:root {
    --bg-color: #fafbfc;
    --surface-color: #ffffff;
    --surface-alt: #f0f4f8;
    --surface-hover: #e8eef4;
    --text-primary: #1a2b3c;
    --text-secondary: #5a6d7e;
    --text-light: #8a9bac;
    --accent-primary: #00C300;
    --accent-secondary: #00a000;
    --accent-tertiary: #2d6cdf;
    --accent-gradient: linear-gradient(135deg, #00C300 0%, #00a000 50%, #008800 100%);
    --accent-gradient-soft: linear-gradient(135deg, rgba(0, 195, 0, 0.1) 0%, rgba(0, 160, 0, 0.05) 100%);
    --accent-glow: 0 8px 32px rgba(0, 195, 0, 0.25);
    --communication-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --warm-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --border-color: #e1e8ef;
    --border-light: #f0f4f8;
    --shadow-sm: 0 2px 8px rgba(26, 43, 60, 0.06);
    --shadow-md: 0 8px 24px rgba(26, 43, 60, 0.08);
    --shadow-lg: 0 16px 48px rgba(26, 43, 60, 0.12);
    --font-main: 'Sora', 'Noto Sans JP', sans-serif;
    --container-width: 1200px;
    --header-height: 80px;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.8;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.4;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline;
}

.highlight-text {
    color: var(--accent-primary);
    font-weight: 700;
}

/* Layout Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 120px 0;
    position: relative;
}

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

.sp-hide {
    display: inline;
}

/* Header */
.header {
    height: var(--header-height);
    display: flex;
    align-items: center;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(250, 251, 252, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-light);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.logo-sub {
    font-weight: 400;
    color: var(--text-secondary);
}

.line-brand {
    font-weight: 700;
    color: var(--accent-primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
    border: none;
    line-height: 1;
}

.btn-sm {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.btn-lg {
    padding: 20px 40px;
    font-size: 1.1rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(0, 195, 0, 0.35);
}

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

.btn-secondary:hover {
    background: var(--surface-hover);
    transform: translateY(-3px);
}

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

.btn-outline:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-3px);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, #ffffff 0%, var(--bg-color) 100%);
}

.hero-bg-pattern {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(circle at 20% 20%, rgba(0, 195, 0, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(45, 108, 223, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(0, 195, 0, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    padding: 40px 0;
}

.hero-catch {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
    margin-bottom: 16px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 16px;
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2vw, 1.75rem);
    color: var(--text-primary);
    margin-bottom: 24px;
    font-weight: 500;
}

.hero-desc {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.9;
}

.hero-cta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Chat Mockup */
.chat-mockup {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    max-width: 380px;
    margin: 0 auto;
    border: 1px solid var(--border-light);
}

.chat-header {
    background: var(--accent-gradient);
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.chat-avatar {
    width: 48px;
    height: 48px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.chat-info {
    display: flex;
    flex-direction: column;
}

.chat-name {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

.chat-status {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.85rem;
}

.chat-messages {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    background: #f7f9fb;
}

.message {
    max-width: 85%;
    padding: 14px 18px;
    border-radius: 18px;
    font-size: 0.95rem;
    line-height: 1.6;
    animation: messageSlide 0.6s ease forwards;
}

.message.bot {
    background: white;
    border: 1px solid var(--border-light);
    align-self: flex-start;
    border-bottom-left-radius: 6px;
}

.message.user {
    background: var(--accent-primary);
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 6px;
}

.message p {
    margin-bottom: 4px;
}

.message p:last-child {
    margin-bottom: 0;
}

.message-highlight {
    color: var(--accent-primary);
    font-weight: 600;
}

.message-small {
    font-size: 0.85rem;
    color: var(--text-light);
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Section Headers */
.section-header {
    margin-bottom: 64px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: 16px;
    line-height: 1.3;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
}

/* Values Section */
.values {
    background: white;
}

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

.value-card {
    background: var(--surface-alt);
    padding: 48px;
    border-radius: var(--radius-xl);
    position: relative;
    overflow: hidden;
}

.value-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.value-card.customer::before {
    background: var(--communication-gradient);
}

.value-card.business::before {
    background: var(--accent-gradient);
}

.value-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.value-card h3 {
    font-size: 1.4rem;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.value-list {
    list-style: none;
}

.value-list li {
    margin-bottom: 20px;
    padding-left: 0;
}

.value-list li:last-child {
    margin-bottom: 0;
}

.value-list strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 6px;
    color: var(--text-primary);
}

