/* リセットCSS */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基本設定 */
:root {
    --main-color: #155E3D; /* 深緑（フォレストグリーン） */
    --accent-color: #F1C75B; /* マスタードイエロー */
    --secondary-color: #46B49C; /* ミントグリーン */
    --background-color: #FFFFFF; /* ホワイト */
    --text-color: #333333; /* ダークグレー */
    --light-text: #888888; /* 補助グレー */
    --white: #fff;
    --light-bg: #FAFAFA; /* 淡いグレーホワイト */
    --cream-bg: #F9F2E4; /* クリームがかった薄ベージュ */
    --border-color: #e0e0e0;
    --gradient-bg: linear-gradient(to right, #155E3D, #46B49C);
    --gradient-accent: linear-gradient(135deg, #F1C75B 0%, #46B49C 100%);
    --gradient-card: linear-gradient(135deg, rgba(21, 94, 61, 0.05) 0%, rgba(70, 180, 156, 0.05) 100%);
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* タイポグラフィ */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 700;
    line-height: 1.3;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--main-color);
    font-weight: 700;
}

/* ボタン */
.cta-button {
    border: none;
    padding: 28px 20px;
    font-size: 1.225rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    text-decoration: none;
    font-family: 'M PLUS Rounded 1c', sans-serif;
    width: 430px;
    text-align: center;
    box-sizing: border-box;
}

.cta-button.primary {
    background: var(--main-color);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(21, 94, 61, 0.4);
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.cta-button.primary:hover {
    background: var(--accent-color);
    color: var(--main-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(241, 199, 91, 0.5);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.9);
    color: var(--main-color);
    border: 2px solid var(--accent-color);
}

.cta-button.secondary:hover {
    background: var(--accent-color);
    color: var(--main-color);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.submit-button {
    background: var(--main-color);
    color: var(--white);
    border: none;
    padding: 18px 40px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(21, 94, 61, 0.4);
    width: 100%;
    margin-top: 2rem;
    font-family: 'M PLUS Rounded 1c', sans-serif;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.submit-button:hover {
    background: var(--accent-color);
    color: var(--main-color);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(241, 199, 91, 0.5);
}

/* ヒーローセクション */
.hero {
    background: url('firstview-pc.png?v=20251103') center top / cover no-repeat;
    background-color: var(--light-bg);
    color: var(--white);
    padding: 0;
    text-align: center;
    position: relative;
    overflow: hidden;
    width: 100%;
    height: auto;
}

/* スマホ版の背景画像 */
@media (max-width: 768px) {
    .hero {
        background-image: url('firstview-sp.png?v=20251103');
    }
}

.hero::before {
    content: '';
    display: block;
    padding-top: 56.25%;
}

.hero-content {
    position: absolute;
    z-index: 2;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.hero-catchcopy {
    position: absolute;
    top: 150px;
    left: 8%;
    text-align: left;
}

.catchcopy-main {
    font-size: clamp(2rem, 5vw, 5rem);
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.3;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.indent-line {
    display: inline-block;
    padding-left: 1em;
}

.catchcopy-sub {
    font-size: clamp(1.5rem, 3vw, 2.8rem);
    font-weight: 500;
    color: var(--white);
    margin: 0;
    line-height: 1.4;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    padding-left: 1em; /* 一文字分右にずらす */
}

.hero-icon {
    position: absolute;
    right: 10%; /* 左に移動（0% → 10%） */
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
}

.firstview-icon-img {
    width: 700px; /* 1000px * 0.7 = 700px */
    max-width: 42vw; /* 60vw * 0.7 = 42vw */
    height: auto;
    display: block;
}

.hero-buttons {
    position: absolute;
    bottom: 28%;
    left: 12%;
    display: flex;
    gap: 1.5rem;
    justify-content: flex-start;
    flex-wrap: wrap;
    flex-direction: column;
    align-items: flex-start;
}

/* 固定CTAボタン */
.fixed-cta {
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 1000;
    display: none;
}

.fixed-cta .cta-button {
    box-shadow: 0 8px 25px rgba(21, 94, 61, 0.4);
    animation: pulse 2s infinite;
    padding: 16px 20px;
    font-size: 1rem;
    width: 250px;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

