@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700&family=Shippori+Mincho:wght@400;500;600;700&display=swap');

:root {
    --primary-rose: #e8b4b8;
    --primary-gold: #d4a574;
    --accent-pink: #f5d5d8;
    --deep-rose: #c48b8f;
    --cream: #faf8f5;
    --warm-white: #fffcf9;
    --text-dark: #3d3d3d;
    --text-light: #6b6b6b;
    --header-bg: #f5d5c8;
    --nav-bg: #8b6914;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--warm-white);
    color: var(--text-dark);
    line-height: 1.8;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background-color: var(--header-bg);
    padding: 20px 0;
    text-align: center;
}

.logo-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.logo-container img {
    max-height: 80px;
    width: auto;
}

nav {
    background-color: var(--nav-bg);
    padding: 12px 0;
}

nav ul {
    display: flex;
    justify-content: center;
    align-items: center;
    list-style: none;
    gap: 10px;
}

nav ul li {
    position: relative;
}

nav ul li:not(:last-child)::after {
    content: '|';
    color: rgba(255, 255, 255, 0.5);
    margin-left: 10px;
}

nav ul li a {
    color: #fff;
    text-decoration: none;
    font-size: 14px;
    font-weight: 400;
    padding: 8px 15px;
    transition: opacity 0.3s ease;
}

nav ul li a:hover {
    opacity: 0.8;
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--cream) 0%, var(--accent-pink) 50%, var(--primary-rose) 100%);
    overflow: hidden;
}

.hero-particles {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: linear-gradient(45deg, var(--primary-gold), var(--primary-rose));
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite ease-in-out;
}

.particle:nth-child(1) { width: 20px; height: 20px; top: 10%; left: 10%; animation-delay: 0s; }
.particle:nth-child(2) { width: 35px; height: 35px; top: 20%; right: 15%; animation-delay: 2s; }
.particle:nth-child(3) { width: 15px; height: 15px; top: 60%; left: 5%; animation-delay: 4s; }
.particle:nth-child(4) { width: 25px; height: 25px; bottom: 20%; right: 10%; animation-delay: 1s; }
.particle:nth-child(5) { width: 40px; height: 40px; top: 40%; left: 20%; animation-delay: 3s; }
.particle:nth-child(6) { width: 18px; height: 18px; bottom: 30%; left: 15%; animation-delay: 5s; }

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-30px) rotate(90deg); }
    50% { transform: translateY(0) rotate(180deg); }
    75% { transform: translateY(30px) rotate(270deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding: 80px 20px;
    max-width: 1200px;
}

.hero-text {
    animation: slideInLeft 1s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-gold), #e8c89e);
    color: #fff;
    padding: 8px 20px;
    border-radius: 30px;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(212, 165, 116, 0.4); }
    50% { box-shadow: 0 0 0 15px rgba(212, 165, 116, 0); }
}

.hero-title {
    font-family: 'Shippori Mincho', serif;
    font-size: 3.5rem;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-dark), var(--deep-rose));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 30px;
    line-height: 1.9;
}

.hero-price {
    font-family: 'Shippori Mincho', serif;
    font-size: 2.5rem;
    color: var(--deep-rose);
    margin-bottom: 10px;
}

.hero-price-note {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 30px;
}

.hero-cta {
    display: inline-block;
    background: linear-gradient(135deg, var(--deep-rose), var(--primary-rose));
    color: #fff;
    padding: 18px 50px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(196, 139, 143, 0.3);
}

.hero-cta:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(196, 139, 143, 0.4);
}

.hero-image {
    position: relative;
    animation: slideInRight 1s ease-out;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

.hero-image-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image-bg {
    position: absolute;
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, var(--accent-pink), var(--primary-rose));
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    animation: morphing 8s infinite ease-in-out;
}

@keyframes morphing {
    0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    25% { border-radius: 58% 42% 75% 25% / 76% 46% 54% 24%; }
    50% { border-radius: 50% 50% 33% 67% / 55% 27% 73% 45%; }
    75% { border-radius: 33% 67% 58% 42% / 63% 68% 32% 37%; }
}

.hero-image img {
    position: relative;
    z-index: 1;
    max-width: 350px;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
    animation: floatProduct 4s infinite ease-in-out;
}

@keyframes floatProduct {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}


.section-title {
    font-family: 'Shippori Mincho', serif;
    font-size: 2.2rem;
    text-align: center;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    color: var(--text-light);
    margin-bottom: 50px;
    font-size: 0.95rem;
}

