/* Variables */
:root {
    --primary-color: #005bc5;
    --primary-light: #e3f2fd;
    --accent-color: #ff8c69;
    --text-main: #333333;
    --text-sub: #666666;
    --gold: #c8aa6e;
    --font-sans: 'Noto Sans JP', sans-serif;
    --font-serif: 'Noto Serif JP', serif;
    --border-radius: 12px;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    color: var(--text-main);
    line-height: 1.7;
    background-color: #ffffff;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s ease;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn-cv {
    display: inline-block;
    background: linear-gradient(135deg, #ff9a7b, #ff7043);
    color: #fff;
    font-weight: bold;
    border-radius: 50px;
    text-align: center;
    padding: 10px 25px;
    box-shadow: 0 4px 10px rgba(255, 112, 67, 0.3);
}

.btn-cv:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(255, 112, 67, 0.4);
}

.btn-large {
    padding: 16px 45px;
    font-size: 1.1rem;
    letter-spacing: 0.05em;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    z-index: 1000;
    box-shadow: 0 1px 10px rgba(0,0,0,0.05);
}

.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 10px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo a {
    display: flex;
    flex-direction: column;
}

.logo-text {
    font-family: var(--font-serif);
    color: var(--primary-color);
    font-size: 1.3rem;
    font-weight: 700;
}

.logo-sub {
    font-size: 0.65rem;
    color: var(--text-sub);
    letter-spacing: 0.1em;
}

.nav-list {
    display: flex;
    align-items: center;
    list-style: none;
    gap: 25px;
}

.nav-list li a {
    font-size: 0.9rem;
    color: var(--text-main);
    font-weight: 500;
    position: relative;
}

.nav-list li a:not(.btn-cv)::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: 0.3s;
}

.nav-list li a:not(.btn-cv):hover {
    color: var(--primary-color);
}

.nav-list li a:not(.btn-cv):hover::after {
    width: 100%;
}

.login-item a {
    color: var(--primary-color) !important;
}

.hamburger {
    display: none;
    cursor: pointer;
}

/* Hero Section */
.hero {
    position: relative;
    height: 90vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    margin-top: 60px;
    overflow: hidden;
    background-color: var(--primary-light); /* 画像読み込みエラー時の予備色 */
}

.hero-bg img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    /* 画像を少し明るく調整 */
    filter: brightness(1.05); 
    z-index: -2;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* 白〜青のグラデーションで透明感を出す */
    background: linear-gradient(90deg, rgba(255,255,255,0.92) 0%, rgba(255,255,255,0.85) 40%, rgba(255,255,255,0.1) 100%);
    z-index: -1;
}

.hero-content {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    z-index: 1;
}

.hero-catch {
    color: var(--gold);
    font-weight: bold;
    letter-spacing: 0.1em;
    margin-bottom: 10px;
    display: inline-block;
    border-bottom: 2px solid var(--gold);
}

.hero-title {
    font-family: var(--font-serif);
    font-size: 3rem;
    color: var(--primary-color);
    line-height: 1.3;
    margin-bottom: 20px;
}

.title-en {
    font-size: 1.5rem;
    font-family: var(--font-sans);
    color: var(--text-sub);
    font-weight: 400;
    display: block;
    margin-bottom: 5px;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-main);
    margin-bottom: 30px;
}

/* Badges */
.hero-badges {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
}

.badge {
    background: rgba(255,255,255,0.9);
    border: 1px solid var(--primary-light);
    padding: 10px 20px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,91,197,0.1);
    text-align: center;
}

.badge-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-sub);
    margin-bottom: 2px;
}

.badge-num {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--primary-color);
    font-family: var(--font-serif);
    line-height: 1;
}

.badge-num small {
    font-size: 0.9rem;
}

.cta-note {
    font-size: 0.8rem;
    margin-top: 10px;
    color: var(--text-sub);
}

/* Wave Decoration */
.hero-wave {
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    line-height: 0;
    z-index: 0;
}

/* Main Menu */
.main-menu {