/* 問題提起セクション */
.problem {
    padding: 100px 0;
    background: var(--cream-bg);
    position: relative;
}

.problem::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 49%, var(--accent-color) 49%, var(--accent-color) 51%, transparent 51%);
    background-size: 100px 100px;
    opacity: 0.1;
    pointer-events: none;
}

.problem-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.problem-item {
    background: var(--white);
    padding: 2rem;
    margin-bottom: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--accent-color);
    position: relative;
}

.problem-item p {
    font-size: 1.2rem;
    color: var(--text-color);
    margin: 0;
    font-weight: 500;
}

.problem-item .emphasis {
    font-weight: 700;
    color: var(--main-color);
    background: linear-gradient(transparent 60%, var(--accent-color) 60%);
    padding: 0 2px;
}

/* コンセプトセクション */
.concept {
    padding: 100px 0;
    background: var(--white);
    position: relative;
}

.concept-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.concept-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--main-color);
    font-weight: 700;
}

.concept-intro {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-bottom: 3rem;
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 500;
}

.concept-intro-left {
    text-align: left;
}

.concept-intro .emphasis {
    font-weight: 700;
    color: var(--main-color);
    background: linear-gradient(transparent 60%, var(--accent-color) 60%);
    padding: 0 2px;
}

.emphasis-highlight {
    font-weight: 700;
    color: var(--main-color);
    background: linear-gradient(transparent 60%, var(--accent-color) 60%);
    padding: 0 2px;
}

.shishitsu-box {
    background: var(--white);
    border: 3px solid var(--main-color);
    border-radius: 12px;
    padding: 3rem 2rem;
    margin: 3rem auto;
    max-width: 900px;
}

.shishitsu-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--main-color);
    text-align: center;
    margin-bottom: 1.5rem;
    border: 3px solid var(--main-color);
    padding: 0.8rem 2rem;
    display: inline-block;
    border-radius: 8px;
    background: var(--white);
}

.shishitsu-description {
    font-size: 1.2rem;
    color: var(--text-color);
    text-align: center;
    margin-bottom: 2.5rem;
    font-weight: 500;
}

.qualities-comparison {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
    margin-top: 2rem;
}

.quality-item {
    flex: 1;
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
    border: 2px solid var(--border-color);
}

.quality-item h4 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--main-color);
    margin-bottom: 1rem;
    text-align: center;
}

.quality-item p {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-color);
    text-align: left;
}

.emphasis-inline {
    font-weight: 700;
    color: var(--main-color);
    background: linear-gradient(transparent 60%, var(--accent-color) 60%);
}

.quality-arrow {
    font-size: 3rem;
    color: var(--main-color);
    font-weight: 700;
    flex-shrink: 0;
}

.concept-text {
    font-size: 1.3rem;
    line-height: 1.8;
    color: var(--text-color);
    margin-top: 3rem;
    text-align: center;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    font-weight: 500;
}

.concept-text-left {
    text-align: left;
}

.concept-text .emphasis {
    font-weight: 700;
    color: var(--main-color);
    background: linear-gradient(transparent 60%, var(--accent-color) 60%);
    padding: 0 2px;
}

.concept-text .emphasis-highlight {
    font-weight: 700;
    color: var(--main-color);
    background: linear-gradient(transparent 60%, var(--accent-color) 60%);
    padding: 0 2px;
}

.concept-image {
    margin-bottom: 1rem;
}

.concept-cta {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.kishitsu-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}


/* ケース紹介セクション */
.cases {
    padding: 100px 0;
    background: var(--cream-bg);
    position: relative;
}

.case-study {
    max-width: 900px;
    margin: 0 auto;
    background: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 2px solid var(--border-color);
}

.case-profile {
    background: var(--light-bg);
    padding: 1.5rem 2rem;
    border-radius: 8px;
    margin-bottom: 2.5rem;
    border-left: 4px solid var(--main-color);
}

.profile-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 1rem 2rem;
}

.profile-list li {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-color);
}

