/* 基本設定 */
:root {
    --primary-color: #0066FF;
    --secondary-color: #F8FAFC;
    --text-color: #333333;
    --gray-color: #666666;
    --border-radius: 12px;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    line-height: 1.6;
    padding-top: 60px;
}

h1, h2, h3, h4 {
    margin: 0 0 1rem 0;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
    padding: 0;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

.text-blue {
    color: var(--primary-color);
}

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

.bg-light {
    background-color: var(--secondary-color);
}

.bg-blue-light {
    background-color: #eef4ff;
}

.bg-soft-ice {
    background-color: #f8f9fb;
}

/* ボタン */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.3s ease-in-out;
    text-align: center;
    border: none;
    font-family: 'Noto Sans JP', sans-serif;
    box-sizing: border-box;
}

.btn--primary {
    background-color: #2962FF;
    color: white;
    border: 2px solid #2962FF;
    box-shadow: 0 2px 4px rgba(41, 98, 255, 0.3);
}

.btn--primary:hover {
    background-color: #1e52e6;
    border-color: #1e52e6;
    box-shadow: 0 4px 8px rgba(41, 98, 255, 0.4);
}

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

.btn--gray {
    background-color: #F0F0F0;
    color: #333333;
    border: 2px solid #F0F0F0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn--gray:hover {
    background-color: #E0E0E0;
    border-color: #E0E0E0;
}

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

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

.btn--dark {
    background-color: #222;
    color: white;
    border: 2px solid #222;
}

.btn--dark:hover {
    background-color: #333;
    border-color: #333;
}

.btn--lg {
    padding: 15px 40px;
    font-size: 1.1rem;
}

.full-width {
    width: 100%;
    box-sizing: border-box;
}

/* ヘッダー */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    z-index: 1000;
    height: auto;
    min-height: 60px;
    display: flex;
    align-items: center;
}

.header__container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 12px 20px;
    box-sizing: border-box;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    white-space: nowrap;
}

.nav {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.nav__link {
    font-weight: 500;
    font-size: 0.9rem;
}

/* ヒーローセクション */
.hero {
    padding: 100px 0 60px;
    text-align: center;
    background: linear-gradient(180deg, #F0F6FF 0%, #FFFFFF 100%);
}

.hero__content {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

.hero__tag {
    display: inline-block;
    background: #E0EAFF;
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: bold;
}

.hero__title {
    font-size: 3.5rem;
    line-height: 1.2;  
}

.hero__title-main {
    font-size: 10rem;
    color: #0066FF;
    display: block;
    line-height: 1;
    margin-bottom: -0.3em;
}

.hero__title-sub {
    color: #333333;
    display: block;
    margin-top: -0.2em;
}

.hero__desc {
    font-size: 1.1rem;
    color: var(--gray-color);
    margin-top: 40px;
    margin-bottom: 40px;
    line-height: 1.8;
}

.hero__buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.hero__buttons .btn {
    min-width: 240px;
    flex: 1;
    max-width: 280px;
}

.hero__buttons .btn--primary:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(41, 98, 255, 0.4);
}

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

.section__title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.section__tag {
    display: inline-block;
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-bottom: 20px;
    font-weight: bold;
    letter-spacing: 2px;
    width: 100%;
    text-align: center;
}

.section__desc {
    text-align: center;
    font-size: 1rem;
    color: var(--gray-color);
    margin-bottom: 60px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* グリッドレイアウト */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

/* カード */
.card {
    background: white;
    padding: 15px;
    border-radius: var(--border-radius);
    border: 1px solid #E0E0E0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transition: transform 0.3s, border-color 0.3s;
    display: flex;
    flex-direction: column;
    width: 100%;
    aspect-ratio: 1 / 1;
    overflow: auto;
    font-size: 0.9rem;
}

.card:hover {
    transform: translateY(-5px);
    border-color: #0066FF;
}

.card--blue {
    background-color: #E0EAFF;
}

.card__icon {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.card h3 {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 10px;
}

.card__link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    color: var(--primary-color);
    font-weight: 500;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #E0E0E0;
    text-decoration: none;
    transition: color 0.3s;
}

.card__link:hover {
    color: #0052cc;
}

.card__arrow {
    font-size: 1.2rem;
    margin-left: auto;
}

.industry-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
    color: #999999;
    font-size: 0.9rem;
}

