/* ========================================
   基本設定
======================================== */
:root {
    /* カラーパレット - BtoBらしい上品な配色 */
    --primary-color: #0891D1;
    --primary-dark: #0672A8;
    --primary-light: #E6F6FC;
    --secondary-color: #2C3E50;
    --text-primary: #1A202C;
    --text-secondary: #4A5568;
    --text-light: #718096;
    --bg-white: #FFFFFF;
    --bg-gray-light: #F7FAFC;
    --bg-gray: #EDF2F7;
    --border-color: #E2E8F0;
    --success-color: #0891D1;
    
    /* タイポグラフィ */
    --font-ja: 'Noto Sans JP', sans-serif;
    --font-en: 'Inter', sans-serif;
    
    /* スペーシング */
    --section-padding: 100px;
    --section-padding-mobile: 60px;
    --container-max-width: 1200px;
    --section-gap: 40px;
    
    /* トランジション */
    --transition-base: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    overflow-x: hidden;
    overflow-y: scroll;
}

body {
    font-family: var(--font-ja);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-primary);
    background-color: var(--bg-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    width: 100%;
}

main {
    background-color: var(--bg-white);
    width: 100%;
    display: block;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-base);
}

ul {
    list-style: none;
}

/* ========================================
   共通コンポーネント
======================================== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 40px;
}

.section-header {
    text-align: center;
    margin-bottom: 70px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    letter-spacing: 0.02em;
}

.section-lead {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 16px 40px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
    border: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: var(--bg-white);
    box-shadow: 0 4px 12px rgba(8, 145, 209, 0.2);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(8, 145, 209, 0.3);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-large {
    padding: 20px 60px;
    font-size: 1.125rem;
}

/* ========================================
   ヘッダー
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 9999;
    transition: var(--transition-base);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.logo {
    display: flex;
    align-items: center;
    height: 100%;
}

.logo img {
    height: 80px;
    width: auto;
}

.nav {
    display: flex;
    gap: 35px;
    align-items: center;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link-cta {
    padding: 9px 24px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50px;
    font-size: 0.9rem;
}

.nav-link-cta::after {
    display: none;
}

.nav-link-cta:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-base);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 100px;
    left: 0;
    right: 0;
    background-color: var(--bg-white);
    border-bottom: 1px solid var(--border-color);
    z-index: 9998;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.mobile-menu.active {
    max-height: 400px;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    padding: 20px 0;
}

.mobile-nav-link {
    padding: 15px 40px;
    color: var(--text-secondary);
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
}

.mobile-nav-link:last-child {
    border-bottom: none;
}

.mobile-nav-link-cta {
    color: var(--primary-color);
    font-weight: 600;
}

/* ========================================
   ヒーローセクション
======================================== */
.hero {
    position: relative;
    display: flex;
    align-items: center;
    padding-top: 140px;
    padding-bottom: 80px;
    background-color: var(--bg-gray-light);
    width: 100%;
    overflow: visible;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    width: 100%;
}

.hero-content {
    padding: 60px 0;
}

.hero-image {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image img {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    object-fit: cover;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 30px;
    letter-spacing: 0.02em;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 50px;
}

.hero-cta {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

/* ========================================
   課題提起セクション
======================================== */
.problems {
    padding: var(--section-padding) 0;
    background-color: var(--bg-white);
    width: 100%;
    overflow: visible;
}

.problems .container {
    max-width: 1100px;
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.problem-card {
    background-color: var(--bg-gray-light);
    padding: 40px 30px;
    border-radius: 16px;
    transition: var(--transition-base);
}

.problem-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.problem-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.problem-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.5;
}

.problem-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.problems-note {
    text-align: center;
    padding: 40px;
    background-color: var(--primary-light);
    border-radius: 16px;
    margin-top: 40px;
}

.problems-note p {
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 500;
    line-height: 1.8;
}

/* ========================================
   KOKOAIZとは
======================================== */
.about {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-gray-light) 100%);
    width: 100%;
    overflow: visible;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
}

.about-image-section {
    margin-bottom: 60px;
    display: flex;
    justify-content: center;
}

.about-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}

.about-main {
    margin-bottom: 60px;
}

.about-definition {
    font-size: 1.25rem;
    color: var(--text-primary);
    line-height: 2;
    margin-bottom: 30px;
}

.about-definition strong {
    color: var(--primary-color);
    font-weight: 600;
}