.case-section {
    margin-bottom: 2.5rem;
}

.case-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--main-color);
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--accent-color);
}

.case-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-color);
}

.case-kishitsu {
    background: var(--light-bg);
    padding: 2rem;
    border-radius: 12px;
    margin-bottom: 2.5rem;
    border: 2px solid var(--border-color);
    text-align: center;
}

.kishitsu-label {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--main-color);
    text-align: center;
    margin-bottom: 1.5rem;
    border: 3px solid var(--main-color);
    padding: 0.6rem 1.5rem;
    display: inline-block;
    border-radius: 8px;
    background: var(--white);
}

.kishitsu-comparison {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.kishitsu-item {
    flex: 1;
    background: var(--white);
    padding: 1.5rem;
    border-radius: 8px;
}

.kishitsu-item h5 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--main-color);
    margin-bottom: 1rem;
    text-align: center;
}

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

.kishitsu-item ul li {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color);
    padding-left: 1.5rem;
    position: relative;
    text-align: left;
}

.kishitsu-item ul li:before {
    content: "•";
    position: absolute;
    left: 0.5rem;
    color: var(--accent-color);
    font-weight: 700;
}

.kishitsu-arrow {
    font-size: 2.5rem;
    color: var(--main-color);
    font-weight: 700;
    flex-shrink: 0;
}

/* ブログリンクボタン */
.case-blog-link {
    display: flex;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 2rem;
}

.blog-link-button {
    background: linear-gradient(135deg, #FF8C42 0%, #F1C75B 100%);
    color: var(--white);
    padding: 28px 20px;
    font-size: 1.225rem;
    font-weight: 700;
    border-radius: 50px;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    box-sizing: border-box;
    width: 430px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(255, 140, 66, 0.4);
    font-family: 'M PLUS Rounded 1c', sans-serif;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.blog-link-button:hover {
    background: linear-gradient(135deg, #FF6B2B 0%, #FFD700 100%);
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(255, 107, 43, 0.5);
}

/* お客様の声セクション */
.testimonials {
    padding: 100px 0;
    background: var(--white);
    position: relative;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

.testimonial-item {
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 2px solid var(--border-color);
}

.testimonial-image {
    width: 100%;
    padding-top: 100%; /* 正方形 */
    position: relative;
    overflow: hidden;
    background: var(--light-bg);
}

.testimonial-image img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%; /* 丸くする */
}

/* customer1.jpgの表示範囲を上にずらす */
.testimonial-image img[src="customer1.jpg"] {
    object-position: 50% 25%; /* 35%からさらに25%にして上にずらす */
}

.testimonial-content {
    padding: 2rem;
}

.testimonial-name {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--main-color);
    margin-bottom: 0.5rem;
    text-align: center;
}

.testimonial-attribute {
    font-size: 0.95rem;
    color: var(--light-text);
    margin-bottom: 1rem;
    text-align: center;
    line-height: 1.5;
}

.testimonial-text {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-color);
    text-align: left;
}

.testimonials-cta {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
}

/* サービスフローセクション */
.service-flow {
    padding: 100px 0;
    background: var(--white);
    position: relative;
}

.flow-steps {
    max-width: 900px;
    margin: 0 auto;
}

.step-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 3rem;
    background: var(--white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--accent-color);
    position: relative;
}

.step-item:last-child {
    margin-bottom: 0;
}

.step-number {
    background: var(--accent-color);
    color: var(--main-color);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    margin-right: 2rem;
    flex-shrink: 0;
    font-family: 'M PLUS Rounded 1c', sans-serif;
}

.step-content h3 {
    color: var(--main-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
    font-weight: 700;
}

.step-content p {
    color: var(--text-color);
    line-height: 1.7;
}

.service-flow-cta {
    display: flex;
    justify-content: center;
    margin-top: 4rem;
}

/* 問い合わせセクション */
.contact {
    padding: 100px 0;
    background: var(--gradient-card);
    position: relative;
}

.contact-vertical {
    max-width: 800px;
    margin: 0 auto;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-method {
    background: var(--white);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border: 2px solid var(--border-color);
}

