/* ----------------------------------------
リセット・ベーススタイル
---------------------------------------- */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

.pconly{
    display: block;
}
.sponly{
    display: none;
}

body {
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background-color: var(--color-bg-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

ul {
    list-style: none;
}

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

/* ----------------------------------------
カラー変数 (高級感・引き締め)
---------------------------------------- */
:root {
    --color-primary: #0f172a;
    --color-primary-light: #1e293b;
    --color-accent: #1d4ed8;
    --color-accent-light: #2563eb;
    --color-bg-white: #ffffff;
    --color-bg-base: #f8fbff;
    --color-bg-blue-light: #eaf2ff;
    --color-text-primary: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;
    --color-border: #cbd5e1;
    --color-border-light: #e2e8f0;
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 40px;
    --space-3xl: 56px;
    --space-4xl: 72px;
}

/* ----------------------------------------
共通コンポーネント
---------------------------------------- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 28px;
    font-size: 15px;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    white-space: nowrap;
}

.btn-primary,
.btn-accent {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: #ffffff;
    box-shadow: 0 4px 14px 0 rgba(29, 78, 216, 0.3);
}

.btn-primary:hover,
.btn-accent:hover {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-accent-light) 100%);
    box-shadow: 0 6px 20px 0 rgba(29, 78, 216, 0.4);
    transform: translateY(-1px);
}

.btn-outline {
    background-color: var(--color-bg-white);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 4px rgba(15, 23, 42, 0.05);
}

.btn-outline:hover {
    border-color: var(--color-text-secondary);
    background-color: var(--color-bg-base);
}

/* ----------------------------------------
ヘッダー
---------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.6);
    transition: box-shadow 0.3s ease;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background-color: var(--color-accent-light);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 20px;
    flex-shrink: 0;
}

.logo-text {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-size: 20px;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: -0.02em;
}

.logo-sub {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-muted);
}

.nav-desktop {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.nav-link,
.login-link {
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    transition: color 0.2s ease;
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 40px;
}

.header .btn {
    padding: 10px 20px;
    font-size: 13px;
}

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

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-primary);
    transition: 0.3s;
}

.mobile-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.1);
}

.mobile-menu.active {
    display: block;
}

.mobile-menu .nav-links {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.mobile-menu .nav-actions {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-sm);
}

/* ----------------------------------------
ヒーローセクション
---------------------------------------- */
.hero {
    padding-top: 130px;
    padding-bottom: var(--space-3xl);
    background: radial-gradient(circle at 80% 0%, var(--color-bg-blue-light) 0%, var(--color-bg-base) 60%, #ffffff 100%);
    overflow: hidden;
}

.hero-inner {
    display: flex;
    align-items: center;
    position: relative;
}

.hero-content {
    flex: 0 0 50%;
    padding-right: var(--space-xl);
    z-index: 2;
}

.hero-eyecatch {
    font-size: 14px;
    font-weight: 700;
    color: var(--color-accent);
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.hero-title {
    font-size: 50px;
    font-weight: 900;
    letter-spacing: -0.04em;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.hero-description {
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.hero-features {
    display: flex;
    gap: var(--space-lg);
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.hero-feature svg {
    width: 18px;
    height: 18px;
    color: var(--color-success);
}

.hero-preview {
    flex: 0 0 50%;
    position: relative;
    z-index: 1;
    left: -60px;
}

.hero-dashboard-image {
    width: 135%;
    max-width: none;
    border-radius: 12px;
    transform: translateX(5%);
    box-shadow:
        0 4px 6px -1px rgba(15, 23, 42, 0.05),
        0 20px 40px -5px rgba(15, 23, 42, 0.15),
        0 30px 60px -15px rgba(29, 78, 216, 0.15),
        0 0 0 1px rgba(255, 255, 255, 0.8) inset;
    border: 1px solid rgba(226, 232, 240, 0.8);
}

/* ----------------------------------------
機能セクション
---------------------------------------- */
.features {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-white);
}

.section-title {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.02em;
    text-align: center;
    color: var(--color-primary);
    margin-bottom: var(--space-3xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
}

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

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    background-color: var(--color-bg-blue-light);
    border-radius: 16px;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
}

.feature-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.feature-description {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

/* ----------------------------------------
料金プラン
---------------------------------------- */
.pricing {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-base);
}

.section-description {
    text-align: center;
    color: var(--color-text-secondary);
    margin-top: -24px;
    margin-bottom: var(--space-3xl);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.pricing-card {
    position: relative;
    background: #ffffff;
    border: 1px solid var(--color-border-light);
    border-radius: 20px;
    padding: var(--space-2xl);
    text-align: center;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(15, 23, 42, 0.10);
}

.pricing-card.featured {
    border: 2px solid var(--color-accent);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-accent);
    color: #ffffff;
    font-size: 12px;
    font-weight: 700;
    padding: 6px 12px;
    border-radius: 999px;
}

.pricing-plan {
    font-size: 22px;
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.pricing-price {
    font-size: 42px;
    font-weight: 900;
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
}

.pricing-price span {
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.pricing-features li {
    padding: 10px 0;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border-light);
}

.pricing-features li:last-child {
    border-bottom: none;
}


/* ----------------------------------------
導入の流れ
---------------------------------------- */
.flow {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-white);
}

.flow-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    position: relative;
    margin-top: var(--space-2xl);
}

/* PC向けの繋ぎ線 */
.flow-grid::before {
    content: '';
    position: absolute;
    top: 32px;
    left: 15%;
    right: 15%;
    height: 2px;
    background: var(--color-border-light);
    z-index: 1;
}