.industry-tags span {
    display: inline-block;
}

/* ロゴグリッド */
.logos-grid {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 30px;
    margin-top: 40px;
}

.logo-box {
    background: white;
    padding: 15px 30px;
    border-radius: 8px;
    border: 1px solid #eee;
    font-weight: bold;
    color: #555;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 統合システムタブ */
.integration-tabs {
    margin-top: 50px;
}

.tab-nav {
    display: flex;
    justify-content: center;
    gap: 40px;
    border-bottom: 1px solid #E0E0E0;
    margin-bottom: 40px;
    padding-bottom: 0;
}

.tab-btn {
    background: none;
    border: none;
    padding: 15px 0;
    font-size: 1rem;
    color: #666666;
    cursor: pointer;
    position: relative;
    font-family: 'Noto Sans JP', sans-serif;
    transition: color 0.3s;
}

.tab-btn:hover {
    color: #0066FF;
}

.tab-btn.active {
    color: #0066FF;
}

.tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: #0066FF;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.integration-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 150px));
    gap: 15px;
    justify-content: center;
    margin: 0 auto;
}

.integration-card {
    background: white;
    border-radius: 12px;
    padding: 25px 15px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    min-width: 120px;
}

.integration-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.integration-icon {
    font-size: 20px;
    color: #0066FF;
    margin-bottom: 15px;
}

.integration-name {
    font-size: 0.9rem;
    color: #333333;
    font-weight: 500;
}

/* デモセクション */
.demo-box {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

/* デモタブ */
.demo-tabs {
    margin-top: 50px;
}

.demo-tab-nav {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 50px;
    padding-bottom: 20px;
    border-bottom: 2px solid #ddd;
}

.demo-tab-btn {
    background: none;
    border: none;
    padding: 10px 20px;
    font-size: 1rem;
    color: #999;
    cursor: pointer;
    position: relative;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}

.demo-tab-btn:hover {
    color: #0066FF;
}

.demo-tab-btn.active {
    color: #0066FF;
    font-weight: bold;
}

.demo-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -22px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: #0066FF;
}

.demo-tab-content {
    display: none;
}

.demo-tab-content.active {
    display: block;
}

.demo-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.demo-card {
    background: white;
    padding: 40px;
    border-radius: 12px;
    border: 1px solid #ddd;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.demo-card-label {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: bold;
    letter-spacing: 2px;
    color: #16a15c;
    background: #e7f8ef;
    padding: 10px 18px;
    border-radius: 999px;
    margin-bottom: 15px;
}

.demo-card-label.experience {
    color: #0066ff;
    background: #e7f0ff;
}

.demo-card h3 {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: #333;
}

.demo-card p {
    color: #666;
    margin-bottom: 25px;
    font-size: 0.9rem;
    line-height: 1.6;
}

.demo-call-btn {
    display: block;
    background: #0066FF;
    color: white;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    text-decoration: none;
    transition: background 0.3s;
}

.demo-call-btn:hover {
    background: #0052cc;
}

.demo-call-btn span {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.demo-call-number {
    font-size: 1.5rem;
    font-weight: bold;
}

.demo-samples {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.demo-sample {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 18px 20px;
    background: #f7f9fc;
    border: 1px solid #e4eaf5;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.06);
}

.demo-play-btn {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: #0066FF;
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    transition: background 0.3s;
    box-shadow: 0 8px 18px rgba(0, 102, 255, 0.35);
}

.demo-play-btn:hover {
    background: #0052cc;
}

.demo-sample span {
    font-weight: 700;
    color: #1f2a44;
    letter-spacing: 0.01em;
}

.demo-sample:nth-child(2) {
    background: #f9fbff;
    border-color: #c9d8f5;
}

.demo-sample:nth-child(2) .demo-play-btn {
    background: #a8adba;
    box-shadow: 0 8px 18px rgba(168, 173, 186, 0.35);
}

.demo-sample:nth-child(2) .demo-play-btn:hover {
    background: #979daa;
}

.smartphone {
    width: 280px;
    height: 500px;
    background: #333;
    border-radius: 30px;
    padding: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.screen {
    width: 100%;
    height: 100%;
    background: #f0f0f0;
    border-radius: 20px;
    padding: 20px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    gap: 15px;
    font-size: 0.8rem;
}