.line-section {
    margin-bottom: 3rem;
    text-align: center;
}

.form-section {
    margin-top: 2rem;
}

.contact-header h3 {
    color: var(--main-color);
    margin-bottom: 1rem;
    font-size: 1.4rem;
    font-weight: 700;
}

.contact-header p {
    color: var(--text-color);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.line-button {
    width: 100%;
    max-width: 400px;
    background: #00B900;
    color: var(--white);
    font-size: 1.325rem;
    padding: 20px 32px;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 185, 0, 0.3);
    font-family: 'M PLUS Rounded 1c', sans-serif;
}

.line-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 185, 0, 0.4);
    background: #009900;
}

/* フォームスタイル */
.contact-form {
    margin-top: 2rem;
}

.form-group {
    margin-bottom: 2rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    color: var(--main-color);
}

.required {
    color: #e74c3c;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background-color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-color);
}

.datetime-inputs {
    display: flex;
    gap: 1rem;
}

.datetime-inputs input,
.datetime-inputs select {
    flex: 1;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
    font-weight: 400;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
    margin-top: 0.2rem;
}

/* フッター */
.footer {
    background: var(--gradient-bg);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-section.company-name h3 {
    margin: 0;
    color: var(--white);
    font-size: 1.2rem;
    font-weight: 700;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.footer-section.links {
    display: flex;
    align-items: center;
}

.footer-links {
    list-style: none;
    display: flex;
    gap: 2rem;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.9;
    transition: all 0.3s ease;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.footer-links a:hover {
    opacity: 1;
    color: var(--white);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    transform: translateY(-1px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    opacity: 0.9;
}

.footer-bottom p {
    color: var(--white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
    font-weight: 500;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    .concept-title {
        font-size: 1.5rem;
    }
    
    .concept-intro {
        font-size: 1.1rem;
    }
    
    .shishitsu-box {
        padding: 2rem 1.5rem;
    }
    
    .shishitsu-title {
        font-size: 1.5rem;
        padding: 0.6rem 1.5rem;
    }
    
    .shishitsu-description {
        font-size: 1rem;
    }
    
    .qualities-comparison {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .quality-arrow {
        font-size: 2.5rem;
        transform: rotate(90deg);
    }
    
    .quality-item h4 {
        font-size: 1.2rem;
    }
    
    .quality-item p {
        font-size: 0.95rem;
    }
    
    .concept-text {
        font-size: 1.1rem;
    }
    
    .hero {
        max-height: 70vh;
    }
    
    .hero-content {
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
    }
    
    .hero-catchcopy {
        position: absolute;
        top: 40px;
        left: 0px;
        right: 20px;
        text-align: center;
    }
    
    .catchcopy-main {
        font-size: 3rem;
    }
    
    .catchcopy-sub {
        font-size: 2rem;
    }
    
    .indent-line {
        padding-left: 2em;
    }
    
    .hero-icon {
        position: absolute;
        top: auto;
        right: auto;
        left: 50%;
        transform: translateX(-50%);
        bottom: 120px; /* さらに下に移動 */
    }
    
    .firstview-icon-img {
        width: 700px; /* 1000px * 0.7 = 700px */
        max-width: 63vw; /* 90vw * 0.7 = 63vw */
    }
    
    .hero-buttons {
        position: absolute;
        bottom: 40px;
        left: 20px;
        right: 20px;
        flex-direction: column;
        align-items: center;
    }
    
    .case-study {
        padding: 2rem 1.5rem;
    }
    
    .profile-list {
        flex-direction: row;
        gap: 1rem;
        flex-wrap: wrap;
    }
    
    .kishitsu-comparison {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .kishitsu-arrow {
        font-size: 2rem;
        transform: rotate(90deg);
    }
    
    .case-blog-link {
        margin-top: 1.5rem;
        padding-top: 1.5rem;
    }
    
    .blog-link-button {
        padding: 20px 20px;
        font-size: 1rem;
        width: 90%;
        max-width: 400px;
    }
    
    .case-subtitle {
        font-size: 1.3rem;
    }
    
    .case-text {
        font-size: 1rem;
    }
    
    .contact-vertical {
        max-width: 100%;
        padding: 0 1rem;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .line-section {
        margin-bottom: 2rem;
    }
    
