:root {
    --primary-color: #232F3E;
    --secondary-color: #00bceb;
    --accent-color: #ff4a4a;
    --bg-color: #f4f7f6;
    --card-bg: #ffffff;
    --text-main: #333333;
    --text-muted: #666666;
    --meraki-color: #74b82d;
}

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

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

header {
    background: linear-gradient(135deg, var(--primary-color), #37475A);
    color: white;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

header p {
    font-size: 1.1rem;
    opacity: 0.9;
    color: var(--secondary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.section-title {
    font-size: 1.8rem;
    border-left: 5px solid var(--secondary-color);
    padding-left: 1rem;
    margin: 3rem 0 1.5rem 0;
    color: var(--primary-color);
}

.architecture-box {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    text-align: center;
    overflow-x: auto;
}

.architecture-desc {
    margin-top: 1rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    text-align: left;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
    border-top: 4px solid var(--secondary-color);
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card.alert {
    border-top-color: var(--accent-color);
}

.feature-icon {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.feature-card.alert .feature-icon {
    color: var(--accent-color);
}

.feature-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.tech-tags {
    margin: 1rem 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tech-tag {
    background: #e9ecef;
    color: var(--text-muted);
    font-size: 0.8rem;
    padding: 0.2rem 0.8rem;
    border-radius: 20px;
    font-weight: 500;
}

.tech-tag.aws {
    background: #fff3e0;
    color: #e65100;
    border: 1px solid #ffe0b2;
}

.tech-tag.cisco {
    background: #e0f7fa;
    color: #006080;
    border: 1px solid #b2ebf2;
}

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

.feature-desc ul {
    margin-top: 0.5rem;
    padding-left: 1.5rem;
}

.tech-stack-container {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
}

.tech-category {
    flex: 1;
    min-width: 250px;
}

.tech-category h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

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

.tech-list li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.tech-list li::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: var(--secondary-color);
    margin-right: 0.5rem;
}