.flow-step {
    position: relative;
    z-index: 2;
    text-align: center;
}

.flow-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: #ffffff;
    font-size: 24px;
    font-weight: 800;
    border-radius: 50%;
    /* 繋ぎ線を隠すための太い白枠 */
    box-shadow: 0 0 0 8px var(--color-bg-white);
}

.flow-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.flow-description {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-secondary);
    padding: 0 var(--space-md);
}

/* ----------------------------------------
よくある質問
---------------------------------------- */
.faq {
    padding: var(--space-4xl) 0 0;
    background-color: var(--color-bg-base);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.faq-item {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border-light);
    border-radius: 12px;
    transition: box-shadow 0.2s ease;
}

.faq-item:hover {
    box-shadow: 0 4px 12px rgba(15, 23, 42, 0.05);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    font-size: 16px;
    font-weight: 700;
    color: var(--color-primary);
    cursor: pointer;
    list-style: none; /* デフォルトのマーカーを消す */
}

/* Safari用のデフォルトマーカー消去 */
.faq-question::-webkit-details-marker {
    display: none;
}

.faq-icon {
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    transition: transform 0.3s ease;
    flex-shrink: 0;
}

/* アコーディオンが開いた時のアイコン回転 */
.faq-item[open] .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 var(--space-lg) var(--space-lg);
    font-size: 14px;
    line-height: 1.7;
    color: var(--color-text-secondary);
}

/* ----------------------------------------
CTAセクション
---------------------------------------- */
.cta {
    padding: var(--space-4xl) 0;
    background-color: var(--color-bg-base);
}

.cta-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-xl);
    padding: var(--space-3xl);
    background-color: var(--color-bg-white);
    border-radius: 20px;
    border: 1px solid var(--color-border-light);
    box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.08);
}

.cta-content {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.cta-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background-color: var(--color-bg-blue-light);
    border-radius: 50%;
    flex-shrink: 0;
}

.cta-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
}

.cta-title {
    font-size: 24px;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.cta-description {
    font-size: 15px;
    color: var(--color-text-secondary);
}

.cta .btn {
    padding: 16px 36px;
    font-size: 16px;
    flex-shrink: 0;
}

/* ----------------------------------------
フッター
---------------------------------------- */
.footer {
    padding: var(--space-2xl) 0;
    background-color: var(--color-bg-white);
    border-top: 1px solid var(--color-border-light);
}

.footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer-logo {
    font-size: 18px;
    font-weight: 800;
    color: var(--color-primary);
}

.footer-logo .logo-sub {
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-muted);
}

.footer-links {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.footer-link {
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: 0.2s;
}

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

.footer-copyright {
    font-size: 12px;
    color: var(--color-text-muted);
}

/* ----------------------------------------
レスポンシブ
---------------------------------------- */
@media (max-width: 1024px) {
    .hero-inner {
        flex-direction: column;
    }
    .hero-content {
        flex: 0 0 100%;
        padding-right: 0;
        text-align: center;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-features {
        justify-content: center;
    }
    .hero-preview {
        flex: 0 0 100%;
        width: 100%;
        margin-top: var(--space-2xl);
        left: 0;
    }
    .hero-dashboard-image {
        width: 100%;
        transform: none;
        margin: 0 auto;
    }
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .pconly{
        display: none;
    }
    .sponly{
        display: block;
    } 
    .nav-desktop {
        display: none;
    }
    .menu-toggle {
        display: flex;
    }
    .hero {
        padding-top: 100px;
        padding-bottom: var(--space-2xl);
    }
    .hero-title {
        font-size: 36px;
    }
    .hero-buttons {
        flex-direction: column;
    }
    .hero-buttons .btn {
        width: 100%;
    }
    .hero-features {
        flex-direction: column;
        gap: var(--space-sm);
        align-items: center;
    }
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    /* Flow のレスポンシブ設定 */
    .flow-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    .flow-grid::before {
        display: none;
    }
    .flow-description {
        padding: 0;
    }
    .cta-inner {
        flex-direction: column;
        text-align: center;
        padding: var(--space-xl);
    }
    .cta-content {
        flex-direction: column;
    }
    .cta .btn {
        width: 100%;
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 30px;
    }
    .section-title {
        font-size: 26px;
    }
}


/* ----------------------------------------
ドキュメントページ（プライバシーポリシー・利用規約など）
---------------------------------------- */
.document-page {
    padding-top: 72px; /* ヘッダーの高さ分下げる */
    padding-bottom: var(--space-4xl);
    background-color: var(--color-bg-base);
    min-height: 100vh;
}

.document-container {
    max-width: 800px; /* テキストが読みやすい幅に制限 */
}

.document-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
    color: #ffffff;
    padding: var(--space-3xl) 0;
    margin-bottom: var(--space-3xl);
    text-align: center;
}

.document-title {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: var(--space-sm);
    letter-spacing: 0.02em;
}

.document-date {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.document-content {
    background-color: #ffffff;
    padding: var(--space-3xl);
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
    border: 1px solid var(--color-border-light);
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.document-content h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-primary);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
    padding-bottom: var(--space-sm);
    border-bottom: 2px solid var(--color-bg-blue-light);
}

.document-content h2:first-child {
    margin-top: 0;
}

.document-content p {
    margin-bottom: var(--space-md);
}

.document-content ul,
.document-content ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

.document-content li {
    margin-bottom: var(--space-xs);
}

@media (max-width: 768px) {
    .document-content {
        padding: var(--space-xl) var(--space-md);
    }
    .document-title {
        font-size: 24px;
    }
}