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

/* Challenges Section */
.challenges {
    background: var(--bg-color);
}

.challenges-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.challenge-card {
    background: white;
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid transparent;
}

.challenge-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.challenge-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: block;
}

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

.challenge-card strong {
    color: var(--text-primary);
    font-size: 1.05rem;
}

/* Features Section */
.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--surface-alt);
    padding: 40px;
    border-radius: var(--radius-xl);
    transition: all 0.4s ease;
    border: 1px solid transparent;
    position: relative;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.feature-card.main {
    grid-column: 1 / -1;
    background: linear-gradient(135deg, rgba(0, 195, 0, 0.05) 0%, rgba(0, 160, 0, 0.02) 100%);
    border: 1px solid rgba(0, 195, 0, 0.2);
}

.feature-badge {
    display: inline-block;
    background: var(--accent-gradient);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.4rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.feature-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
    flex-wrap: wrap;
}

.flow-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px 24px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.flow-icon {
    font-size: 2rem;
}

.flow-item span:last-child {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.flow-arrow {
    font-size: 1.5rem;
    color: var(--accent-primary);
    font-weight: bold;
}

/* Customize Section */
.customize {
    background: var(--bg-color);
}

.customize-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.customize-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid var(--border-light);
}

.customize-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.customize-icon {
    font-size: 3rem;
    margin-bottom: 24px;
    display: block;
}

.customize-card h3 {
    font-size: 1.25rem;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.customize-card p {
    color: var(--text-secondary);
    line-height: 1.8;
}

/* Synergy Section */
.synergy {
    background: white;
}

.synergy-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.synergy-card {
    background: var(--surface-alt);
    padding: 36px;
    border-radius: var(--radius-xl);
    transition: all 0.4s ease;
    border: 2px solid transparent;
}

.synergy-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.synergy-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.synergy-plus {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.25rem;
}

.synergy-card h3 {
    font-size: 1.2rem;
    color: var(--text-primary);
}

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

/* Target Section */
.target {
    background: var(--bg-color);
}

.target-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.target-card {
    background: white;
    padding: 40px;
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all 0.4s ease;
    border: 1px solid var(--border-light);
}

.target-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.target-icon {
    font-size: 3rem;
    margin-bottom: 20px;
    display: block;
}

.target-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.target-examples {
    color: var(--accent-primary);
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
}

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

/* Flow Section */
.flow {
    background: white;
}

.flow-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.flow-step {
    background: var(--surface-alt);
    padding: 36px;
    border-radius: var(--radius-lg);
    position: relative;
    text-align: center;
    transition: all 0.4s ease;
}

.flow-step:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.step-number {
    width: 56px;
    height: 56px;
    background: var(--accent-gradient);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    margin: 0 auto 20px;
}

.flow-step h3 {
    font-size: 1.2rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

/* Notes Section */
.notes {
    background: var(--bg-color);
}

.notes-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.note-card {
    background: white;
    padding: 36px;
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--accent-primary);
    transition: all 0.4s ease;
}

.note-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.note-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    display: block;
}

.note-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
    color: var(--text-primary);
}

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

/* Footer */
.footer {
    padding: 120px 0 48px;
    text-align: center;
    background: linear-gradient(180deg, #1a2b3c 0%, #0f1a25 100%);
    color: white;
}

.footer-title {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-bottom: 20px;
}

.footer-desc {
    color: #94a3b8;
    margin-bottom: 48px;
    font-size: 1.1rem;
    line-height: 1.8;
}

.footer-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-bottom: 100px;
    flex-wrap: wrap;
}

.company-info {
    color: #64748b;
    font-size: 0.9rem;
    border-top: 1px solid #2d3e4f;
    padding-top: 48px;
}

/* Animations */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

    .hero-cta {
        justify-content: center;
    }

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

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

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

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

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

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

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

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

@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }

    .sp-hide {
        display: none;
    }

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

    .flow-steps {
        grid-template-columns: 1fr;
    }

    .feature-flow {
        flex-direction: column;
    }

    .flow-arrow {
        transform: rotate(90deg);
    }

    .value-card {
        padding: 32px;
    }

    .chat-mockup {
        max-width: 100%;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .btn-lg {
        padding: 16px 28px;
        font-size: 1rem;
    }

    .footer-buttons {
        flex-direction: column;
        align-items: center;
    }
}