body {
    margin: 0;
    font-family: "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
    background-color: #fff5f7; 
    background-image: repeating-linear-gradient(45deg, #f7d8e2 0, #f7d8e2 10px, #fff5f7 10px, #fff5f7 20px);
    color: #333;
    font-size: 16px; 
}

header {
    min-height: 400px;
    padding: 60px 20px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 30px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, rgba(255, 111, 145, 0.9) 0%, rgba(255, 79, 122, 0.8) 100%), url('images/sample1.png');
    background-size: cover;
    background-position: center;
    color: white;
}

.header-text {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 40px 60px;
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    text-align: center;
    z-index: 2;
}

header h1 {
    margin: 0;
    font-size: 4rem;
    letter-spacing: 0.15em;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.2);
    font-weight: 900;
}

header p {
    margin-top: 15px;
    font-size: 1.4rem;
    opacity: 0.9;
}

.header-icon {
    width: 180px;
    height: 180px;
    background-size: cover;
    background-position: center;
    border-radius: 50%;
    border: 4px solid rgba(255, 255, 255, 0.8);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.4), 0 10px 20px rgba(0,0,0,0.2);
    z-index: 2;
    transition: transform 0.3s ease;
}

.header-icon:hover {
    transform: scale(1.05) rotate(5deg);
}

header::before {
    content: "";
    position: absolute;
    top: -50px;
    left: -50px;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    z-index: 1;
}

nav {
    background-color: #ff4f7a;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-links {
    display: flex;
    justify-content: center;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
    list-style: none;
}

.nav-links li a {
    display: block;
    padding: 15px 30px;
    color: white;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.2s;
    font-size: 1rem;
}

.nav-links li a:hover {
    background-color: #e03c62;
}

main {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

section {
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: 40px; 
}

section h2 {
    margin-top: 0;
    color: #ff4f7a;
    font-size: 1.8rem;
    text-align: center;
}

section p {
    line-height: 1.8;
}

.text-center { text-align: center; }

.gallery-wrapper {
    overflow: hidden;
    width: 100%;
    margin-top: 20px;
}

.gallery-track {
    display: flex;
    gap: 20px;
    width: max-content;
    animation: scrollGallery 30s linear infinite; 
}

.gallery-track img {
    width: 300px;
    height: 440px;
    object-fit: cover;
    border-radius: 12px;
    flex-shrink: 0;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

@keyframes scrollGallery {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.dlsite-item {
    display: flex;
    justify-content: space-between; 
    align-items: center; 
    gap: 20px;
    padding: 15px 0;
}

.dlsite-thumbnail {
    width: 100px;
    height: 100px; 
    flex-shrink: 0; 
    border-radius: 8px;
    background-size: cover; 
    background-position: center; 
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    border: 3px solid #f7d8e2;
}

.dlsite-description {
    flex-grow: 1; 
    max-width: calc(100% - 120px - 150px);
}

.dlsite-description h3 {
    color: #ff4f7a;
    font-size: 1.2rem;
    margin: 0 0 5px 0;
}

.dlsite-description p { font-size: 1rem; line-height: 1.5; margin: 0; }

.link-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 20px;
    justify-content: center;
}

.link-btn {
    padding: 12px 24px;
    background-color: #ff6f91;
    color: #fff;
    text-decoration: none;
    border-radius: 999px;
    font-weight: bold;
    transition: 0.2s ease;
}

.link-btn:hover {
    background-color: #ff4f7a;
    transform: translateY(-2px);
}

.commission-form-group { margin-bottom: 20px; }
.commission-form-group label { display: block; font-weight: bold; margin-bottom: 5px; color: #ff4f7a; }
.commission-form-group textarea, .quote-calculator select {
    width: 100%;
    padding: 10px;
    border: 1px solid #ff99b3;
    border-radius: 8px;
    box-sizing: border-box;
    font-size: 1rem;
    background-color: white;
}
.commission-form-group textarea { resize: vertical; min-height: 150px; }

.commission-submit-btn {
    width: 100%;
    padding: 15px;
    background-color: #ff6f91;
    color: white;
    border: none;
    border-radius: 999px;
    font-weight: bold;
    cursor: pointer;
    transition: 0.2s ease;
}

.commission-submit-btn:hover { background-color: #ff4f7a; transform: translateY(-2px); }

footer { text-align: center; padding: 20px; font-size: 0.9rem; color: #777; }

.illustration-grid {
    display: grid;
    grid-template-columns: 1fr 1fr; 
    gap: 30px;
    margin-top: 20px;
}

.illustration-grid img {
    width: 100%; 
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.music-item h3 { color: #ff4f7a; margin: 0 0 5px 0; }
.music-item p { color: #555; margin-bottom: 15px; }
.music-item audio { width: 100%; max-width: 600px; display: block; margin-top: 10px; }

hr { border: 0; height: 1px; background-color: #f7d8e2; margin: 25px 0; }

.toggle-options { display: flex; flex-wrap: wrap; gap: 10px; }
.toggle-options label {
    flex-grow: 1;
    text-align: center;
    cursor: pointer;
    background-color: #fce4ec;
    color: #ff4f7a;
    padding: 10px 15px;
    border-radius: 999px;
    transition: 0.2s;
    font-weight: bold;
    border: 2px solid #fce4ec;
}
.toggle-options input[type="radio"] { display: none; }
.toggle-options input[type="radio"]:checked + span {
    background-color: #ff6f91;
    color: white;
    border-color: #e03c62;
}

/* 依頼方法の左右分割レイアウト */
.method-container {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

.method-box {
    flex: 1;
    padding: 25px;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 16px;
    border: 2px solid #f7d8e2;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.method-box h3 {
    color: #ff4f7a;
    font-size: 1.3rem;
    margin-top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.skeb-logo-inline {
    height: 24px;
    border-radius: 4px;
}

.skeb-warning {
    background: #fff0f3;
    padding: 10px;
    border-radius: 8px;
    font-size: 0.9rem;
    color: #d63384;
}

.skeb-btn {
    display: block;
    width: 100%;
    padding: 15px;
    background-color: #222; /* Skebブランドカラー */
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 999px;
    font-weight: bold;
    transition: 0.2s;
}

.skeb-btn:hover {
    background-color: #444;
    transform: translateY(-2px);
}

.skeb-guide-link {
    display: block;
    text-align: center;
    margin-top: 15px;
    font-size: 0.85rem;
    color: #777;
    text-decoration: underline;
}

/* レスポンシブ：スマホでは縦並びにする */
@media (max-width: 600px) {
    .method-container {
        flex-direction: column;
    }
}

.quote-result { text-align: center; padding: 20px; border-top: 2px dashed #f7d8e2; margin-top: 20px; }
.quote-result h3 { color: #ff6f91; font-size: 1.5rem; }
.price-display { font-size: 3rem; font-weight: bold; color: #333; transition: 0.5s ease; }
.price-ready { color: #e03c62; text-shadow: 1px 1px 3px rgba(255, 79, 122, 0.3); }

@media (max-width: 600px) {
    body { font-size: 14px; }
    header { min-height: 300px; padding: 30px 10px; }
    .header-text { padding: 20px 30px; width: 80%; }
    header h1 { font-size: 2.2rem; }
    header p { font-size: 0.9rem; }
    .header-icon { width: 120px; height: 120px; }
    .nav-links li a { padding: 10px 15px; font-size: 0.9rem; }
    main { margin: 20px auto; padding: 0 10px; }
    .illustration-grid { grid-template-columns: 1fr; }
    @keyframes scrollGallery {
        0% { transform: translateX(0); }
        100% { transform: translateX(-880px); }
    }
}