:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #0f3460;
    --color-highlight: #e94560;
    --color-light: #f8f9fa;
    --color-white: #ffffff;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-border: #e0e0e0;
    --font-primary: 'Zen Kaku Gothic New', 'Noto Sans JP', sans-serif;
    --font-secondary: 'Noto Sans JP', sans-serif;
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-full: 50%;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

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

.section-label {
    display: inline-block;
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-highlight);
    margin-bottom: 16px;
}

.section-label--center {
    display: block;
    text-align: center;
}

.section-title {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    color: var(--color-primary);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    max-width: 1400px;
    margin: 0 auto;
    gap: 20px;
}

.nav__menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    color: var(--color-text);
    font-size: 20px;
    transition: var(--transition-fast);
}

.nav__menu-btn:hover {
    color: var(--color-highlight);
}

.nav__logo {
    display: flex;
    align-items: center;
}

.nav__logo-img {
    height: 28px;
    width: auto;
}

.nav__search {
    flex: 1;
    max-width: 400px;
    display: flex;
    justify-content: center;
}

.nav__search-input {
    width: 100%;
    max-width: 300px;
    padding: 10px 20px;
    border: 1px solid var(--color-border);
    border-radius: 30px;
    font-family: var(--font-primary);
    font-size: 14px;
    background: var(--color-light);
    transition: var(--transition-fast);
}

.nav__search-input:focus {
    outline: none;
    border-color: var(--color-highlight);
}

.nav__cta {
    padding: 10px 24px;
    background: var(--color-highlight);
    color: var(--color-white);
    border-radius: 30px;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.nav__cta:hover {
    background: #d63d56;
    transform: translateY(-2px);
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.hero__bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 50%, var(--color-accent) 100%);
}

.hero__particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero__particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: float 15s infinite ease-in-out;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) translateX(50px);
        opacity: 0;
    }
}

.hero__gradient {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 70%, rgba(233, 69, 96, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 70% 30%, rgba(15, 52, 96, 0.3) 0%, transparent 50%);
}

.hero__content {
    position: relative;
    z-index: 10;
    text-align: center;
    color: var(--color-white);
    padding: 40px 24px;
}

.hero__breath-circle {
    position: relative;
    width: 180px;
    height: 180px;
    margin: 0 auto 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero__breath-ring {
    position: absolute;
    inset: 0;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: breathe 4s infinite ease-in-out;
}

.hero__breath-ring--2 {
    inset: 15px;
    animation-delay: 0.5s;
    border-color: rgba(255, 255, 255, 0.5);
}

.hero__breath-ring--3 {
    inset: 30px;
    animation-delay: 1s;
    border-color: rgba(255, 255, 255, 0.7);
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.15);
        opacity: 1;
    }
}

.hero__breath-text {
    font-size: 24px;
    font-weight: 300;
    letter-spacing: 8px;
    animation: fadeInOut 4s infinite ease-in-out;
}

@keyframes fadeInOut {
    0%, 100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

.hero__title {
    font-size: clamp(32px, 6vw, 56px);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 24px;
}

.hero__title-line {
    display: block;
}

.hero__title-line--accent {
    background: linear-gradient(90deg, var(--color-highlight), #ff8a9b);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: clamp(16px, 2.5vw, 20px);
    font-weight: 300;
    opacity: 0.9;
    margin-bottom: 40px;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 18px 40px;
    background: var(--color-highlight);
    color: var(--color-white);
    border-radius: 50px;
    font-size: 16px;
    font-weight: 500;
    transition: var(--transition-normal);
}

.hero__cta:hover {
    background: #d63d56;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(233, 69, 96, 0.4);
}

.hero__cta i {
    transition: var(--transition-fast);
}

.hero__cta:hover i {
    transform: translateX(5px);
}

.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--color-white);
    font-size: 12px;
    letter-spacing: 2px;
    opacity: 0.7;
}