.about-text {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 2;
}

.about-subtitle {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 30px;
    text-align: center;
}

.differences-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.difference-item {
    display: flex;
    gap: 20px;
    padding: 25px;
    background-color: var(--bg-white);
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.difference-label {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    background-color: var(--bg-gray);
    color: var(--text-light);
}

.difference-label.success {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.difference-content strong {
    display: block;
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.difference-content p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================
   実績セクション
======================================== */
.achievements {
    padding: 80px 0;
    background-color: var(--primary-color);
    color: var(--bg-white);
    width: 100%;
    overflow: visible;
}

.achievements .section-title,
.achievements .section-lead {
    color: var(--bg-white);
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

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

.achievement-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--bg-white);
    margin-bottom: 10px;
    line-height: 1;
}

.achievement-text {
    font-size: 1.05rem;
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
}

/* ========================================
   YouTube動画セクション
======================================== */
.video-section {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-gray-light) 100%);
    width: 100%;
    overflow: visible;
}

.video-container {
    max-width: 900px;
    margin: 0 auto;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%; /* 16:9 アスペクト比 */
    height: 0;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    background-color: #000;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 20px;
}

/* ========================================
   提供価値・特徴
======================================== */
.values {
    padding: var(--section-padding) 0;
    background-color: var(--bg-white);
    width: 100%;
    overflow: visible;
}

.values-mascot-section {
    display: flex;
    align-items: center;
    gap: 50px;
    max-width: 700px;
    margin: 0 auto 60px;
    padding: 30px;
    background-color: var(--bg-gray-light);
    border-radius: 20px;
}

.values-mascot-image {
    flex-shrink: 0;
}

.values-mascot-image img {
    width: 120px;
    height: 120px;
    object-fit: contain;
    animation: mascotFloat 3s ease-in-out infinite;
}

@keyframes mascotFloat {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-10px);
    }
}

.values-mascot-text {
    flex: 1;
}

.values-mascot-message {
    font-size: 1.1rem;
    color: var(--text-primary);
    line-height: 1.8;
    margin-bottom: 15px;
    font-weight: 500;
}

.values-mascot-name {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-align: right;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.value-card {
    position: relative;
    padding: 40px 30px;
    background-color: var(--bg-gray-light);
    border-radius: 16px;
    transition: var(--transition-base);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.value-number {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.1em;
    margin-bottom: 20px;
}

.value-title {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.value-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ========================================
   中間CTA
======================================== */
.mid-cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--bg-gray-light) 100%);
    width: 100%;
    overflow: visible;
}

.mid-cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.mid-cta-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 20px;
    line-height: 1.4;
}

.mid-cta-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 35px;
    line-height: 1.8;
}

/* ========================================
   お客様の声
======================================== */
.testimonials {
    padding: var(--section-padding) 0;
    background-color: var(--bg-white);
    width: 100%;
    overflow: visible;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    max-width: 1100px;
    margin: 0 auto;
}

.testimonial-card {
    background-color: var(--bg-gray-light);
    padding: 35px 30px;
    border-radius: 16px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition-base);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.testimonial-header {
    margin-bottom: 20px;
}

.testimonial-company {
    font-size: 0.9rem;
    color: var(--primary-color);
    font-weight: 600;
}

.testimonial-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-style: italic;
}

/* ========================================
   サービス内容
======================================== */
.service {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-gray-light) 100%);
    width: 100%;
    overflow: visible;
}

.service-image-section {
    margin-bottom: 70px;
    display: flex;
    justify-content: center;
}

.service-image {
    width: 100%;
    max-width: 900px;
    height: auto;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    object-fit: cover;
}

.service-list {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.service-item {
    display: flex;
    gap: 30px;
    padding: 40px;
    background-color: var(--bg-white);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition-base);
}

.service-item:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.service-icon {
    flex-shrink: 0;
    font-size: 3rem;
}

.service-content {
    flex: 1;
}

.service-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.service-text {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-list-detail {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
}

.service-list-detail li {
    font-size: 0.9rem;
    color: var(--text-secondary);
    padding-left: 20px;
    position: relative;
}

.service-list-detail li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* ========================================
   向いている企業
======================================== */
.fit {
    padding: var(--section-padding) 0;
    background-color: var(--bg-white);
    width: 100%;
    overflow: visible;
}

.fit-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
    margin-bottom: 50px;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.fit-recommended,
.fit-not-recommended {
    padding: 40px;
    border-radius: 16px;
}

