@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&family=Zen+Kaku+Gothic+New:wght@400;500;700&display=swap');

:root {
    --primary: #1a1a2e;
    --secondary: #16213e;
    --accent: #e94560;
    --accent-light: #ff6b6b;
    --gold: #d4af37;
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --gray: #6c757d;
    --text: #2d3436;
    --gradient-1: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-2: linear-gradient(135deg, #e94560 0%, #ff6b6b 100%);
    --shadow: 0 10px 40px rgba(0,0,0,0.1);
    --shadow-lg: 0 25px 80px rgba(0,0,0,0.15);
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
}

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

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

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background: var(--white);
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

header.scrolled {
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 40px;
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    width: auto;
}

nav {
    display: flex;
    align-items: center;
    gap: 35px;
}

nav a {
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    position: relative;
    padding: 5px 0;
    transition: color 0.3s ease;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
}

nav a:hover {
    color: var(--accent);
}

nav a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.mobile-menu-btn span {
    width: 25px;
    height: 2px;
    background: var(--primary);
    transition: all 0.3s ease;
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-1);
    padding-top: 80px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(233,69,96,0.15) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 60%;
    height: 150%;
    background: radial-gradient(ellipse, rgba(212,175,55,0.1) 0%, transparent 60%);
    animation: pulse 10s ease-in-out infinite reverse;
}

@keyframes pulse {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.5; }
    50% { transform: scale(1.1) rotate(5deg); opacity: 0.8; }
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--accent);
    top: 10%;
    right: 5%;
    animation: float 15s ease-in-out infinite;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--gold);
    bottom: 20%;
    left: 10%;
    animation: float 12s ease-in-out infinite reverse;
}

.shape-3 {
    width: 150px;
    height: 150px;
    border: 3px solid var(--accent);
    background: transparent;
    top: 40%;
    left: 5%;
    animation: rotate 20s linear infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) translateX(0); }
    25% { transform: translateY(-30px) translateX(20px); }
    50% { transform: translateY(-15px) translateX(-10px); }
    75% { transform: translateY(-40px) translateX(15px); }
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 2;
    padding: 60px 0;
}

.hero-text {
    color: var(--white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(233,69,96,0.2);
    border: 1px solid rgba(233,69,96,0.3);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 25px;
    animation: fadeInUp 0.8s ease;
}

.hero-badge i {
    color: var(--accent-light);
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title span {
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 30px;
    line-height: 1.9;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-price {
    display: flex;
    align-items: baseline;
    gap: 15px;
    margin-bottom: 35px;
    animation: fadeInUp 0.8s ease 0.6s both;
}

.price-main {
    font-size: 3rem;
    font-weight: 900;
    color: var(--gold);
}

.price-tax {
    font-size: 14px;
    opacity: 0.7;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.8s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 35px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    transition: all 0.4s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-2);
    color: var(--white);
    box-shadow: 0 10px 30px rgba(233,69,96,0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(233,69,96,0.5);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255,255,255,0.3);
}

.btn-outline:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--white);
}

.hero-image {
    position: relative;
    animation: fadeInRight 1s ease 0.5s both;
}

.hero-image-wrapper {
    position: relative;
    padding: 40px;
}

.hero-image-wrapper::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90%;
    height: 90%;
    background: radial-gradient(ellipse, rgba(233,69,96,0.2) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
}

.hero-image img {
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 30px 60px rgba(0,0,0,0.3));
    animation: bikeFloat 6s ease-in-out infinite;
}

@keyframes bikeFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(1deg); }
}

.hero-features {
    display: flex;
    gap: 30px;
    margin-top: 40px;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    backdrop-filter: blur(10px);
}

.hero-feature i {
    font-size: 24px;
    color: var(--gold);
}

.hero-feature span {
    font-size: 13px;
    color: var(--white);
    opacity: 0.9;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

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


.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 15px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 20px;
}

.section-desc {
    font-size: 16px;
    color: var(--gray);
    max-width: 600px;
    margin: 0 auto;
}

.features {
    background: var(--gray-light);
    position: relative;
    overflow: hidden;
}

.features::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e94560' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    position: relative;
    z-index: 2;
}

.feature-card {
    background: var(--white);
    padding: 40px 30px;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-2);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

