/* 
    officekit - Soft, Natural, White/Ecru/Green theme
*/
:root {
    --bg-main: #fcfdfe;         /* Very pale blue-white */
    --bg-surface: #ffffff;      /* White */
    --bg-alt: #f4f7fa;          /* Light blue-grey for alternate sections */
    --bg-light-accent: #fff9f2; /* Very pale orange for concept/contact */
    
    --text-main: #334155;       /* Slate dark gray */
    --text-muted: #64748b;      /* Lighter gray for secondary text */
    
    --accent-primary: #1c5c9e;    /* Brand Blue */
    --accent-primary-hover: #154b83;
    --accent-secondary: #ff8c00;  /* Brand Orange */
    --accent-secondary-hover: #e57e00;
    --accent-border: #e2e8f0;   /* Light border color */

    --font-sans: 'Noto Sans JP', system-ui, -apple-system, sans-serif;
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 9999px;
    
    --shadow-soft: 0 8px 30px rgba(0, 0, 0, 0.03);
    --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.06);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.8;
    overflow-x: hidden;
    letter-spacing: 0.04em;
    -webkit-font-smoothing: antialiased;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 5%;
}

.pc-only {
    display: block;
}

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

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

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

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

.bg-primary {
    background-color: var(--accent-primary);
}

/* Typography Variables */
.section-title {
    font-size: 2rem;
    font-weight: 500;
    line-height: 1.5;
    margin-bottom: 2rem;
    color: var(--text-main);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius-pill);
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all 0.3s ease;
    text-decoration: none;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: var(--accent-primary);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--accent-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(28, 92, 158, 0.2);
}

.btn-secondary {
    background: #ffffff;
    color: var(--text-main);
    border: 1px solid var(--accent-border);
}

.btn-secondary:hover {
    background: var(--bg-alt);
    border-color: #d0d8d4;
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.05rem;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(250, 249, 248, 0.9);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: all 0.4s ease;
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    height: 70px;
    background: rgba(255, 255, 255, 0.98);
    border-bottom: 1px solid var(--accent-border);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-main);
    letter-spacing: 0.08em;
}

.logo-image {
    display: block;
    height: 32px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    color: var(--text-muted);
    font-size: 0.95rem;
}

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

/* Sections Common */
.section-padding {
    padding: 120px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    color: var(--accent-primary);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    margin-bottom: 16px;
}

.section-lead {
    font-size: 1.25rem;
    line-height: 1.8;
}

.section-lead strong {
    font-weight: 500;
    color: var(--accent-primary);
}

/* 1. Hero Section */
.hero {
    padding: 200px 0 120px;
    text-align: center;
    background: var(--bg-main);
}

.hero-eyecatch {
    display: inline-block;
    color: var(--accent-secondary);
    background: var(--bg-light-accent);
    padding: 8px 20px;
    border-radius: var(--radius-pill);
    font-size: 0.9rem;
    margin-bottom: 32px;
    letter-spacing: 0.05em;
}

.hero-title {
    font-size: 3rem;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 32px;
    color: var(--text-main);
}

.text-highlight {
    position: relative;
    display: inline-block;
    z-index: 1;
}

.text-highlight::after {
    content: '';
    position: absolute;
    bottom: 8px;
    left: 0;
    width: 100%;
    height: 12px;
    background: rgba(255, 140, 0, 0.2);
    z-index: -1;
    border-radius: 4px;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    line-height: 2;
    margin-bottom: 48px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
}

/* Common List Style (Check List) */
.check-list li {
    position: relative;
    padding-left: 32px;
    margin-bottom: 20px;
    font-size: 1.1rem;
    line-height: 1.6;
}

.check-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 6px;
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%231c5c9e' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'%3E%3C/polyline%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

/* 2. Problems Section */
.problems-content {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    padding: 60px;
    box-shadow: var(--shadow-soft);
    max-width: 800px;
    margin: 0 auto;
}