.fit-recommended {
    background-color: var(--primary-light);
    border: 2px solid var(--primary-color);
}

.fit-not-recommended {
    background-color: var(--bg-gray-light);
    border: 2px solid var(--border-color);
}

.fit-subtitle {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 25px;
}

.fit-list,
.fit-list-negative {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.fit-list li,
.fit-list-negative li {
    font-size: 1rem;
    color: var(--text-secondary);
    padding-left: 30px;
    position: relative;
    line-height: 1.7;
}

.fit-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 1.2rem;
}

.fit-list-negative li::before {
    content: '×';
    position: absolute;
    left: 0;
    color: var(--text-light);
    font-weight: 700;
    font-size: 1.2rem;
}

.fit-note {
    text-align: center;
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.8;
    padding: 30px;
    background-color: var(--bg-gray-light);
    border-radius: 12px;
}

/* ========================================
   進め方の流れ
======================================== */
.flow {
    padding: var(--section-padding) 0;
    background: linear-gradient(180deg, var(--bg-white) 0%, var(--bg-gray-light) 100%);
    width: 100%;
    overflow: visible;
}

.flow-steps {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 20px;
}

.flow-step {
    flex: 1;
    min-width: 200px;
    max-width: 250px;
    padding: 40px 30px;
    background-color: var(--bg-white);
    border-radius: 16px;
    border: 2px solid var(--border-color);
    text-align: center;
    transition: var(--transition-base);
}

.flow-step:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.flow-step-number {
    display: inline-block;
    padding: 8px 20px;
    background-color: var(--primary-color);
    color: var(--bg-white);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.flow-step-title {
    font-size: 1.375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.flow-step-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.flow-arrow {
    font-size: 2rem;
    color: var(--primary-color);
    font-weight: 300;
}

/* ========================================
   代表紹介
======================================== */
.representative {
    padding: 80px 0;
    background-color: var(--bg-gray-light);
    width: 100%;
    overflow: visible;
}

.representative-content {
    display: flex;
    align-items: center;
    gap: 50px;
    max-width: 900px;
    margin: 0 auto;
}

.representative-image {
    flex-shrink: 0;
}

.representative-image img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.representative-text {
    flex: 1;
}

.representative-message {
    font-size: 1.05rem;
    color: var(--text-primary);
    line-height: 1.9;
    margin-bottom: 15px;
}

.representative-name {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-align: right;
}

/* ========================================
   CTAセクション
======================================== */
.cta {
    padding: var(--section-padding) 0;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--bg-white);
    width: 100%;
    overflow: visible;
}

.cta-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 30px;
    line-height: 1.4;
}

.cta-text {
    font-size: 1.125rem;
    line-height: 2;
    margin-bottom: 50px;
    opacity: 0.95;
}

.cta-buttons {
    margin-bottom: 30px;
}

.cta .btn-primary {
    background-color: var(--bg-white);
    color: var(--primary-color);
}

.cta .btn-primary:hover {
    background-color: var(--bg-gray-light);
    transform: translateY(-3px);
}

.cta-urgency {
    margin: 25px 0;
    padding: 15px 25px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 10px;
    display: inline-block;
}

.cta-urgency-text {
    font-size: 1.05rem;
    color: var(--bg-white);
    font-weight: 500;
}

.cta-urgency-text strong {
    font-size: 1.3rem;
    font-weight: 700;
    color: #FFD700;
}

.cta-note {
    font-size: 0.9rem;
    opacity: 0.85;
    margin-bottom: 40px;
}

.cta-social {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.cta-social-text {
    font-size: 1rem;
    margin-bottom: 20px;
    opacity: 0.9;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 30px;
    background-color: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 50px;
    color: var(--bg-white);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition-base);
}

.social-link:hover {
    background-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

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

.footer-content {
    display: flex;
    align-items: center;
    gap: 30px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo img {
    height: 50px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-company {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.footer-tagline {
    font-size: 0.95rem;
    opacity: 0.8;
    margin-bottom: 15px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--bg-white);
    transition: var(--transition-base);
}

.footer-social-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-3px);
}

.footer-social-link svg {
    width: 18px;
    height: 18px;
}

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

.footer-copyright {
    font-size: 0.875rem;
    opacity: 0.7;
    margin-bottom: 10px;
}