.msg {
    padding: 10px;
    border-radius: 10px;
    max-width: 80%;
}

.msg.left {
    background: white;
    align-self: flex-start;
}

.msg.right {
    background: #dcf8c6;
    align-self: flex-end;
}

.demo-audio {
    max-width: 400px;
}

.audio-player {
    background: white;
    padding: 20px;
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 15px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    margin: 20px 0;
}

.play-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    border: none;
    cursor: pointer;
}

.progress-bar {
    flex-grow: 1;
    height: 5px;
    background: #ddd;
    border-radius: 5px;
}

/* 機能タブ */
.features-tabs {
    margin-top: 50px;
}

.features-tab-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 50px;
    padding-bottom: 20px;
    border-bottom: 2px solid #ddd;
}

.features-tab-btn {
    background: none;
    border: none;
    padding: 10px 20px;
    font-size: 0.95rem;
    color: #999;
    cursor: pointer;
    position: relative;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}

.features-tab-btn:hover {
    color: #0066FF;
}

.features-tab-btn.active {
    color: #0066FF;
    font-weight: bold;
}

.features-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -22px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: #0066FF;
}

.features-tab-content {
    display: none;
}

.features-tab-content.active {
    display: block;
}

/* 機能アイテム */
.feature-item {
    background: white;
    padding: 20px 15px;
    border-radius: 8px;
    border: 2px solid #eee;
    transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
    text-align: center;
}

.feature-item:hover {
    transform: translateY(-5px);
    border-color: #0066FF;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.feature-item i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 12px;
    display: block;
}

.feature-item h4 {
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.feature-item p {
    font-size: 0.85rem;
    color: #666;
    text-align: left;
}

/* 導入事例タブ */
.cases-tabs {
    margin-top: 50px;
}

.cases-tab-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    padding-bottom: 20px;
    border-bottom: 2px solid #ddd;
}

.cases-tab-btn {
    background: none;
    border: none;
    padding: 10px 20px;
    font-size: 0.95rem;
    color: #999;
    cursor: pointer;
    position: relative;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.3s;
}

.cases-tab-btn:hover {
    color: #0066FF;
}

.cases-tab-btn.active {
    color: #0066FF;
    font-weight: bold;
}

.cases-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -22px;
    left: 0;
    right: 0;
    height: 3px;
    background-color: #0066FF;
}

.cases-tab-content {
    display: none;
}

.cases-tab-content.active {
    display: block;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

/* 導入事例 */
.case-card {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    display: flex;
    flex-direction: row;
}

.case-img {
    width: 45%;
    height: 100%;
    min-height: 350px;
    background-color: #e8e8e8;
    object-fit: cover;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #999;
    font-size: 0.9rem;
    text-align: center;
    padding: 0;
    overflow: hidden;
}

.case-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.case-content {
    padding: 30px;
    width: 55%;
    display: flex;
    flex-direction: column;
}

.case-tag {
    display: inline-block;
    background-color: #4A7FF7;
    color: white;
    font-size: 0.8rem;
    font-weight: bold;
    padding: 6px 16px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.case-content h4 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
}

.case-content p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
    flex-grow: 1;
}

.case-metrics {
    display: flex;
    gap: 30px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.metric {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.metric-label {
    font-size: 0.8rem;
    color: #999;
}

.metric-value {
    font-size: 1.2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.case-content {
    padding: 25px;
}

.text-link {
    color: var(--primary-color);
    font-weight: bold;
    display: inline-block;
    margin-top: 10px;
}

/* 5ステップ */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
    margin-top: 40px;
}

.step-card {
    background: white;
    padding: 30px 20px;
    border-radius: 12px;
    position: relative;
    text-align: center;
}

.step-card h4 {
    font-size: 1rem;
    margin-bottom: 15px;
    color: #333;
}

.step-card p {
    font-size: 0.85rem;
    color: #666;
    line-height: 1.6;
}

.step-num {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
}

.step-icon {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 15px;
    display: block;
}

.steps-container {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.step {
    text-align: center;
    width: 100px;
}

.step-line {
    flex-grow: 1;
    max-width: 50px;
    height: 2px;
    background: #ddd;
    display: none; /* スマホでは非表示 */
}

@media (min-width: 768px) {
    .step-line { display: block; }
    .steps-grid {
        grid-template-columns: repeat(5, 1fr);
    }
}