    .form-section {
        margin-top: 1rem;
    }
    
    .step-item {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin-right: 0;
        margin-bottom: 1rem;
    }
    
    .datetime-inputs {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .hero {
        padding: 80px 0 60px;
    }
    
    .problem,
    .concept,
    .cases,
    .testimonials,
    .service-flow,
    .contact {
        padding: 60px 0;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .testimonial-name {
        font-size: 1.3rem;
    }
    
    .testimonial-attribute {
        font-size: 0.9rem;
    }
    
    .testimonial-text {
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.5rem;
    }
    
    .concept-title {
        font-size: 1.3rem;
    }
    
    .concept-intro {
        font-size: 1rem;
    }
    
    .shishitsu-box {
        padding: 1.5rem 1rem;
    }
    
    .shishitsu-title {
        font-size: 1.3rem;
        padding: 0.5rem 1rem;
    }
    
    .shishitsu-description {
        font-size: 0.95rem;
    }
    
    .quality-item {
        padding: 1.5rem;
    }
    
    .quality-item h4 {
        font-size: 1.1rem;
    }
    
    .quality-item p {
        font-size: 0.9rem;
    }
    
    .quality-arrow {
        font-size: 2rem;
    }
    
    .concept-text {
        font-size: 1rem;
    }
    
    .case-study {
        padding: 1.5rem 1rem;
    }
    
    .profile-list li {
        font-size: 1rem;
    }
    
    .case-subtitle {
        font-size: 1.2rem;
    }
    
    .case-text {
        font-size: 0.95rem;
    }
    
    .kishitsu-item {
        padding: 1rem;
    }
    
    .kishitsu-item h5 {
        font-size: 1.1rem;
    }
    
    .kishitsu-item ul li {
        font-size: 0.95rem;
    }
    
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .testimonial-content {
        padding: 1.5rem;
    }
    
    .testimonial-name {
        font-size: 1.2rem;
    }
    
    .testimonial-attribute {
        font-size: 0.85rem;
    }
    
    .testimonial-text {
        font-size: 0.9rem;
    }
    
    .hero {
        max-height: 85vh;
        min-height: auto;
    }
    
    .hero::before {
        padding-top: 150%;
    }
    
    .hero-content {
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
    }
    
    .hero-catchcopy {
        position: absolute;
        top: 30px;
        left: -5px;
        right: 15px;
        text-align: center;
    }
    
    .catchcopy-main {
        font-size: 2.3rem;
    }
    
    .catchcopy-sub {
        font-size: 1.6rem;
    }
    
    .indent-line {
        padding-left: 2em;
    }
    
    .hero-icon {
        position: absolute;
        top: auto;
        right: auto;
        left: 50%;
        transform: translateX(-50%);
        bottom: 100px; /* さらに下に移動 */
        z-index: 1;
    }
    
    .firstview-icon-img {
        width: 420px; /* 600px * 0.7 = 420px */
        max-width: 77vw; /* 110vw * 0.7 = 77vw */
    }
    
    .hero-buttons {
        position: absolute;
        bottom: 30px;
        left: 15px;
        right: 15px;
        flex-direction: column;
        align-items: center;
    }
    
    .problem-item,
    .case-item,
    .step-item,
    .contact-method {
        padding: 1.5rem;
    }
    
    .concept-title {
        font-size: 1.5rem;
    }
    
    .concept-intro {
        font-size: 1.1rem;
        padding: 0 1rem;
    }
    
    .concept-text {
        font-size: 1.1rem;
    }
    
    .concept-cta {
        flex-direction: column;
        align-items: center;
        gap: 1rem;
    }
    
    .cta-button {
        padding: 20px 20px;
        font-size: 1rem;
        width: 90%;
        max-width: 400px;
    }
    
    .submit-button {
        padding: 16px 32px;
        font-size: 1.1rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}


/* ホバーエフェクト */
.case-item,
.step-item,
.contact-method {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.case-item:hover,
.step-item:hover,
.contact-method:hover {
    transform: translateY(-2px);
}