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

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(233,69,96,0.1) 0%, rgba(255,107,107,0.1) 100%);
    border-radius: 20px;
    font-size: 32px;
    color: var(--accent);
    transition: all 0.4s ease;
}

.feature-card:hover .feature-icon {
    background: var(--gradient-2);
    color: var(--white);
    transform: scale(1.1) rotate(5deg);
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 15px;
}

.feature-desc {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
}

.specs {
    background: var(--white);
}

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

.specs-image {
    position: relative;
}

.specs-image-wrapper {
    position: relative;
    border-radius: 30px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.specs-image img {
    width: 100%;
    display: block;
}

.specs-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gradient-2);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 50px;
    font-size: 13px;
    font-weight: 600;
}

.specs-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.spec-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 25px;
    background: var(--gray-light);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.spec-item:hover {
    background: var(--white);
    box-shadow: var(--shadow);
    transform: translateX(10px);
}

.spec-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-2);
    border-radius: 12px;
    color: var(--white);
    font-size: 20px;
    flex-shrink: 0;
}

.spec-info h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 5px;
}

.spec-info p {
    font-size: 14px;
    color: var(--gray);
}

.gallery {
    background: var(--primary);
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.gallery .section-title {
    color: var(--white);
}

.gallery .section-desc {
    color: rgba(255,255,255,0.7);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.gallery-item {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 1;
    cursor: pointer;
}

.gallery-item:first-child {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26,26,46,0.8) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    display: flex;
    align-items: flex-end;
    padding: 25px;
}

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-overlay span {
    font-size: 14px;
    font-weight: 500;
}

.benefits {
    background: var(--gray-light);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.benefit-card {
    display: flex;
    gap: 25px;
    padding: 35px;
    background: var(--white);
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.4s ease;
}

.benefit-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.benefit-number {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-1);
    color: var(--white);
    font-size: 24px;
    font-weight: 900;
    border-radius: 15px;
    flex-shrink: 0;
}

.benefit-content h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 10px;
}

.benefit-content p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.8;
}

.cta {
    background: var(--gradient-1);
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 200%;
    background: radial-gradient(ellipse, rgba(233,69,96,0.2) 0%, transparent 60%);
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
    color: var(--white);
}

.cta-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 20px;
}

.cta-desc {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta-price {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.cta-price-value {
    font-size: 3.5rem;
    font-weight: 900;
    color: var(--gold);
}

.cta-price-label {
    font-size: 14px;
    opacity: 0.7;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

footer {
    background: var(--secondary);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 50px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-brand .logo img {
    filter: brightness(0) invert(1);
}

.footer-brand p {
    font-size: 14px;
    opacity: 0.7;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-links h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background: var(--accent);
}

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

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    font-size: 14px;
    opacity: 0.7;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    opacity: 1;
    color: var(--accent);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    font-size: 13px;
    opacity: 0.6;
}

.footer-disclaimer {
    font-size: 11px;
    opacity: 0.5;
    max-width: 600px;
    text-align: right;
    line-height: 1.6;
}

.mobile-nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--white);
    z-index: 999;
    padding: 100px 40px 40px;
    transform: translateX(-100%);
    transition: transform 0.4s ease;
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav a {
    display: block;
    font-size: 24px;
    font-weight: 600;
    padding: 20px 0;
    border-bottom: 1px solid var(--gray-light);
}


@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-features {
        justify-content: center;
    }
    
    .hero-image {
        order: -1;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .specs-content {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .gallery-item:first-child {
        grid-column: span 2;
        grid-row: span 1;
        aspect-ratio: 2/1;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .header-inner {
        padding: 15px 20px;
    }
    
    nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-nav {
        display: block;
    }
    
    .hero {
        padding-top: 100px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-features {
        flex-direction: column;
        align-items: center;
    }
    
    .price-main {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-item:first-child {
        grid-column: span 1;
        aspect-ratio: 16/9;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-disclaimer {
        text-align: center;
    }
    
    .cta-price-value {
        font-size: 2.5rem;
    }
    
    .section {
        padding: 70px 0;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .benefit-card {
        flex-direction: column;
        text-align: center;
    }
    
    .spec-item {
        flex-direction: column;
        text-align: center;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
}

.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

.parallax-bg {
    position: absolute;
    width: 100%;
    height: 120%;
    top: -10%;
    left: 0;
    background-size: cover;
    background-position: center;
    will-change: transform;
}