:root {
    --bg-color: #0f172a; --text-color: #f1f5f9;
    --accent-web: #38bdf8; --accent-infra: #4ade80; --accent-pc: #f472b6;
    --card-bg: #1e293b; --font-main: 'Inter', 'Noto Sans JP', sans-serif;
}
body { background-color: var(--bg-color); color: var(--text-color); font-family: var(--font-main); margin: 0; line-height: 1.6; }
header { padding: 4rem 2rem; max-width: 1200px; margin: 0 auto; text-align: center; }
h1 { font-size: clamp(2rem, 5vw, 4rem); font-weight: 700; background: linear-gradient(to right, var(--accent-web), var(--accent-infra)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; margin-bottom: 1rem; }
.hero-desc { font-size: 1.1rem; color: #94a3b8; max-width: 600px; margin: 0 auto 3rem; }
.bento-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1.5rem; max-width: 1200px; margin: 0 auto 4rem; padding: 0 2rem; }
.card { background: var(--card-bg); border-radius: 16px; padding: 2rem; transition: transform 0.3s ease, box-shadow 0.3s ease; border: 1px solid rgba(255,255,255,0.05); }
.card:hover { transform: translateY(-5px); box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1); border-color: rgba(255,255,255,0.1); }
.card h3 { font-size: 1.5rem; margin-top: 0; display: flex; align-items: center; gap: 0.5rem; }
.service-web h3 { color: var(--accent-web); } .service-linux h3 { color: var(--accent-infra); } .service-pc h3 { color: var(--accent-pc); }
.card p { color: #cbd5e1; font-size: 0.95rem; }
.tag { display: inline-block; font-size: 0.75rem; padding: 0.2rem 0.6rem; border-radius: 999px; background: rgba(255,255,255,0.1); margin-right: 0.5rem; margin-top: 1rem; }
.cta-section { text-align: center; padding: 4rem 2rem; background: linear-gradient(180deg, var(--bg-color) 0%, #172554 100%); }
.btn-primary { display: inline-block; background: #fff; color: var(--bg-color); padding: 1rem 2.5rem; border-radius: 99px; text-decoration: none; font-weight: 700; transition: all 0.3s; }
.btn-primary:hover { background: var(--accent-web); color: white; transform: scale(1.05); }
footer { text-align: center; padding: 2rem; border-top: 1px solid rgba(255,255,255,0.05); font-size: 0.8rem; color: #64748b; }