:root {
    --primary-color: #A2D94C; /* 明るい黄緑 */
    --primary-hover: #8fc63d;
    --bg-dark: #000000;
    --bg-light: #f0f9ff; /* 淡い青空色 */
    --bg-sky: #87CEEB; /* 鮮やかな青空 */
    --text-main: #1B4332; /* 深い緑 */
    --text-muted: #4a6d5c;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --border-color: #e2f0e7;
}

.stox-theme {
    --primary-color: #ff007f;
    --primary-hover: #e60072;
    --text-main: #1B4332; /* メインテーマの深い緑に合わせる */
    --text-muted: #4a6d5c;
    --border-color: #e2f0e7;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    color: var(--text-main);
    background-color: var(--white);
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header & Nav */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    color: white;
    -webkit-text-stroke: 1px black;
    text-stroke: 1px black;
    letter-spacing: -0.025em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-main);
    font-weight: 600;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero-section {
    padding: 180px 0 120px;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, var(--bg-sky) 0%, var(--bg-light) 100%);
    z-index: -1;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 10%;
    left: -10%;
    width: 120%;
    height: 100%;
    background: radial-gradient(circle at 20% 30%, white 0%, transparent 20%),
                radial-gradient(circle at 70% 40%, white 0%, transparent 25%),
                radial-gradient(circle at 40% 60%, white 0%, transparent 15%);
    filter: blur(50px);
    opacity: 0.6;
    animation: drift 20s infinite alternate ease-in-out;
}

@keyframes drift {
    from { transform: translateX(-5%); }
    to { transform: translateX(5%); }
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(120, 163, 141, 0.1);
    color: var(--primary-color);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

h1 {
    font-size: 4rem;
    font-weight: 800;
    letter-spacing: -0.05em;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.btn.primary {
    background-color: var(--primary-color);
    color: var(--white);
    box-shadow: 0 10px 15px -3px rgba(120, 163, 141, 0.2);
}

.btn.primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(120, 163, 141, 0.3);
}

.btn.secondary {
    background-color: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn.secondary:hover {
    background-color: rgba(120, 163, 141, 0.05);
    transform: translateY(-2px);
}

/* Sections */
.section {
    padding: 100px 0;
}

.alt-bg {
    background-color: var(--bg-light);
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    margin-bottom: 3rem;
    text-align: center;
}


/* About Section Specifics */
.about-grid {
    display: flex;
    justify-content: center;
}

.about-text {
    max-width: 800px;
    text-align: center;
}

/* Product Card */
.product-card {
    background: var(--white);
    border-radius: 24px;
    padding: 3rem;
    display: flex;
    flex-direction: column; /* Changed to column for wide image */
    align-items: center;
    gap: 2rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    border: 1px solid var(--border-color);
    text-align: center;
}

.product-info {
    max-width: 800px;
}

.product-badge {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.product-info p {
    color: var(--text-muted);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.product-visual {
    width: 100%;
    display: flex;
    justify-content: center;
    overflow: hidden;
    border-radius: 16px;
}

.product-image {
    width: 100%;
    height: auto;
    max-width: 800px; /* Increased to allow wider view */
    object-fit: cover;
    border-radius: 16px;
    box-shadow: 0 10px 30px -10px rgba(255, 0, 127, 0.2);
}

/* Contact */
.contact-container {
    text-align: center;
    max-width: 600px;
}

.contact-action {
    margin-top: 2rem;
}

/* Footer */
footer {
    padding: 4rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-logo {
    font-weight: 800;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

.footer-info p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    .subtitle { font-size: 1.125rem; }
    .product-card {
        flex-direction: column;
        padding: 2rem;
        text-align: center;
    }
    .product-visual { order: -1; }
    .nav-links { display: none; }
}