.footer-company-info {
    font-size: 0.875rem;
    opacity: 0.7;
}

.footer-company-link {
    color: var(--bg-white);
    text-decoration: underline;
    opacity: 0.9;
    transition: var(--transition-base);
}

.footer-company-link:hover {
    opacity: 1;
    color: var(--primary-light);
}

/* ========================================
   レスポンシブデザイン
======================================== */
@media (max-width: 1024px) {
    .container {
        padding: 0 30px;
    }
    
    .hero-title {
        font-size: 2.75rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    /* 提供価値グリッド */
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .values-mascot-section {
        gap: 30px;
        padding: 25px;
    }
    
    .values-mascot-image img {
        width: 100px;
        height: 100px;
    }
    
    /* 課題グリッド */
    .problems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .flow-arrow {
        display: none;
    }
    
    .flow-steps {
        flex-direction: column;
    }
    
    .flow-step {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: var(--section-padding-mobile);
    }
    
    .container {
        padding: 0 20px;
    }
    
    /* ヘッダー */
    .nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    /* ヒーロー */
    .hero {
        min-height: auto;
        padding: 120px 0 60px;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-image {
        order: -1;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.05rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .hero-cta .btn {
        width: 100%;
    }
    
    /* セクション */
    .section-title {
        font-size: 1.75rem;
    }
    
    .section-lead {
        font-size: 1rem;
    }
    
    /* マスコット */
    .values-mascot-section {
        flex-direction: column;
        text-align: center;
        gap: 20px;
        padding: 25px 20px;
    }
    
    .values-mascot-image img {
        width: 90px;
        height: 90px;
    }
    
    .values-mascot-message {
        font-size: 1rem;
    }
    
    .values-mascot-name {
        text-align: center;
    }
    
    /* 提供価値 */
    .values-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    /* 課題グリッド */
    .problems-grid {
        grid-template-columns: 1fr;
    }
    
    /* 代表紹介 */
    .representative {
        padding: 60px 0;
    }
    
    .representative-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
    
    .representative-image img {
        width: 100px;
        height: 100px;
    }
    
    .representative-message {
        font-size: 1rem;
    }
    
    .representative-name {
        text-align: center;
    }
    
    /* 実績 */
    .achievements {
        padding: 60px 0;
    }
    
    .achievements-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }
    
    .achievement-number {
        font-size: 2.5rem;
    }
    
    /* 中間CTA */
    .mid-cta {
        padding: 60px 0;
    }
    
    .mid-cta-title {
        font-size: 1.5rem;
    }
    
    .mid-cta-text {
        font-size: 1rem;
    }
    
    /* お客様の声 */
    .testimonials-grid {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    
    .testimonial-card {
        padding: 25px 20px;
    }
    
    /* YouTube動画 */
    .video-container {
        padding: 0 10px;
    }
    
    .video-wrapper {
        border-radius: 12px;
    }
    
    .video-wrapper iframe {
        border-radius: 12px;
    }
    
    /* CTA緊急性 */
    .cta-urgency {
        padding: 12px 20px;
    }
    
    .cta-urgency-text {
        font-size: 0.95rem;
    }
    
    .cta-urgency-text strong {
        font-size: 1.15rem;
    }
    
    /* 課題提起 */
    .problems-grid {
        grid-template-columns: 1fr;
    }
    
    /* サービス */
    .service-item {
        flex-direction: column;
        gap: 20px;
        padding: 30px 20px;
    }
    
    .service-icon {
        text-align: center;
    }
    
    .service-list-detail {
        grid-template-columns: 1fr;
    }
    
    /* 向いている企業 */
    .fit-content {
        grid-template-columns: 1fr;
    }
    
    /* CTA */
    .cta-title {
        font-size: 1.75rem;
    }
    
    .cta-text {
        font-size: 1rem;
    }
    
    /* CTA */
    .cta-social {
        margin-top: 40px;
        padding-top: 30px;
    }
    
    .social-link {
        font-size: 0.9rem;
        padding: 10px 24px;
    }
    
    /* フッター */
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    /* ユーティリティ */
    .sp-hide {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 14px 30px;
        font-size: 0.95rem;
    }
    
    .btn-large {
        padding: 16px 40px;
        font-size: 1rem;
    }
    
    .value-title,
    .service-title {
        font-size: 1.25rem;
    }
}

/* ========================================
   アニメーション
======================================== */
/* スクロールアニメーションは削除しました */