@media (max-width: 1024px) {
    .steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .steps-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 料金プラン */
.pricing-wrapper {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.price-card {
    background: white;
    padding: 30px;
    border-radius: var(--border-radius);
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    width: 300px;
    position: relative;
    border: 1px solid #eee;
}

.price-card.popular {
    border: 2px solid var(--primary-color);
    transform: scale(1.05);
}

.badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary-color);
    color: white;
    padding: 5px 20px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
}

/* 料金プランタブ */
.pricing-tabs {
    margin-top: 50px;
}

.pricing-tab-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    padding: 15px;
    background: white;
    border: 1px solid #E0E0E0;
    border-radius: 50px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.pricing-tab-btn {
    background: none;
    border: none;
    padding: 10px 25px;
    font-size: 0.95rem;
    color: #999;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 500;
    transition: color 0.3s;
    border-radius: 50px;
}

.pricing-tab-btn:hover {
    color: #0066FF;
}

.pricing-tab-btn.active {
    color: #0066FF;
    font-weight: bold;
}

.pricing-tab-content {
    display: none;
}

.pricing-tab-content.active {
    display: block;
}

.pricing-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 30px;
    margin-top: 40px;
    align-items: start;
}

.pricing-grid .price-card,
.pricing-grid .price-options-wrapper {
    width: 100%;
    box-sizing: border-box;
}

.price-options-wrapper {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.price-cta-group {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 24px;
}

.price-card {
    background: white;
    padding: 30px;
    border-radius: 24px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    position: relative;
    box-sizing: border-box;
}

.price-card.large {
    padding: 40px;
}

.price-badge {
    display: inline-block;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    margin-bottom: 15px;
}

.price-card h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: #333;
}

.price-section-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.price-item {
    flex: 1;
}

.price-section {
    margin-bottom: 30px;
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.price-label {
    font-size: 0.9rem;
    color: #999;
    font-weight: 500;
}

.price-value {
    font-size: 2.5rem;
    font-weight: bold;
    color: #333;
}

.price-unit {
    font-size: 0.7rem;
    color: #999;
    margin-left: 5px;
}

.price-note {
    font-size: 0.8rem;
    color: var(--primary-color);
    margin-top: 5px;
}

.price-features {
    padding: 25px 0 0 0;
    margin-top: 30px;
    border-top: 1px solid #E0E0E0;
}

.price-features h4 {
    font-size: 0.95rem;
    margin-bottom: 15px;
    color: #333;
}

.price-features ul {
    list-style: none;
    padding: 0;
}

.price-features ul.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px 20px;
}

.price-features li {
    font-size: 0.9rem;
    color: #555;
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.price-features i {
    color: var(--primary-color);
}

.price-card-options {
    background: #f0f6ff;
    padding: 30px;
    border-radius: 24px;
    box-sizing: border-box;
}

.options-header {
    font-size: 0.95rem;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.options-header i {
    color: var(--primary-color);
}

.options-list {
    margin-bottom: 20px;
}

.option-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #555;
    padding: 12px 0;
    border-bottom: 1px solid #ddd;
}

.option-item:last-child {
    border-bottom: none;
}

.option-price {
    font-weight: bold;
    color: #333;
}

.pricing-notes {
    margin-top: 40px;
    text-align: center;
    color: #999999;
    font-size: 0.9rem;
    line-height: 1.8;
}

.pricing-notes p {
    margin: 5px 0;
}

.price span {
    font-size: 2.5rem;
    font-weight: bold;
}

.price-list li {
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* FAQ */
.faq-tabs {
    margin-top: 50px;
}

.faq-tab-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 50px;
    padding: 15px;
    background: white;
    border: 1px solid #E0E0E0;
    border-radius: 50px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.faq-tab-btn {
    background: none;
    border: none;
    padding: 10px 25px;
    font-size: 0.95rem;
    color: #999;
    cursor: pointer;
    font-family: 'Noto Sans JP', sans-serif;
    font-weight: 500;
    transition: color 0.3s;
    border-radius: 50px;
}

.faq-tab-btn:hover {
    color: #0066FF;
}

.faq-tab-btn.active {
    color: #0066FF;
    font-weight: bold;
}

.faq-tab-content {
    display: none;
}

.faq-tab-content.active {
    display: block;
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid #eee;
}

.faq-question {
    padding: 20px;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    padding: 0 20px;
    color: var(--gray-color);
}

