/* ========================================
   リセット & 基本設定
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* カラーパレット - ポップで法人向けの安心感（青系） */
    --primary-color: #4A90E2;
    --secondary-color: #5DB8E5;
    --accent-color: #FFB84D;
    --text-dark: #2C3E50;
    --text-gray: #6C757D;
    --bg-light: #F0F8FF;
    --bg-white: #FFFFFF;
    --gradient-1: linear-gradient(135deg, #4A90E2 0%, #5DB8E5 100%);
    --gradient-2: linear-gradient(135deg, #5DB8E5 0%, #FFB84D 100%);
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(74, 144, 226, 0.25);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--text-dark);
    line-height: 1.8;
    background-color: var(--bg-white);
    overflow-x: hidden;
}

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

/* ========================================
   ヘッダー
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo span {
    font-size: 16px;
    margin-left: 5px;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: width 0.3s ease;
}

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

.btn-header {
    padding: 10px 25px;
    background: var(--gradient-1);
    color: white !important;
    border-radius: 30px;
    font-weight: 600;
}

.btn-header::after {
    display: none;
}

.btn-header:hover {
    color: white !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* ========================================
   ヒーローセクション
======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    opacity: 0.05;
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(74, 144, 226, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(93, 184, 229, 0.3) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(30px, 30px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 60px 20px;
}

.hero-title {
    margin-bottom: 30px;
}

.hero-title-main {
    display: block;
    font-size: 42px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.4;
    margin-bottom: 10px;
}

.hero-title-main:last-of-type {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0;
}

.hero-break {
    display: none;
}

.hero-title-sub {
    display: block;
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.hero-wave svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 120px;
}

.hero-wave path {
    fill: var(--bg-white);
}

/* ========================================
   ボタンスタイル
======================================== */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 40px;
    background: var(--gradient-1);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-large {
    padding: 18px 50px;
    font-size: 20px;
}

/* ========================================
   セクション共通
======================================== */
section {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    line-height: 1.5;
}

.section-title .highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.section-title-small {
    font-size: 28px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
}

/* ========================================
   お悩みセクション
======================================== */
.problems {
    background: var(--bg-light);
    padding: 60px 0;
}

.problems-list {
    list-style: none;
    max-width: 700px;
    margin: 0 auto 30px;
}

.problems-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    margin-bottom: 15px;
    background: white;
    border-radius: 15px;
    box-shadow: var(--shadow);
    font-size: 18px;
    transition: transform 0.3s ease;
}

.problems-list li:hover {
    transform: translateX(10px);
}

.problems-list i {
    color: var(--primary-color);
    font-size: 24px;
}

.problems-arrow {
    text-align: center;
    margin: 30px 0;
    font-size: 40px;
    color: var(--primary-color);
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0);
    }
    40% {
        transform: translateY(-20px);
    }
    60% {
        transform: translateY(-10px);
    }
}

.problems-solution {
    text-align: center;
    font-size: 32px;
    font-weight: 700;
    color: var(--primary-color);
}

/* ========================================
   価値提案セクション
======================================== */
.value-prop {
    padding: 80px 0;
}

.comparison {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 30px;
    max-width: 900px;
    margin: 0 auto 60px;
    align-items: center;
}

.comparison-item {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    text-align: center;
}

.comparison-left {
    border: 3px solid #E8F4FD;
}

.comparison-right {
    border: 3px solid #FFB84D;
}

.comparison-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 36px;
}

.comparison-left .comparison-icon {
    background: #E8F4FD;
    color: var(--text-gray);
}

.comparison-right .comparison-icon {
    background: var(--gradient-2);
    color: white;
}

.comparison-item h4 {
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: 700;
}

.comparison-item p {
    color: var(--text-gray);
    line-height: 1.8;
}

.comparison-divider {
    display: flex;
    align-items: center;
    justify-content: center;
}

.comparison-divider span {
    background: var(--gradient-1);
    color: white;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-size: 20px;
    box-shadow: var(--shadow);
    transform: rotate(0deg);
}

.sns-benefits {
    max-width: 900px;
    margin: 0 auto;
}

.sns-benefits-intro {
    text-align: center;
    font-size: 20px;
    margin-bottom: 40px;
    line-height: 1.8;
    font-weight: 500;
}

.sns-benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 40px;
}

.benefit-card {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

.benefit-card:hover {
    transform: translateY(-10px);
}

.benefit-icon {
    font-size: 60px;
    margin-bottom: 15px;
}

.benefit-card h5 {
    font-size: 18px;
    margin-bottom: 10px;
    color: var(--primary-color);
    font-weight: 600;
}

