/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Yu Gothic', 'Hiragino Kaku Gothic Pro', 'Meiryo', sans-serif;
    line-height: 1.8;
    color: #333;
    background-color: #f5f5f5;
}

.container {
    max-width: 980px;
    margin: 0 auto;
    background-color: #fff;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
}

/* Header */
.header {
    background-color: #fff;
    border-bottom: 2px solid #333;
    padding: 10px 20px;
    animation: slideDown 0.8s ease-out;
}

.header-date {
    font-size: 12px;
    font-weight: bold;
    color: #333;
}

/* Hero Section */
.hero-section {
    display: grid;
    grid-template-columns: 1fr 200px 150px;
    gap: 0;
    padding: 20px;
    position: relative;
    animation: fadeIn 1s ease-out;
}

.hero-image {
    grid-column: 1;
    /* position: relative;  ←使用しない */
    
    /* Flexboxを使用して子要素を縦に並べる */
    display: grid;
    grid-template-columns: 1fr; 
    align-content: start; /* 上詰めで配置 */
}

/* 画像エリアが他の要素を隠さないようにする */
.image-placeholder {
    width: 100%;
    display: block;
}

.image-placeholder img {
    width: 100%;
    height: auto;
    display: block;
}

.hero-content {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 10px 15px;
    position: relative;
	background-color: #EAEAEA;
    background-image: repeating-linear-gradient(
        45deg,
        rgba(0,0,0,0.08) 0px,
        rgba(0,0,0,0.08) 1px,
        transparent 1px,
        transparent 8px
    );
}

.sidebar-label {
    background-color: #333;
    color: #fff;
    padding: 0px 15px;
	width:100%;
	text-align: center;
    writing-mode: horizontal-tb;
    font-size: 14px;
    font-weight: bold;
    margin-bottom: 10px;
    border-radius: 4px;
    animation: slideInRight 0.8s ease-out;
}

.main-title {
    writing-mode: vertical-rl;
    text-orientation: upright;
    font-size: 48px;
    font-weight: bold;
    letter-spacing: 0.1em;
    line-height: 1.2;
    margin: 20px 0;
}

.title-large {
    display: inline-block;
}

.hero {
    display: flex;
    justify-content: center; /* 横方向センター */
    align-items: center;     /* 縦方向センター */
}
.hero-text {
	writing-mode: vertical-rl;
	align-items: center;
	text-orientation: upright;
	block-size: auto;
	align-self: flex-start;
	font-size: 45px;
	line-height: 1.5;
	padding: 20px;
	font-weight: 900;
	animation:900ideInRight 1.2s ease-out 0.4s both;
	/* 余白（左右20px） */
	margin: 0 20px;
	/* 背景 */
	background: rgba(200, 200, 200, 0.35);
	backdrop-filter: blur(2px);

}

.vertical-text {
    letter-spacing: 0.1em;
}

/* Company Info Sidebar */
.company-info {
    grid-column: 3;
    display: flex;
    flex-direction: column;
    gap: 20px;
    animation: slideInRight 1s ease-out 0.6s both;
}

.info-box {
    background-color: #333;
    color: #fff;
    padding: 15px;
    border-radius: 4px;
    font-size: 12px;
    transition: transform 0.3s ease;
}

.info-box:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.info-box h3 {
    font-size: 14px;
    margin-bottom: 10px;
    border-bottom: 1px solid #fff;
    padding-bottom: 5px;
}

.info-box p {
    line-height: 1.6;
}

.ad-space {
    background-color: #FFF;
    color: #D69B4E;
    padding: 40px 15px;
    text-align: center;
    writing-mode: vertical-rl;
    font-size: 18px;
    letter-spacing: 0.2em;
    border-radius: 4px;
    height: 550px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Company Details */
.company-details {
	font-size: 14px;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
    padding: 30px 20px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.company-card {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.company-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
}

.company-card h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: #333;
    border-bottom: 2px solid #333;
    padding-bottom: 10px;
}

.company-info-list {
    list-style: none;
    font-size: 13px;
}

.company-info-list li {
    margin-bottom: 8px;
    padding-left: 10px;
    border-left: 3px solid #667eea;
}

.intro-text {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
    line-height: 1.6;
    font-size: 14px;
	transition: transform 0.3s ease, box-shadow 0.3s ease;
	font-weight: bold;
	color: #313131;
}
/* Articles intoro */
.article-intro {
	display: grid;
	grid-template-columns: repeat(2, 1fr);
	gap:20px;
	padding: 30px 20px;
    animation: fadeIn 1.2s ease-out;
	
