:root {
    --main-green: #2D5A27;
    --mint: #A8E6CF;
    --bg-light: #F8FAF8;
    --text: #333;
    --white: #ffffff;
}

body { margin: 0; font-family: 'Inter', 'Noto Sans JP', sans-serif; background-color: var(--bg-light); color: var(--text); overflow-x: hidden; }

header { background: rgba(255,255,255,0.8); backdrop-filter: blur(15px); position: fixed; width: 100%; top: 0; padding: 15px 5%; z-index: 1000; border-bottom: 1px solid rgba(0,0,0,0.05); }
nav { display: flex; justify-content: space-between; align-items: center; max-width: 1200px; margin: 0 auto; }
.logo { font-size: 1.8rem; font-weight: 700; color: var(--main-green); letter-spacing: -1.5px; }
nav ul { list-style: none; display: flex; gap: 30px; }
nav ul a { text-decoration: none; color: var(--text); font-weight: 600; font-size: 0.9rem; }

/* Hero Visual with CSS Art */
.hero { height: 90vh; position: relative; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.hero-visual {
    position: absolute; width: 100%; height: 100%;
    background: radial-gradient(circle at 80% 20%, #e8f5e9 0%, transparent 40%),
                radial-gradient(circle at 20% 80%, #f1f8e9 0%, transparent 40%);
    z-index: -1;
}
.hero-visual::after {
    content: ""; position: absolute; top: 10%; right: 10%; width: 400px; height: 400px;
    background: var(--mint); filter: blur(100px); opacity: 0.3; border-radius: 50%;
}

.hero-content { text-align: center; padding: 0 5%; }
.badge { display: inline-block; padding: 5px 15px; background: rgba(45, 90, 39, 0.1); color: var(--main-green); border-radius: 20px; font-size: 0.8rem; font-weight: bold; margin-bottom: 20px; }
.hero h1 { font-size: 4.5rem; color: var(--main-green); margin-bottom: 20px; letter-spacing: -2px; }
.hero p { font-size: 1.25rem; color: #555; margin-bottom: 40px; line-height: 1.6; }

.btn-main { background: var(--main-green); color: white; padding: 18px 45px; border-radius: 40px; text-decoration: none; font-weight: bold; box-shadow: 0 10px 20px rgba(45,90,39,0.2); transition: 0.3s; display: inline-block; }
.btn-main:hover { transform: translateY(-5px); box-shadow: 0 15px 30px rgba(45,90,39,0.3); }

.section { padding: 120px 5%; max-width: 1200px; margin: 0 auto; }
.bg-white { background: #fff; max-width: 100%; }
.section-title { text-align: center; font-size: 2.5rem; margin-bottom: 70px; color: var(--main-green); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 40px; }
.card { background: var(--white); padding: 50px; border-radius: 32px; box-shadow: 0 20px 60px rgba(0,0,0,0.04); border: 1px solid rgba(0,0,0,0.02); }

/* App Icon Placeholder */
.app-icon-preview { width: 80px; height: 80px; background: var(--main-green); border-radius: 20px; margin-bottom: 30px; display: flex; align-items: center; justify-content: center; }
.mint-bg { background: var(--mint); }
.icon-inner { width: 30px; height: 30px; border: 4px solid white; border-radius: 8px; }

/* Organization Table */
.about-container { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: center; max-width: 1000px; margin: 0 auto; }
.info-table { width: 100%; border-collapse: collapse; }
.info-table th { text-align: left; padding: 15px 0; border-bottom: 1px solid #eee; color: var(--main-green); font-size: 0.9rem; width: 40%; }
.info-table td { padding: 15px 0; border-bottom: 1px solid #eee; font-weight: 600; }
.about-text { font-size: 1.1rem; line-height: 1.8; color: #666; }

footer { background: #1a3316; color: white; padding: 80px 5%; text-align: center; }
footer a { color: var(--mint); text-decoration: none; font-weight: bold; }

@media (max-width: 768px) {
    .hero h1 { font-size: 2.8rem; }
    .about-container { grid-template-columns: 1fr; gap: 40px; }
    nav ul { display: none; }
}