.benefit-card p {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-dark);
}

.sns-conclusion {
    text-align: center;
    font-size: 24px;
    margin-bottom: 30px;
    padding: 25px;
    background: var(--bg-light);
    border-radius: 15px;
}

.sns-message {
    text-align: center;
    font-size: 20px;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ========================================
   事業内容セクション
======================================== */
.services {
    background: var(--bg-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 1100px;
    margin: 0 auto;
}

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    border-radius: 50%;
    font-size: 48px;
    color: white;
}

.service-card h4 {
    font-size: 24px;
    margin-bottom: 20px;
    font-weight: 700;
    color: var(--text-dark);
}

.service-list {
    list-style: none;
    text-align: left;
    margin-bottom: 20px;
}

.service-list li {
    padding: 10px 0;
    border-bottom: 1px solid #F0F0F0;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.service-list li:last-child {
    border-bottom: none;
}

.badge {
    background: var(--gradient-2);
    color: white;
    padding: 3px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    margin-left: 8px;
}

.service-subtitle {
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.sns-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-bottom: 20px;
}

.sns-icons span {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 8px 15px;
    background: var(--bg-light);
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
}

.sns-icons i {
    color: var(--primary-color);
}

.service-description {
    color: var(--text-gray);
    line-height: 1.8;
    font-weight: 500;
}

/* ========================================
   強みセクション
======================================== */
.strengths {
    padding: 80px 0;
}

.strengths-list {
    max-width: 900px;
    margin: 0 auto;
}

.strength-item {
    display: flex;
    gap: 30px;
    margin-bottom: 50px;
    align-items: flex-start;
}

.strength-number {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    color: white;
    font-size: 40px;
    font-weight: 700;
    border-radius: 50%;
    box-shadow: var(--shadow);
}

.strength-content {
    flex: 1;
}

.strength-content h4 {
    font-size: 24px;
    margin-bottom: 15px;
    font-weight: 700;
    color: var(--text-dark);
}

.strength-content p {
    font-size: 18px;
    color: var(--text-gray);
    line-height: 1.8;
}

/* ========================================
   代表メッセージセクション
======================================== */
.ceo {
    background: var(--bg-light);
}

.ceo-content {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 50px;
    max-width: 900px;
    margin: 0 auto;
    align-items: start;
}

.ceo-photo-placeholder {
    width: 250px;
    height: 250px;
    background: linear-gradient(135deg, #E8E8E8 0%, #F5F5F5 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 100px;
    color: #BDBDBD;
    box-shadow: var(--shadow);
}

.ceo-name {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--text-dark);
}

.ceo-message p {
    margin-bottom: 20px;
    font-size: 18px;
    line-height: 1.9;
    color: var(--text-gray);
}

.ceo-message p:nth-child(2) {
    font-weight: 600;
    color: var(--primary-color);
    font-size: 20px;
}

/* ========================================
   実績セクション
======================================== */
.achievements {
    padding: 80px 0;
}

.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    max-width: 800px;
    margin: 0 auto 40px;
}

.achievement-card {
    background: white;
    padding: 40px 30px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease;
}

.achievement-card:hover {
    transform: scale(1.05);
}

.achievement-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-2);
    border-radius: 50%;
    font-size: 40px;
    color: white;
}

.achievement-card h4 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-dark);
    line-height: 1.6;
}

.achievements-note {
    text-align: center;
    color: var(--text-gray);
    font-size: 14px;
}

/* ========================================
   お問い合わせセクション
======================================== */
.contact {
    background: var(--bg-light);
}

.contact-intro {
    text-align: center;
    font-size: 20px;
    color: var(--text-gray);
    margin-bottom: 50px;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background: white;
    padding: 50px;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: var(--text-dark);
}

.required {
    color: var(--primary-color);
    font-size: 12px;
    margin-left: 5px;
    background: #E8F4FD;
    padding: 2px 8px;
    border-radius: 5px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #E8E8E8;
    border-radius: 10px;
    font-size: 16px;
    font-family: 'Noto Sans JP', sans-serif;
    transition: border-color 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: underline;
}

.form-message {
    margin-top: 20px;
    padding: 15px;
    border-radius: 10px;
    text-align: center;
    font-weight: 600;
    display: none;
}

