/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #0F2C4E; /* ネイビー: 信頼、知的 */
    --color-secondary: #C5A059; /* ゴールド: 品質、成果 */
    --color-secondary-hover: #b08d4b;
    --color-text-main: #1A1A1A; /* 濃いグレー: 視認性 */
    --color-text-light: #4A5568; /* やや薄いグレー */
    --color-bg-base: #FFFFFF;
    --color-bg-light: #F4F6F8; /* 薄いグレー背景 */
    --color-bg-dark: #1A202C;
    --color-white: #FFFFFF;
    --color-border: #E2E8F0;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Container */
    --container-width: 1200px;
    --header-height: 80px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
}

/* Reset & Base Styles */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    color: var(--color-text-main);
    background-color: var(--color-bg-base);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

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

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Noto Serif JP', serif;
    font-weight: 700;
    line-height: 1.4;
}

.section-title {
    font-size: 2rem;
    text-align: center;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.section-subtitle {
    text-align: center;
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
    display: block;
}

/* Layout Utilities */
.container {
    width: 90%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.grid {
    display: grid;
    gap: var(--spacing-md);
}

@media (min-width: 768px) {
    .grid-2 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(3, 1fr); }
    .section-title { font-size: 2.5rem; }
}

/* SVG Icons Utility */
.icon {
    width: 24px;
    height: 24px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.icon-lg {
    width: 48px;
    height: 48px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2rem;
    font-weight: 700;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    font-size: 1rem;
    gap: 0.5rem;
}

.btn-primary {
    background-color: var(--color-secondary);
    color: var(--color-white);
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.btn-primary:hover {
    background-color: var(--color-secondary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

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

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

/* Header */
header {
    background-color: var(--color-white);
    height: var(--header-height);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    display: flex;
    align-items: center;
}

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

.logo {
    font-family: 'Noto Serif JP', serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo img {
    height: 40px;
    width: auto;
    display: inline-block;
}

.nav-menu {
    display: none;
}

.header-cta {
    display: none;
}

@media (min-width: 1024px) {
    .nav-menu {
        display: flex;
        gap: 1.5rem;
        font-size: 0.95rem;
        font-weight: 500;
    }
    .header-cta {
        display: block;
    }
    .btn-header {
        padding: 0.5rem 1.5rem;
        font-size: 0.9rem;
    }
}

/* Hero Section */
.hero {
    margin-top: var(--header-height);
    background-image: linear-gradient(rgba(15, 44, 78, 0.85), rgba(15, 44, 78, 0.7)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    line-height: 1.3;
}

.hero p {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
}

@media (min-width: 768px) {
    .hero h1 { font-size: 3.5rem; }
    .hero p { font-size: 1.25rem; }
}

/* Problems Section */
.problems {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-light);
}

.problem-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 5px solid var(--color-text-light);
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    height: 100%;
}

.problem-icon {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.problem-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

/* Strengths Section */
.strengths {
    padding: var(--spacing-xl) 0;
}

.strength-grid {
    display: grid;
    gap: var(--spacing-lg);
}

@media (min-width: 900px) {
    .strength-grid {
        grid-template-columns: 1fr 1px 1fr;
        align-items: start;
    }
    .divider {
        width: 1px;
        height: 100%;
        background-color: var(--color-border);
    }
}

.strength-col h3 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-primary);
    border-bottom: 2px solid var(--color-secondary);
    padding-bottom: 0.5rem;
    display: inline-block;
}

.strength-list li {
    position: relative;
    padding-left: 2rem;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.strength-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.4rem;
    width: 20px;
    height: 20px;
    background-color: var(--color-secondary);
    mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"/></svg>');
    -webkit-mask-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="3" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"/></svg>');
    mask-size: cover;
    -webkit-mask-size: cover;
}

.strength-desc {
    margin-top: var(--spacing-sm);
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* Services Section */
.services {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-primary);
    color: var(--color-white);
}

.services .section-title {
    color: var(--color-white);
}

.services .section-subtitle {
    color: rgba(255,255,255,0.8);
}

.service-card {
    background-color: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    transition: background-color 0.3s;
}

.service-card:hover {
    background-color: rgba(255,255,255,0.1);
}

.service-icon {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.service-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0;
}

/* Flow Section */
.flow {
    padding: var(--spacing-xl) 0;
}

.flow-list {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.flow-item {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.flow-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 24px;
    top: 48px;
    bottom: -24px;
    width: 2px;
    background-color: var(--color-border);
    z-index: 0;
}

.flow-num {
    width: 48px;
    height: 48px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-family: 'Noto Serif JP', serif;
    flex-shrink: 0;
    z-index: 1;
}

.flow-content {
    flex: 1;
    padding-top: 0.5rem;
}

.flow-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
}

.flow-content p {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

.flow-highlight {
    border: 2px solid var(--color-secondary);
    padding: 1rem;
    border-radius: var(--radius-md);
    background-color: #FFFDF5;
}

.flow-highlight .flow-content h3 {
    color: #A05E03;
}

/* FAQ Section */
.faq {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-light);
}

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

.faq-item {
    background-color: var(--color-white);
    margin-bottom: 1rem;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.faq-question {
    font-weight: 700;
    margin-bottom: 0.5rem;
    display: flex;
    gap: 0.5rem;
    color: var(--color-primary);
}

.faq-question::before {
    content: 'Q.';
    color: var(--color-secondary);
}

.faq-answer {
    padding-left: 1.5rem;
    color: var(--color-text-light);
    font-size: 0.95rem;
}

/* Contact Section */
.contact {
    padding: var(--spacing-xl) 0;
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
    background-color: var(--color-bg-light);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 700;
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(15, 44, 78, 0.1);
}

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

.contact-micro {
    text-align: center;
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* Footer */
footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: var(--spacing-lg) 0 80px;
}

.footer-grid {
    margin-bottom: var(--spacing-md);
}

.footer-info h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-white);
}

.footer-links {
    margin-top: var(--spacing-md);
}

.footer-links a {
    display: block;
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

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

.copyright {
    text-align: center;
    opacity: 0.6;
    font-size: 0.8rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--spacing-md);
}

/* Sticky Footer for SP */
.sticky-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-white);
    padding: 10px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    display: flex;
    gap: 10px;
    z-index: 1000;
}

.sticky-btn {
    flex: 1;
    padding: 12px;
    font-size: 0.9rem;
    border-radius: 4px;
    text-align: center;
    font-weight: 700;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
}

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

.sticky-btn-web {
    background-color: var(--color-secondary);
    color: var(--color-white);
}

@media (min-width: 768px) {
    .sticky-footer {
        display: none;
    }
    footer {
        padding-bottom: var(--spacing-lg);
    }
    .contact-form {
        padding: var(--spacing-lg);
    }
}

/* Element edit styles */
.service-text {
    font-size: 0.95rem;
    margin-top: 1rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

/* Element edit styles */
.centered-grid {
    display: flex !important;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.centered-grid .service-card {
    flex: 1 1 280px;
    max-width: 380px;
    width: 100%;
}

/* Element edit styles */
.flow-next-steps {
    display: block;
    margin-top: 0.8rem;
    padding-top: 0.8rem;
    border-top: 1px dashed var(--color-border);
    font-weight: 700;
    color: var(--color-primary);
    font-size: 0.9rem;
}

/* Element edit styles */
.footer-company-link {
    display: inline-block;
    margin-top: 0.8rem;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: underline;
    font-size: 0.9rem;
    transition: opacity 0.3s;
}

.footer-company-link:hover {
    opacity: 1;
    text-decoration: none;
}