.problems-summary {
    margin-top: 48px;
    padding-top: 40px;
    border-top: 1px solid var(--accent-border);
    text-align: center;
    font-size: 1.15rem;
    font-weight: 500;
    color: var(--accent-primary);
    line-height: 1.8;
}

/* 3. Features Section */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background: var(--bg-surface);
    padding: 48px 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    text-align: center;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

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

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--accent-primary);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 16px;
}

.feature-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* 4. Concept Section */
.concept-container {
    max-width: 800px;
    text-align: center;
}

.concept-title {
    font-size: 2.25rem;
    margin-bottom: 40px;
}

.concept-text {
    font-size: 1.15rem;
    line-height: 2.2;
}

.concept-text p {
    margin-bottom: 24px;
}

/* 5. Services Section */
.services-list {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.service-row {
    display: flex;
    align-items: center;
    background: var(--bg-surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.service-number {
    font-size: 2.5rem;
    font-weight: 400;
    opacity: 0.5;
    margin-right: 48px;
    font-family: serif; /* Adds a touch of elegance */
}

.service-title {
    font-size: 1.35rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.service-desc {
    color: var(--text-muted);
    line-height: 1.7;
}

/* 6. Target Section */
.target-container {
    max-width: 800px;
}

.target-title {
    text-align: center;
    margin-bottom: 48px;
}

.target-list {
    background: var(--bg-surface);
    padding: 48px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
}

.target-list li {
    margin-bottom: 24px;
}
.target-list li:last-child {
    margin-bottom: 0;
}

/* 7. Stance Section */
.stance-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.stance-card {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    background: var(--bg-surface);
    padding: 40px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--accent-border);
}

.stance-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-top: 8px;
    flex-shrink: 0;
}

.stance-card p {
    font-size: 1.1rem;
    line-height: 1.6;
    font-weight: 500;
}

/* 8. Contact Section */
.contact-container {
    max-width: 800px;
}

.contact-box {
    background: var(--bg-surface);
    padding: 80px 60px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-soft);
}

.contact-title {
    font-size: 1.75rem;
    font-weight: 500;
    margin-bottom: 32px;
}

.contact-text {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 48px;
}

.contact-text p {
    margin-bottom: 16px;
}

/* Contact Form */
.contact-form {
    text-align: left;
    max-width: 560px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-main);
}

.form-label .required {
    color: var(--accent-secondary);
    font-size: 0.85rem;
}

.form-input {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 1rem;
    color: var(--text-main);
    background: var(--bg-main);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    outline: none;
    letter-spacing: 0.03em;
}

.form-input::placeholder {
    color: #b0b8c4;
}

.form-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(28, 92, 158, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.7;
}

.contact-action {
    text-align: center;
    margin-top: 8px;
}

.contact-action .btn {
    min-width: 200px;
}

/* Form Success Message */
.form-success {
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--accent-primary);
    color: #fff;
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.form-success h3 {
    font-size: 1.3rem;
    font-weight: 500;
    margin-bottom: 12px;
    color: var(--text-main);
}

.form-success p {
    color: var(--text-muted);
}

/* Footer */
.footer {
    padding: 80px 0 40px;
    background: var(--bg-surface);
    border-top: 1px solid var(--accent-border);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.8;
}

.footer-info {
    margin-top: 16px;
}

.footer-rep {
    font-size: 0.9rem;
    color: var(--text-main);
    font-weight: 500;
}

.footer-email {
    font-size: 0.9rem;
    margin-top: 4px;
}

.footer-email a {
    color: var(--accent-primary);
}

.footer-email a:hover {
    text-decoration: underline;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: var(--text-main);
    font-size: 0.95rem;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--accent-border);
    padding-top: 32px;
}

/* Animations */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1.2s ease, transform 1.2s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.fade-in-up.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* Responsive */
@media (max-width: 768px) {
    .pc-only {
        display: none;
    }
    
    .nav-links, .nav-cta {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stance-grid {
        grid-template-columns: 1fr;
    }
    
    .service-row {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .service-number {
        margin-bottom: 16px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 16px;
    }
    
    .problems-content, .contact-box, .target-list {
        padding: 32px 24px;
    }
}