.form-message.success {
    display: block;
    background: #D4EDDA;
    color: #155724;
}

.form-message.error {
    display: block;
    background: #F8D7DA;
    color: #721C24;
}

/* ========================================
   フッター
======================================== */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 30px;
}

.footer-company h4 {
    font-size: 24px;
    margin-bottom: 15px;
}

.footer-company p {
    margin-bottom: 8px;
    opacity: 0.8;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.6;
}

/* ========================================
   モーダル
======================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    overflow: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    position: relative;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.3);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 32px;
    cursor: pointer;
    color: var(--text-gray);
    transition: color 0.3s ease;
}

.modal-close:hover {
    color: var(--primary-color);
}

.modal-content h3 {
    margin-bottom: 20px;
    font-size: 24px;
}

.modal-content p {
    line-height: 1.8;
    color: var(--text-gray);
}

/* ========================================
   レスポンシブデザイン
======================================== */
.pc-only {
    display: inline;
}

.sp-only {
    display: none;
}

/* タブレット */
@media (max-width: 992px) {
    .hero-title-main {
        font-size: 36px;
    }

    .hero-title-sub {
        font-size: 30px;
    }

    .section-title {
        font-size: 30px;
    }

    .ceo-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .ceo-photo-placeholder {
        margin: 0 auto;
    }

    .comparison {
        grid-template-columns: 1fr;
    }

    .comparison-divider {
        margin: 20px 0;
    }

    .comparison-divider span {
        transform: rotate(0deg);
    }

    .strength-item {
        gap: 20px;
    }

    .strength-number {
        width: 60px;
        height: 60px;
        font-size: 32px;
    }
}

/* スマートフォン */
@media (max-width: 768px) {
    .pc-only {
        display: none;
    }

    .sp-only {
        display: inline;
    }

    .nav-list {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        gap: 0;
        padding: 30px 20px;
        transition: left 0.3s ease;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    }

    .nav-list.active {
        left: 0;
    }

    .nav-list li {
        width: 100%;
        text-align: center;
        padding: 15px 0;
        border-bottom: 1px solid #F0F0F0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }

    .hero {
        min-height: auto;
        padding: 120px 0 80px;
    }

    .hero-title-main {
        font-size: 24px;
        line-height: 1.5;
    }

    .hero-break {
        display: inline;
    }

    .hero-description {
        font-size: 16px;
    }

    .btn-primary {
        font-size: 16px;
        padding: 12px 30px;
    }

    .btn-large {
        font-size: 18px;
        padding: 15px 35px;
    }

    .container {
        padding: 0 16px;
    }

    section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 26px;
        margin-bottom: 35px;
    }

    .problems-list li {
        font-size: 15px;
        padding: 12px;
    }

    .comparison-item {
        padding: 25px 18px;
    }

    .comparison-item h4 {
        font-size: 20px;
    }

    .comparison-item p {
        font-size: 15px;
    }

    .sns-benefits-intro {
        font-size: 16px;
        padding: 0 8px;
    }

    .benefit-card {
        padding: 20px;
    }

    .benefit-icon {
        font-size: 50px;
    }

    .sns-conclusion {
        font-size: 17px;
        padding: 18px;
        line-height: 1.7;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .service-card {
        padding: 30px 20px;
    }

    .service-icon {
        width: 80px;
        height: 80px;
        font-size: 40px;
        margin-bottom: 20px;
    }

    .service-card h4 {
        font-size: 20px;
        margin-bottom: 15px;
    }

    .strength-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .strength-content h4 {
        font-size: 19px;
        margin-bottom: 12px;
    }

    .strength-content p {
        font-size: 15px;
        line-height: 1.7;
    }

    .ceo-message p {
        font-size: 15px;
        line-height: 1.8;
    }

    .ceo-name {
        font-size: 22px;
    }

    .contact-form {
        padding: 25px 18px;
    }

    .form-group {
        margin-bottom: 25px;
    }

    .modal-content {
        padding: 25px 18px;
        width: 92%;
    }

    .modal-content h3 {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 24px;
    }

    .hero-title-main {
        font-size: 22px;
        line-height: 1.5;
    }

    .section-title {
        font-size: 22px;
    }

    .problems-solution {
        font-size: 26px;
    }

    .ceo-photo-placeholder {
        width: 200px;
        height: 200px;
        font-size: 80px;
    }

    .ceo-name {
        font-size: 20px;
    }

    .achievement-card h4 {
        font-size: 18px;
    }
}