.hero__scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-white), transparent);
    animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
    0% {
        transform: scaleY(0);
        transform-origin: top;
    }
    50% {
        transform: scaleY(1);
        transform-origin: top;
    }
    51% {
        transform-origin: bottom;
    }
    100% {
        transform: scaleY(0);
        transform-origin: bottom;
    }
}


.about {
    padding: 120px 0;
    background: var(--color-white);
}

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

.about__visual {
    position: relative;
}

.about__image-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about__image {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    transition: var(--transition-slow);
}

.about__image-wrapper:hover .about__image {
    transform: scale(1.05);
}

.about__float-badge {
    position: absolute;
    bottom: 24px;
    right: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 24px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    font-weight: 500;
}

.about__float-badge i {
    color: var(--color-highlight);
    font-size: 20px;
}

.about__content {
    padding: 20px 0;
}

.about__title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 700;
    line-height: 1.4;
    margin-bottom: 24px;
    color: var(--color-primary);
}

.about__text {
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: 32px;
    line-height: 2;
}

.about__features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.about__features li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
}

.about__features i {
    color: var(--color-highlight);
    font-size: 18px;
}

.benefits {
    padding: 120px 0;
    background: var(--color-light);
}

.benefits__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.benefit-card {
    background: var(--color-white);
    padding: 40px 30px;
    border-radius: var(--radius-md);
    text-align: center;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

.benefit-card__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-radius: var(--radius-full);
    font-size: 32px;
    color: var(--color-white);
    transition: var(--transition-normal);
}

.benefit-card:hover .benefit-card__icon {
    background: linear-gradient(135deg, var(--color-highlight), #ff8a9b);
    transform: scale(1.1);
}

.benefit-card__title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-primary);
}

.benefit-card__text {
    font-size: 14px;
    color: var(--color-text-light);
    line-height: 1.8;
}

.features {
    padding: 120px 0;
    background: var(--color-white);
}

.features__showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.features__main-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.features__img {
    width: 100%;
    aspect-ratio: 1/1;
    object-fit: cover;
}

.features__list {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.feature-item {
    display: flex;
    gap: 24px;
    padding: 24px;
    background: var(--color-light);
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
}

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

.feature-item__number {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-highlight);
    line-height: 1;
}

.feature-item__content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-primary);
}

.feature-item__content p {
    font-size: 14px;
    color: var(--color-text-light);
}

.howto {
    padding: 120px 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    color: var(--color-white);
}

.howto .section-label {
    color: rgba(255, 255, 255, 0.7);
}

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

.howto__steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.howto__step {
    text-align: center;
    padding: 40px 30px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    flex: 1;
    min-width: 200px;
    max-width: 280px;
    transition: var(--transition-normal);
}

.howto__step:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.howto__step-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-highlight);
    border-radius: var(--radius-full);
    font-size: 28px;
}

.howto__step-number {
    font-size: 12px;
    letter-spacing: 2px;
    opacity: 0.7;
    margin-bottom: 10px;
}

.howto__step h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.howto__step p {
    font-size: 14px;
    opacity: 0.8;
}

.howto__connector {
    width: 60px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-highlight), transparent);
}

.gallery {
    padding: 120px 0;
    background: var(--color-white);
}

.gallery__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(2, 250px);
    gap: 20px;
}

.gallery__item {
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}

.gallery__item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

.gallery__item:hover img {
    transform: scale(1.1);
}

.gallery__item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.3), transparent);
    opacity: 0;
    transition: var(--transition-normal);
}

.gallery__item:hover::after {
    opacity: 1;
}

.gallery__item--large {
    grid-column: span 2;
    grid-row: span 2;
}

.gallery__item--wide {
    grid-column: span 2;
}

.cta-section {
    position: relative;
    padding: 120px 0;
    background: var(--color-light);
    overflow: hidden;
}

.cta-section__bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-section__wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 200px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%231a1a2e' fill-opacity='0.05' d='M0,160L48,176C96,192,192,224,288,213.3C384,203,480,149,576,138.7C672,128,768,160,864,181.3C960,203,1056,213,1152,197.3C1248,181,1344,139,1392,117.3L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") no-repeat bottom;
    background-size: cover;
}

