/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    --primary-color: #0f172a;    /* ディープスレート */
    --accent-color: #2563eb;     /* 信頼のブルー */
    --accent-hover: #1d4ed8;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --text-main: #334155;
    --text-dark: #0f172a;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --radius-md: 6px;
    --radius-sm: 4px;
    --font-base: 'Helvetica Neue', Arial, 'Hiragino Kaku Gothic ProN', 'Segoe UI', sans-serif;
}

/* ==========================================================================
   BASE & RESET STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-base);
    color: var(--text-main);
    background-color: var(--bg-light);
    font-size: 16px;
    line-height: 1.7;
    -webkit-text-size-adjust: 100%;
}

.container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.container-small {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ==========================================================================
   FIRST VIEW (FV)
   ========================================================================== */
.hero {
    background: linear-gradient(rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.85)), url('images/lp_hero.jpg') no-repeat center center / cover;
    color: var(--bg-white);
    padding: 120px 0;
    text-align: center;
}

.hero-title {
    font-size: 42px;
    font-weight: bold;
    line-height: 1.4;
    margin: 0 0 24px 0;
}

.hero-lead {
    font-size: 20px;
    color: #94a3b8;
    margin-bottom: 45px;
}

.btn-cv {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--bg-white);
    text-decoration: none;
    padding: 18px 45px;
    font-weight: bold;
    font-size: 20px;
    border-radius: var(--radius-sm);
    min-height: 48px;
    box-shadow: 0 6px 12px rgba(37, 99, 235, 0.3);
    transition: background-color 0.2s, transform 0.2s;
    animation: pulse 3s infinite;
}

.btn-cv:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* ==========================================================================
   PROBLEM SECTION
   ========================================================================== */
.section-problem {
    background-color: #f1f5f9;
    padding: 80px 0;
}

.problem-box {
    background-color: var(--bg-white);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

.problem-list {
    list-style: none;
    padding: 0;
    margin: 20px 0 0 0;
}

.problem-item {
    font-size: 18px;
    font-weight: bold;
    color: #e11d48;
    margin-bottom: 16px;
    padding-left: 30px;
    position: relative;
}

.problem-item::before {
    content: "✕";
    position: absolute;
    left: 0;
    top: 0;
}

/* ==========================================================================
   EQUIPMENT / FEATURE COMPONENT
   ========================================================================== */
.section-title {
    font-size: 32px;
    color: var(--text-dark);
    text-align: center;
    margin: 80px 0 50px 0;
    position: relative;
}

.section-title::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 15px auto 0 auto;
}

.feature-row {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-bottom: 80px;
}

.feature-row.reverse {
    flex-direction: row-reverse;
}

.feature-img-box {
    flex: 1;
}

.feature-img-box img {
    width: 100%;
    height: 380px;
    object-fit: cover;
    object-position: center top;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
}

.feature-content {
    flex: 1;
}

.feature-tag {
    display: inline-block;
    background-color: #eff6ff;
    color: var(--accent-color);
    font-size: 13px;
    font-weight: bold;
    padding: 4px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 15px;
}

.feature-heading {
    font-size: 26px;
    color: var(--text-dark);
    margin: 0 0 20px 0;
    line-height: 1.4;
}

/* ==========================================================================
   PRICING & TABLES
   ========================================================================== */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-white);
    margin-bottom: 50px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 15px;
    min-width: 650px;
}

th, td {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: #f8fafc;
    color: var(--text-dark);
    font-weight: bold;
}

/* ==========================================================================
   FOOTER & LEGAL LINKS
   ========================================================================== */
.footer {
    background-color: var(--primary-color);
    color: #94a3b8;
    padding: 60px 0;
    text-align: center;
    margin-top: 100px;
}

.footer-logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--bg-white);
    margin-bottom: 10px;
}

.footer-company {
    font-size: 14px;
    margin-bottom: 5px;
}

.footer-address {
    font-size: 13px;
    color: #64748b;
    margin-bottom: 30px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.footer-link {
    color: #94a3b8;
    text-decoration: none;
    font-size: 14px;
}

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

.footer-copy {
    font-size: 12px;
    color: #475569;
}

/* ==========================================================================
   MEDIA QUERIES
   ========================================================================== */
@media (max-width: 768px) {
    .hero {
        padding: 80px 0;
    }
    .hero-title {
        font-size: 28px;
    }
    .hero-lead {
        font-size: 16px;
    }
    .btn-cv {
        width: 100%;
        text-align: center;
        padding: 16px 20px;
        font-size: 18px;
    }
    .feature-row, .feature-row.reverse {
        flex-direction: column;
        gap: 25px;
        margin-bottom: 60px;
    }
    .feature-img-box img {
        height: 240px;
    }
    .feature-heading {
        font-size: 20px;
    }
    .section-title {
        font-size: 24px;
    }
    .footer-links {
        flex-direction: column;
        gap: 12px;
    }
}