/* Base Styles */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Noto Sans JP', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
    scroll-behavior: smooth;
}
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.bg-light { background-color: #f4f7f9; }
.section-title {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 50px;
    position: relative;
}
.section-title::after {
    content: '';
    display: block;
    width: 50px;
    height: 4px;
    background: #003366;
    margin: 15px auto 0;
}

/* Header */
header {
    height: 70px;
    display: flex;
    align-items: center;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}
header .container {
    display: flex;
    justify-content: space-between;
    width: 100%;
    align-items: center;
}
.logo { font-weight: bold; font-size: 1.2rem; color: #003366; }
nav ul { list-style: none; display: flex; align-items: center; }
nav ul li { margin-left: 20px; }
nav ul li a { text-decoration: none; color: #333; font-size: 0.9rem; }

/* Hero */
.hero {
    background: linear-gradient(135deg, #001f3f 0%, #003366 100%);
    color: #fff;
    padding: 100px 0;
    display: flex;
    align-items: center;
}
.hero .container { display: flex; align-items: center; flex-wrap: wrap; }
.hero-content { flex: 1; min-width: 300px; margin-right: 40px; }
.tagline { color: #00d1ff; font-weight: bold; margin-bottom: 10px; }
.hero h1 { font-size: 2.5rem; line-height: 1.3; margin-bottom: 20px; }
.hero h1 span { color: #ffcc00; }
.hero .description { font-size: 1.1rem; margin-bottom: 30px; opacity: 0.9; }

.video-placeholder {
    flex: 1;
    min-width: 300px;
    height: 300px;
    background: rgba(255,255,255,0.1);
    border: 2px dashed rgba(255,255,255,0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    text-align: center;
}

/* Buttons */
.btn-main, .btn-sub, .btn-s {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: 0.3s;
    border: none;
    cursor: pointer;
}
.btn-main { background: #ffcc00; color: #001f3f; margin-right: 15px; }
.btn-main:hover { background: #e6b800; }
.btn-sub { border: 2px solid #fff; color: #fff; }
.btn-sub:hover { background: #fff; color: #001f3f; }
.btn-s { background: #003366; color: #fff; padding: 10px 20px; font-size: 0.8rem; }

/* Grid & Cards */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 20px; }
.card { padding: 30px; border: 1px solid #eee; border-radius: 10px; transition: 0.3s; }
.card:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(0,0,0,0.05); }
.card h3 { margin-bottom: 15px; color: #003366; }

/* Flow */
.solution-flow { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.flow-item { flex: 1; min-width: 250px; text-align: center; position: relative; }
.num { font-size: 3rem; font-weight: bold; color: rgba(0,51,102,0.1); display: block; }
.flow-item h4 { margin-top: -20px; margin-bottom: 10px; }

/* Roadmap */
.roadmap { max-width: 700px; margin: 0 auto; }
.road-item { display: flex; margin-bottom: 30px; align-items: center; }
.quarter { 
    background: #003366; color: #fff; width: 60px; height: 60px; 
    border-radius: 50%; display: flex; align-items: center; 
    justify-content: center; font-weight: bold; margin-right: 20px;
    flex-shrink: 0;
}
.road-item strong { color: #d9534f; font-size: 1.2rem; }

/* Form */
.contact-form { max-width: 600px; margin: 0 auto; }
.contact-form input, .contact-form select, .contact-form textarea {
    width: 100%; padding: 12px; margin-bottom: 15px; border: 1px solid #ccc; border-radius: 5px;
}
.contact-form textarea { height: 120px; }
.contact-form button { width: 100%; font-size: 1.1rem; }

footer { text-align: center; padding: 40px 0; background: #001f3f; color: #fff; font-size: 0.8rem; }

@media (max-width: 768px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-content { margin-right: 0; margin-bottom: 40px; }
    .btn-main { margin-bottom: 10px; width: 100%; text-align: center; }
    .btn-sub { width: 100%; text-align: center; }
}

/* Menu Styles */
.menu-intro { text-align: center; margin-bottom: 40px; font-weight: bold; font-size: 1.1rem; color: #003366; }
.menu-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-bottom: 40px; }
.menu-card { 
    background: #fff; border: 2px solid #eee; padding: 40px 30px; border-radius: 15px; 
    position: relative; display: flex; flex-direction: column;
}
.menu-card.highlight { border-color: #00d1ff; box-shadow: 0 10px 30px rgba(0,209,255,0.1); }
.menu-tag { 
    position: absolute; top: -15px; left: 20px; background: #00d1ff; color: #fff; 
    padding: 5px 15px; border-radius: 20px; font-size: 0.8rem; font-weight: bold;
}
.menu-card h3 { font-size: 1.25rem; margin-bottom: 5px; color: #003366; }
.menu-category { font-size: 0.9rem; color: #666; margin-bottom: 20px; font-weight: bold; }
.price { font-size: 2.5rem; font-weight: bold; color: #333; margin-bottom: 20px; border-bottom: 1px solid #eee; padding-bottom: 10px; }
.price span { font-size: 1rem; color: #666; }
.menu-card ul { list-style: none; margin-bottom: 20px; flex-grow: 1; }
.menu-card ul li { margin-bottom: 10px; font-size: 0.95rem; position: relative; padding-left: 20px; }
.menu-card ul li::before { content: '✓'; position: absolute; left: 0; color: #00d1ff; font-weight: bold; }
.target { font-size: 0.85rem; background: #f8f9fa; padding: 10px; border-radius: 5px; color: #555; font-style: italic; }

.menu-footer { text-align: center; max-width: 800px; margin: 0 auto; }
.ltv-box { 
    margin-top: 20px; background: #001f3f; color: #fff; padding: 20px; border-radius: 10px;
    border-left: 5px solid #ffcc00;
}

/* Concept Styles */
.bg-dark-blue { background-color: #001529; color: #fff; padding: 60px 0; }
.concept-box { text-align: center; max-width: 900px; margin: 0 auto; border: 1px solid rgba(255,255,255,0.2); padding: 40px; border-radius: 20px; }
.concept-title { font-size: 1.5rem; margin-bottom: 30px; color: #00d1ff; }
.concept-lead { font-size: 1.8rem; margin-bottom: 20px; line-height: 1.4; }
.concept-lead strong { color: #ffcc00; }
.concept-text { font-size: 1.1rem; margin-bottom: 30px; opacity: 0.9; }
.concept-footer { font-size: 0.9rem; border-top: 1px solid rgba(255,255,255,0.1); padding-top: 20px; color: #aaa; font-style: italic; }