.faq-answer.active {
    max-height: 200px; /* 十分な高さ */
    padding-bottom: 20px;
}

.toggle-icon {
    font-size: 1.5rem;
    transition: 0.3s;
}

.faq-item.open .toggle-icon {
    transform: rotate(45deg);
}

/* フッター */
.footer {
    background: var(--primary-color);
    color: white;
    padding-top: 80px;
}

.cta-section {
    text-align: center;
    padding-bottom: 80px;
}

.cta-section h2 {
    font-size: 2.5rem;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.cta-btn-primary {
    background: #2d63ff;
    color: #ffffff;
    border: 2px solid #dcdcdc;
    padding: 16px 36px;
    border-radius: 999px;
    font-weight: 700;
    min-width: 260px;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.cta-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.18);
}

.cta-btn-outline {
    background: #f0f0f0;
    color: #333333;
    border: 2px solid #dcdcdc;
    padding: 16px 32px;
    border-radius: 999px;
    font-weight: 700;
    min-width: 260px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.cta-btn-outline:hover {
    border-color: #cfcfcf;
    background: #e6e6e6;
}

.cta-note {
    margin-top: 24px;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
}

.cta-form {
    background: white;
    display: inline-flex;
    padding: 8px;
    border-radius: 25px;
    margin-top: 20px;
    gap: 8px;
}

.cta-form input {
    border: none;
    padding: 16px 28px;
    outline: none;
    width: 340px;
    font-size: 1rem;
}

.footer-links {
    background: linear-gradient(135deg, #001a4d 0%, #002d80 100%);
    border-top: 1px solid rgba(255,255,255,0.2);
    padding: 40px 20px;
    text-align: center;
    font-size: 0.9rem;
}

.copyright {
    color: #8A92A8;
}

/* レスポンシブ調整 */
@media (max-width: 768px) {
    /* 基本設定 */
    .container {
        padding: 0 15px;
    }

    html {
        font-size: 13px;
    }

    /* ヘッダー・ナビゲーション */
    .header {
        padding: 10px 0;
        height: auto;
    }

    .header__container {
        padding: 12px 15px;
    }

    .logo {
        font-size: 1.2rem;
        font-weight: 700;
    }

    .nav {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
    }

    .nav .btn {
        padding: 8px 16px;
        font-size: 0.8rem;
        white-space: nowrap;
    }

    .nav .btn--primary {
        padding: 8px 14px;
    }

    .nav .btn--gray {
        padding: 8px 14px;
    }

    /* ヒーロー */
    .hero {
        padding: 120px 0 100px;
        text-align: center;
        background: linear-gradient(180deg, #F0F6FF 0%, #FFFFFF 100%);
    }

    .hero__content {
        padding: 0 20px;
    }

    .hero__tag {
        display: inline-block;
        background: #E0EAFF;
        color: var(--primary-color);
        padding: 6px 16px;
        border-radius: 20px;
        font-size: 0.95rem;
        margin-bottom: 15px;
        font-weight: bold;
    }

    .hero__title {
        font-size: 1.6rem;
        line-height: 1.2;
        margin-bottom: 12px;
    }

    .hero__title-main {
        font-size: 7.0rem;
        color: #0066FF;
        display: block;
        line-height: 1;
        margin-bottom: -0.05em;
    }

    .hero__title-sub {
        color: #333333;
        display: block;
        font-size: 4.0rem;
        margin-top: 0.05em;
        font-weight: 600;
    }

    .hero__desc {
        font-size: 1.0rem;
        color: var(--gray-color);
        margin-bottom: 40px;
        line-height: 1.6;
    }

    .hero__buttons {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 8px;
        width: 100%;
    }

    .hero__buttons .btn {
        padding: 12px 20px;
        font-size: 1rem;
        width: 100%;
        box-sizing: border-box;
        min-width: auto;
        white-space: nowrap;
    }

    .btn--lg {
        padding: 22px 96px;
        font-size: 1.1rem;
        width: auto;
        box-sizing: border-box;
    }

    /* セクションタイトル */
    .section {
        padding: 40px 15px;
    }

    .section__title {
        font-size: 1.5rem;
        margin-bottom: 12px;
    }

    .section__desc {
        font-size: 0.85rem;
        margin-bottom: 30px;
    }

    .section__tag {
        font-size: 0.65rem;
        padding: 3px 10px;
    }

    /* グリッドレイアウト */
    .cards-grid,
    .grid-3,
    .grid-4,
    .grid-2 {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .card {
        aspect-ratio: auto;
        max-width: 90%;
        margin: 0 auto;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .integration-cards {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .integration-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

