li {
    margin: 8px 0;
    line-height: 1.7;
}

/* Outputs Section */
.output-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.output-card {
    background-color: var(--surface-color);
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.output-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}
.output-card:hover img {
    transform: scale(1.05);
}

.output-card .card-content {
    padding: 25px;
    flex-grow: 1;
}

.output-card h3 {
    margin-top: 0;
    color: var(--heading-color);
}

.output-card p:last-child {
    margin-bottom: 0;
}

/* Vibe Section */
.solution-vibe {
    background-color: var(--surface-color);
}

/* Voices Section */
.voice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}
.voice-card {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 10px;
}
.voice-card blockquote {
    margin: 0;
    font-size: 1.1rem;
    font-style: italic;
    border-left: 3px solid var(--primary-color);
    padding-left: 20px;
}
.voice-card cite {
    display: block;
    margin-top: 20px;
    font-weight: 700;
    text-align: right;
    color: var(--primary-color);
}

/* Feedback Section */
.feedback-container {
    display: flex;
    gap: 30px;
    justify-content: center;
    margin-top: 40px;
}
.feedback-box {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 10px;
    width: 45%;
}
.feedback-box h4 {
    margin-top: 0;
    color: var(--heading-color);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}
.feedback-box ul {
    list-style: none;
    padding: 0;
}
.feedback-box li {
    margin-bottom: 10px;
}
.feedback-box li strong {
    color: var(--primary-color);
}

.feedback-conclusion {
    text-align: center;
    margin-top: 40px;
    font-weight: 700;
    font-size: 1.2rem;
}

/* Requirements Section */
.req-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    text-align: center;
    margin-bottom: 80px;
}
.req-item {
    background-color: var(--surface-color);
    padding: 30px;
    border-radius: 10px;
}
.req-item h3 {
    color: var(--primary-color);
}
.cta-area {
    text-align: center;
}
.cta-title {
    font-size: 2rem;
    margin-bottom: 30px;
}
.cta-note {
    margin-top: 20px;
    font-size: 0.9rem;
    color: #aaa;
}

/* FAQ & Related Links */
.faq-grid {
    max-width: 800px;
    margin: 0 auto;
}
.faq-item {
    background-color: var(--surface-color);
    padding: 20px;
    border-radius: 5px;
    margin-bottom: 20px;
}
.faq-item h3 {
    margin-top: 0;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.related-links .link-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}
.related-links .link-card {
    display: inline-block;
    background-color: var(--bg-color);
    color: var(--text-color);
    padding: 20px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 700;
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}
.related-links .link-card:hover {
    background-color: var(--primary-color);
    color: var(--heading-color);
    border-color: var(--primary-color);
}


/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    border-top: 1px solid var(--border-color);
    color: #888;
}

/* --- Gimmicks CSS --- */
/* Fade-in Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}
.fade-in.appear {
    opacity: 1;
    transform: translateY(0);
}

/* Quiz Modal */
.quiz-trigger {
    cursor: pointer;
}
.quiz-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.quiz-modal-content {
    background-color: var(--surface-color);
    padding: 40px;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    position: relative;
    text-align: center;
}

.quiz-close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 2rem;
    color: #aaa;
    cursor: pointer;
    transition: color 0.2s;
}
.quiz-close-btn:hover {
    color: var(--heading-color);
}

.quiz-question {
    font-size: 1.2rem;
    font-weight: 700;
    margin: 20px 0;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}

.quiz-option {
    width: 100%;
    padding: 15px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    color: var(--text-color);
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.quiz-option:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.quiz-option:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.quiz-result {
    margin-top: 30px;
    font-weight: bold;
    min-height: 1.5em;
}

/* Custom Cursor */
.custom-cursor {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--primary-color);
    position: fixed;
    top: 0;
    left: 0;
    pointer-events: none;
    z-index: 9999;
    mix-blend-mode: difference;
    transition: transform 0.1s linear, width 0.3s ease, height 0.3s ease, background-color 0.3s ease;
}