.features {
    padding: 100px 0;
    background: var(--warm-white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-card {
    background: #fff;
    padding: 50px 30px;
    border-radius: 20px;
    text-align: center;
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-rose), var(--primary-gold));
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover::before {
    transform: scaleX(1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--accent-pink), var(--primary-rose));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 2rem;
    color: #fff;
}

.feature-card h3 {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    font-size: 0.95rem;
    line-height: 1.8;
}

.about-product {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--cream) 0%, var(--warm-white) 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image {
    position: relative;
}

.about-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.1);
}

.about-image-decoration {
    position: absolute;
    width: 200px;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-gold), var(--primary-rose));
    border-radius: 50%;
    opacity: 0.2;
    z-index: -1;
    top: -30px;
    left: -30px;
}

.about-text h2 {
    font-family: 'Shippori Mincho', serif;
    font-size: 2rem;
    margin-bottom: 25px;
    color: var(--text-dark);
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 20px;
    line-height: 2;
}

.about-list {
    list-style: none;
    margin-top: 30px;
}

.about-list li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.about-list li i {
    color: var(--deep-rose);
    font-size: 1.2rem;
}

.how-to-use {
    padding: 100px 0;
    background: var(--warm-white);
}

.steps-container {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.step-card {
    flex: 1;
    min-width: 250px;
    max-width: 300px;
    text-align: center;
    padding: 40px 25px;
    background: #fff;
    border-radius: 20px;
    position: relative;
    transition: all 0.3s ease;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-gold), var(--deep-rose));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-family: 'Shippori Mincho', serif;
    font-size: 1.5rem;
    font-weight: 600;
}

.step-card h3 {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.2rem;
    margin: 20px 0 15px;
    color: var(--text-dark);
}

.step-card p {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.8;
}

.authenticity {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--text-dark) 0%, #2a2a2a 100%);
    color: #fff;
}

.authenticity .section-title {
    color: #fff;
}

.authenticity .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.auth-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.auth-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.auth-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary-rose);
}

.auth-card h3 {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-rose);
    display: flex;
    align-items: center;
    gap: 10px;
}

.auth-card p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.9;
}

.cta-section {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--accent-pink) 0%, var(--primary-rose) 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-section::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -250px;
    right: -100px;
}

.cta-section::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    bottom: -150px;
    left: -50px;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-section h2 {
    font-family: 'Shippori Mincho', serif;
    font-size: 2.5rem;
    color: #fff;
    margin-bottom: 20px;
}

.cta-section p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.cta-price {
    font-family: 'Shippori Mincho', serif;
    font-size: 3rem;
    color: #fff;
    margin-bottom: 10px;
}

.cta-price-note {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

.cta-button {
    display: inline-block;
    background: #fff;
    color: var(--deep-rose);
    padding: 20px 60px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.4s ease;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.cta-button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.25);
}

footer {
    background: var(--text-dark);
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-logo img {
    max-height: 60px;
    filter: brightness(0) invert(1);
}

.footer-links h4 {
    font-family: 'Shippori Mincho', serif;
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--primary-rose);
}

.footer-links ul {
    list-style: none;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-links ul li a:hover {
    color: var(--primary-rose);
}

.footer-disclaimer {
    background: rgba(0, 0, 0, 0.2);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
}

.footer-disclaimer p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.8rem;
    line-height: 1.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}


@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-image-bg {
        width: 300px;
        height: 300px;
    }
    
    .hero-image img {
        max-width: 280px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .auth-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    nav ul {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    nav ul li:not(:last-child)::after {
        display: none;
    }
    
    nav ul li a {
        padding: 6px 10px;
        font-size: 12px;
    }
    
    .hero {
        min-height: auto;
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-price {
        font-size: 2rem;
    }
    
    .hero-image-bg {
        width: 250px;
        height: 250px;
    }
    
    .hero-image img {
        max-width: 220px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .steps-container {
        flex-direction: column;
        align-items: center;
    }
    
    .step-card {
        max-width: 100%;
    }
    
    .cta-section h2 {
        font-size: 1.8rem;
    }
    
    .cta-price {
        font-size: 2.2rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-cta {
        padding: 15px 35px;
        font-size: 0.9rem;
    }
    
    .hero-image-bg {
        width: 200px;
        height: 200px;
    }
    
    .hero-image img {
        max-width: 180px;
    }
    
    .feature-card {
        padding: 40px 20px;
    }
    
    .auth-card {
        padding: 30px 20px;
    }
    
    .cta-button {
        padding: 15px 40px;
        font-size: 1rem;
    }
}