.cta-section__content {
    position: relative;
    text-align: center;
    z-index: 10;
}

.cta-section__content h2 {
    font-size: clamp(28px, 5vw, 42px);
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--color-primary);
}

.cta-section__content p {
    font-size: 18px;
    color: var(--color-text-light);
    margin-bottom: 40px;
}

.cta-section__btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 20px 50px;
    background: linear-gradient(135deg, var(--color-highlight), #ff8a9b);
    color: var(--color-white);
    border-radius: 50px;
    font-size: 18px;
    font-weight: 600;
    transition: var(--transition-normal);
    box-shadow: 0 10px 30px rgba(233, 69, 96, 0.3);
}

.cta-section__btn:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(233, 69, 96, 0.4);
}

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

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 30px;
}

.footer__logo {
    height: 30px;
    filter: brightness(0) invert(1);
}

.footer__tagline {
    font-size: 14px;
    opacity: 0.7;
    margin-top: 10px;
}

.footer__nav {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.footer__nav a {
    font-size: 14px;
    opacity: 0.8;
    transition: var(--transition-fast);
}

.footer__nav a:hover {
    opacity: 1;
    color: var(--color-highlight);
}

.footer__bottom {
    text-align: center;
}

.footer__copyright {
    font-size: 14px;
    opacity: 0.7;
    margin-bottom: 16px;
}

.footer__disclaimer {
    font-size: 12px;
    opacity: 0.5;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}


@media (max-width: 1024px) {
    .benefits__grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about__grid {
        gap: 50px;
    }
    
    .features__showcase {
        gap: 40px;
    }
    
    .gallery__grid {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(3, 200px);
    }
    
    .gallery__item--large {
        grid-column: span 2;
        grid-row: span 1;
    }
    
    .gallery__item--wide {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .nav {
        padding: 10px 16px;
    }
    
    .nav__search {
        display: none;
    }
    
    .nav__cta {
        padding: 8px 16px;
        font-size: 12px;
    }
    
    .hero {
        min-height: 100svh;
    }
    
    .hero__breath-circle {
        width: 140px;
        height: 140px;
        margin-bottom: 40px;
    }
    
    .hero__breath-text {
        font-size: 18px;
    }
    
    .hero__scroll {
        display: none;
    }
    
    .about {
        padding: 80px 0;
    }
    
    .about__grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about__visual {
        order: -1;
    }
    
    .benefits {
        padding: 80px 0;
    }
    
    .benefits__grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .benefit-card {
        padding: 30px 24px;
    }
    
    .features {
        padding: 80px 0;
    }
    
    .features__showcase {
        grid-template-columns: 1fr;
    }
    
    .feature-item {
        padding: 20px;
    }
    
    .feature-item:hover {
        transform: none;
    }
    
    .howto {
        padding: 80px 0;
    }
    
    .howto__steps {
        flex-direction: column;
    }
    
    .howto__connector {
        width: 2px;
        height: 40px;
        background: linear-gradient(180deg, transparent, var(--color-highlight), transparent);
    }
    
    .howto__step {
        max-width: 100%;
        width: 100%;
    }
    
    .gallery {
        padding: 80px 0;
    }
    
    .gallery__grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto;
    }
    
    .gallery__item {
        height: 200px;
    }
    
    .gallery__item--large,
    .gallery__item--wide {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .cta-section {
        padding: 80px 0;
    }
    
    .cta-section__btn {
        padding: 16px 36px;
        font-size: 16px;
    }
    
    .footer {
        padding: 40px 0 24px;
    }
    
    .footer__content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer__nav {
        justify-content: center;
    }
    
    .section-title {
        margin-bottom: 40px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero__cta {
        padding: 14px 28px;
        font-size: 14px;
    }
    
    .about__float-badge {
        bottom: 16px;
        right: 16px;
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .benefit-card__icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .howto__step-icon {
        width: 60px;
        height: 60px;
        font-size: 24px;
    }
    
    .footer__nav {
        flex-direction: column;
        gap: 16px;
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}