}
.article-intro-box {
	display: flex;
	flex-flow: column;
}
.article-intro-box2 {
	display: flex;
	flex-flow: column;
	padding-left: 20px;
}
.lineer {
	border-left: #9A9A9A 1px solid;
}
.article-intro-title {
	font-size: 18px;
    margin-bottom: 15px;
    color: #333;
	font-weight: 700;
	line-height: 1.3rem;
}
.article-intro-title2 {
	font-size: 13px;
    line-height: 1.8;
    color: #555;
	padding: 5px;
	border: 1px #ccc solid;
	text-align: center;
	margin-bottom: 10px;
	font-weight: 700;
	background-color: #F1F1F1;
}
.article-intro-article {
	font-size: 13px;
    line-height: 1.5;
    color: #555;
	margin-bottom: 20px;
	line-height: 1.2rem;
	font-weight: 500;
}
/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    padding: 30px 20px;
    animation: fadeIn 1.2s ease-out;
	background:
      linear-gradient(#ccc, #ccc) 33.33% 10px / 1px calc(100% - 20px) no-repeat,
      linear-gradient(#ccc, #ccc) 66.66% 10px / 1px calc(100% - 20px) no-repeat;
}

.article-card {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeInUp 0.6s ease-out both;
}


.article-card:nth-child(1) { animation-delay: 0.1s; }
.article-card:nth-child(2) { animation-delay: 0.2s; }
.article-card:nth-child(3) { animation-delay: 0.3s; }
.article-card:nth-child(4) { animation-delay: 0.4s; }
.article-card:nth-child(5) { animation-delay: 0.5s; }
.article-card:nth-child(6) { animation-delay: 0.6s; }

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.article-card h2 {
	font-size: 18px;
    margin-bottom: 15px;
    color: #333;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
	line-height: 1.2rem
}
.font35 {
	font-size: 30px;
    margin-bottom: 15px;
    color: #fff;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
	line-height: 2.5rem;
	font-weight: bold;
}

.subtitle {
    font-size: 13px;
    color: #666;
    margin-bottom: 10px;
    font-style: italic;
}

.article-content {
    font-size: 14px;
    line-height: 1.4;
    color: #555;
	font-weight: 500;
}

.image-placeholder-small {
    width: 100%;
    height: 100%;
    margin-top: 15px;
}
.image-placeholder-small img {
    width: 100%;
}

.highlight-box {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border: 2px solid #667eea;
}

.highlight {
    grid-column: 1 / -1;
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 30px;
}

.highlight h2 {
    border-bottom: 2px solid #fff;
    color: #fff;
}

/* System Features */
.system-features {
    margin-top: 15px;
}

.system-boxes {
    display: flex;
    gap: 10px;
    margin: 15px 0;
}

.system-box {
    flex: 1;
    background-color: #333;
    color: #fff;
    padding: 10px;
    text-align: center;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.system-box:hover {
    transform: scale(1.05);
    background-color: #667eea;
}

.feature-list {
    list-style: none;
    font-size: 12px;
    margin: 10px 0;
}

.check-list {
    list-style: none;
    font-size: 12px;
}

.check-list li {
    padding: 8px 0 8px 25px;
    position: relative;
}

.check-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #667eea;
    font-weight: bold;
    font-size: 16px;
}

/* Bottom Content */
.bottom-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 20px;
    padding: 30px 20px;
    background-color: #f9f9f9;
}

.left-column,
.right-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.bottom-article,
.system-article,
.dx-article {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    border: 1px solid #ddd;
    animation: fadeInUp 0.8s ease-out;
}

.bottom-article h2,
.system-article h2,
.dx-article h2 {
    font-size: 16px;
    margin-bottom: 15px;
    color: #333;
    border-bottom: 2px solid #667eea;
    padding-bottom: 10px;
}

.bottom-article p,
.system-article p,
.dx-article p {
    font-size: 13px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 10px;
}

/* DX Flow */
.dx-flow {
    display: flex;
    align-items: center;
    justify-content: space-around;
    margin: 20px 0;
    padding: 20px;
    background-color: #f5f7fa;
    border-radius: 8px;
}

.flow-item {
    text-align: center;
    animation: bounceIn 0.8s ease-out;
}

.icon-factory,
.icon-data,
.icon-chart {
    font-size: 40px;
    margin-bottom: 10px;
}

.arrow {
    font-size: 24px;
    color: #667eea;
    font-weight: bold;
}

.success-factors,
.visualization {
    margin-top: 20px;
    padding: 15px;
    background-color: #f9f9f9;
    border-left: 4px solid #667eea;
    border-radius: 4px;
}

.success-factors h3,
.visualization h3 {
    font-size: 14px;
    margin-bottom: 10px;
    color: #333;
}

/* Footer Ad */
.footer-ad {
    background-color: #ddd;
    color: #666;
    padding: 60px 20px;
    text-align: center;
    font-size: 24px;
    letter-spacing: 0.2em;
    margin-top: 20px;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        transform: scale(1);
    }
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(102, 126, 234, 0.6);
    }
}