.custom-cursor.hover {
    width: 50px;
    height: 50px;
    background-color: rgba(255, 255, 255, 0.5);
}

.custom-cursor.active {
    transform: scale(0.8);
}


/* --- Audio Voices Section --- */
.voices-audio {
    background-color: var(--surface-color);
}

.audio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.audio-card {
    background-color: var(--bg-color);
    padding: 25px;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
}

.audio-card h3 {
    color: var(--primary-color);
    margin-top: 0;
    font-size: 1.2rem;
}

.audio-card p {
    font-size: 0.9rem;
    color: #b0b0b0;
    min-height: 3.5em; /* カードの高さを揃えるための微調整 */
    margin-bottom: 20px;
}

/* stand.fm embed style */
.standfm-embed-iframe {
    height: 190px;
    border-radius: 12px; /* LPのデザインに合わせる */
    border: none;
    flex-grow: 1;
}

@media only screen and (max-device-width: 480px) {
    .standfm-embed-iframe {
        height: 230px;
    }
}

/* Responsive */
@media (max-width: 1024px) {
    .custom-cursor {
        display: none;
    }
}

@media (max-width: 768px) {
    .section-title { font-size: 2rem; }
    .hero-title { font-size: 2.8rem; }
    .hero-subtitle { font-size: 1.8rem; }
    .hero-description { font-size: 1rem; }
    .feedback-container { flex-direction: column; }
    .feedback-box { width: 100%; }
    .voice-grid { grid-template-columns: 1fr; }
    .problem-list { grid-template-columns: 1fr; }
    .strength-grid { grid-template-columns: 1fr; }
    .output-grid { grid-template-columns: 1fr; }
    .audio-grid { grid-template-columns: 1fr; }
    .req-grid { grid-template-columns: 1fr; }
    .btn-large { padding: 16px 32px; font-size: 1rem; }
    .cta-title { font-size: 1.5rem; }

    /* スマホ用KV背景画像 */
    .hero {
        background-image: linear-gradient(rgba(18, 18, 18, 0.6), rgba(18, 18, 18, 0.85)), url('https://metagri-labo.com/wp-content/uploads/2026/01/351277dc4679993a9f5b85f8408bedfc-3.png') !important;
        background-position: center top;
    }
}

/* スマホ専用（480px以下） */
@media (max-width: 480px) {
    .section { padding: 50px 0; }
    .section-title { font-size: 1.6rem; }
    .section-description { font-size: 1rem; margin-bottom: 40px; }
    .hero { height: 100vh; }
    .hero-title { font-size: 2rem; }
    .hero-subtitle { font-size: 1.4rem; }
    .hero-description { font-size: 0.95rem; margin-bottom: 30px; }
    .container { padding: 0 15px; }
    .problem-item { padding: 20px; font-size: 1rem; }
    .strength-card { padding: 20px; }
    .principle-item { padding: 20px; }
    .principle-item h3 { font-size: 1.2rem; }
    .example-item { padding: 20px; }
    .example-before, .example-after { padding: 15px; }
    .output-card .card-content { padding: 20px; }
    .voice-card { padding: 20px; }
    .voice-card blockquote { font-size: 1rem; }
    .audio-card { padding: 20px; }
    .feedback-box { padding: 20px; }
    .req-item { padding: 20px; }
    .faq-item { padding: 15px; }
    .faq-item h3 { font-size: 1rem; }
    .cta-title { font-size: 1.3rem; }
    .btn { padding: 14px 24px; font-size: 0.95rem; }
    .btn-large { padding: 16px 28px; font-size: 1rem; }
    header .container { flex-direction: column; gap: 15px; }
    .logo-image { height: 35px; }

    /* 五原則画像 */
    .principles-hero-image {
        max-height: 400px;
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}