:root {
    --bg-dark: #050505;
    --card-bg: #121212;
    --accent: #0084ff;
    --text-white: #ffffff;
    --text-dim: #b0b0b0;
    --border: #222;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    background-color: var(--bg-dark);
    color: var(--text-white);
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    line-height: 1.6;
}

/* Header */
header {
    position: fixed;
    width: 100%;
    padding: 20px 0;
    z-index: 1000;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(10px);
}
nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    padding: 0 20px;
}
.logo { font-weight: 700; font-size: 1.5rem; letter-spacing: 2px; }
nav ul { display: flex; list-style: none; }
nav ul li { margin-left: 30px; }
nav ul li a { text-decoration: none; color: white; font-size: 0.9rem; }

/* Hero Section with Image */
#hero {
    height: 100vh;
    background: url('hero-bg.jpg') no-repeat center center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    text-align: center;
}
.hero-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: radial-gradient(circle, rgba(0,0,0,0.2) 0%, rgba(5,5,5,0.9) 80%);
}
.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    padding: 20px;
}
.hero-content h1 { font-size: clamp(2.5rem, 7vw, 5rem); line-height: 1.1; margin: 20px 0; }
.hero-content p { color: var(--text-dim); font-size: 1.2rem; margin-bottom: 40px; }
.badge { color: var(--accent); letter-spacing: 4px; font-weight: bold; }

/* Section Common */
section { padding: 120px 0; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.section-title { font-size: 2.5rem; margin-bottom: 60px; text-align: center; }

/* Strength Cards */
.strength-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.card { background: var(--card-bg); padding: 50px 40px; border-radius: 10px; border: 1px solid var(--border); transition: 0.3s; }
.card:hover { border-color: var(--accent); transform: translateY(-5px); }
.card .icon { font-size: 2.5rem; margin-bottom: 20px; }
.card h3 { margin-bottom: 15px; }

/* Service List */
.service-list { list-style: none; }
.service-list li { display: flex; padding: 40px 0; border-bottom: 1px solid var(--border); }
.num { color: var(--accent); font-weight: bold; font-size: 1.5rem; margin-right: 40px; }

/* Contact Form */
.contact-wrapper { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; }
.info-details { margin-top: 30px; color: var(--text-dim); }
.info-details p { margin-bottom: 10px; }

.contact-form { background: var(--card-bg); padding: 40px; border-radius: 15px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; margin-bottom: 8px; font-size: 0.9rem; }
.form-group label span { background: #ff4d4d; font-size: 10px; padding: 2px 6px; border-radius: 3px; margin-left: 10px; vertical-align: middle; }
input, textarea {
    width: 100%; padding: 12px; background: #000; border: 1px solid var(--border);
    color: white; border-radius: 5px; outline: none;
}
input:focus, textarea:focus { border-color: var(--accent); }
.submit-btn {
    width: 100%; padding: 15px; background: var(--accent); color: white;
    border: none; border-radius: 5px; font-weight: bold; cursor: pointer; transition: 0.3s;
}
.submit-btn:hover { opacity: 0.8; }

/* Footer */
footer { padding: 40px 0; border-top: 1px solid var(--border); }
.footer-bottom { display: flex; justify-content: space-between; color: var(--text-dim); font-size: 0.8rem; }
.footer-nav a { color: var(--text-dim); text-decoration: none; }

/* Responsive */
@media (max-width: 768px) {
    .contact-wrapper { grid-template-columns: 1fr; }
    .hero-content h1 { font-size: 3rem; }
}