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

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

    /* タブナビゲーション */
    .tab-nav,
    .pricing-tab-nav,
    .faq-tab-nav,
    .demo-tab-nav {
        gap: 10px;
        padding: 10px;
        margin-bottom: 30px;
        width: 100%;
    }

    .tab-btn,
    .pricing-tab-btn,
    .faq-tab-btn,
    .demo-tab-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    /* 料金プラン */
    .price-card {
        padding: 20px 15px;
    }

    .price-card.popular {
        transform: scale(1);
    }

    .price-value {
        font-size: 2rem;
    }

    .price-features {
        gap: 8px;
        font-size: 0.9rem;
    }

    /* FAQセクション */
    .faq-container {
        max-width: 100%;
        padding: 0;
    }

    .faq-item {
        margin-bottom: 10px;
        padding: 0;
    }

    .faq-question {
        font-size: 0.95rem;
        padding: 12px;
    }

    .faq-answer {
        font-size: 0.9rem;
        padding: 12px;
    }

    /* フッター */
    .cta-section {
        padding: 40px 20px;
    }

    .cta-section h2 {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }

    .cta-actions {
        flex-direction: column;
        gap: 14px;
    }

    .cta-btn-primary,
    .cta-btn-outline {
        width: 100%;
        min-width: auto;
        padding: 14px 20px;
    }

    /* フッターリンク */
    .footer-links {
        padding: 24px 15px;
        font-size: 0.8rem;
    }

    .copyright {
        font-size: 0.8rem;
    }

    /* 導入事例 */
    .case-card {
        flex-direction: column;
        width: 90%;
        max-width: 340px;
        margin: 0 auto;
        box-sizing: border-box;
        transition: transform 0.3s, box-shadow 0.3s;
    }

    .case-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    }

    .case-img {
        width: 100%;
        height: 150px;
    }

    .case-content {
        width: 100%;
        padding: 15px;
        box-sizing: border-box;
    }

    .case-content h4 {
        font-size: 0.95rem;
        margin-bottom: 10px;
    }

    .case-content p {
        font-size: 0.75rem;
        line-height: 1.5;
    }

    .case-tag {
        font-size: 0.7rem;
        margin-bottom: 8px;
    }

    .case-metrics {
        gap: 15px;
        padding-top: 15px;
    }

    .metric {
        font-size: 0.75rem;
    }

    /* カード */
    .card {
        padding: 15px;
    }

    .card__title {
        font-size: 1.1rem;
    }

    .card__description {
        font-size: 0.85rem;
    }

    /* 機能セクション */
    .feature-content {
        flex-direction: column;
    }

    .feature-image {
        width: 100%;
        height: auto;
    }

    /* その他 */
    .step-line {
        display: none;
    }
}

/* タブレット向けレスポンシブ (768px ~ 1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
    .container {
        padding: 0 20px;
    }

    /* ヘッダー */
    .header__container {
        padding: 12px 20px;
    }

    .logo {
        font-size: 1.3rem;
    }

    .nav {
        gap: 15px;
    }

    .nav .btn {
        padding: 8px 18px;
        font-size: 0.85rem;
    }

    /* ヒーロー */
    .hero {
        padding: 80px 0 60px;
    }

    .hero__tag {
        font-size: 0.9rem;
    }

    .hero__title {
        font-size: 2.2rem;
    }

    .hero__title-main {
        font-size: 6.0rem;
    }

    .hero__title-sub {
        font-size: 3.5rem;
    }

    .hero__desc {
        font-size: 0.95rem;
        margin-bottom: 30px;
    }

    .hero__buttons {
        flex-direction: column;
        gap: 15px;
    }

    .hero__buttons .btn {
        width: 100%;
        padding: 12px 28px;
        font-size: 0.9rem;
        margin: 0 auto;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    /* セクション */
    .section {
        padding: 60px 20px;
    }

    .section__title {
        font-size: 2rem;
    }

    /* カード */
    .card {
        aspect-ratio: auto;
    }

    /* グリッド */
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
        gap: 40px;
    }

    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }
}