:root {
    --okinawa-blue: #0ea5e9;
    --okinawa-teal: #14b8a6;
    --okinawa-cyan: #06b6d4;
    --coral-orange: #fb923c;
    --coral-pink: #f472b6;
    --sand-beige: #fbbf24;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f0fdff;
    --white: #ffffff;
    --okinawa-gradient: linear-gradient(135deg, #0ea5e9 0%, #14b8a6 50%, #06b6d4 100%);
    --coral-gradient: linear-gradient(135deg, #fb923c 0%, #f472b6 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

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

body {
    font-family: 'Hiragino Mincho Pro', 'Noto Serif JP', 'Yu Mincho', 'Times New Roman', serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
    background-image: url('../images/ryukyu-pattern.png');
    background-repeat: repeat;
    background-size: auto;
    background-attachment: fixed;
}

/* 背景柄ã®ä¸Šã«è¼‰ã‚‹è¦ç´ ã®èª­ã¿ã‚„ã™ã•å¯¾ç­– */
main, header, footer {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(2px);
}

main {
    padding-top: 70px;
}

/* Header Styles */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 2rem;
    min-height: 70px;
}

/* Logo Section */
.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.logo-image {
    width: 45px;
    height: 45px;
    position: relative;
    transition: transform 0.3s ease;
    overflow: hidden;
    border-radius: 8px;
}

.logo-image:hover {
    transform: scale(1.05) rotate(2deg);
}

.logo-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    display: block;
    filter: drop-shadow(0 2px 4px rgba(14, 165, 233, 0.2));
    transition: filter 0.3s ease;
}

.logo-image:hover img {
    filter: drop-shadow(0 4px 8px rgba(14, 165, 233, 0.3));
}

.logo-placeholder {
    width: 100%;
    height: 100%;
    display: none;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(20, 184, 166, 0.1) 100%);
    border-radius: 8px;
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.logo-placeholder svg {
    width: 80%;
    height: 80%;
    filter: drop-shadow(0 2px 4px rgba(14, 165, 233, 0.2));
}

.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.company-name {
    font-family: 'Hiragino Mincho Pro', 'Noto Serif JP', 'Yu Mincho', 'Times New Roman', serif;
    font-size: 1.4rem;
    font-weight: 700;
    background: var(--okinawa-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.company-tagline {
    font-size: 0.75rem;
    color: var(--text-light);
    font-weight: 500;
    margin-top: -2px;
    letter-spacing: 0.02em;
}

/* Navigation */
.global-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.global-nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.global-nav a:hover {
    color: var(--okinawa-blue);
}

.global-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--okinawa-gradient);
    transition: width 0.3s ease;
}

.global-nav a:hover::after {
    width: 100%;
}

/* Navigation */
.global-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.global-nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.global-nav a:hover {
    color: var(--okinawa-blue);
}

.global-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--okinawa-gradient);
    transition: width 0.3s ease;
}

.global-nav a:hover::after {
    width: 100%;
}

/* Navigation */
.global-nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.global-nav a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.global-nav a:hover {
    color: var(--okinawa-blue);
}

.global-nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: var(--okinawa-gradient);
    transition: width 0.3s ease;
}

.global-nav a:hover::after {
    width: 100%;
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-dark);
    transition: all 0.3s ease;
}

.mobile-menu-btn.active {
    transform: rotate(90deg);
    color: var(--okinawa-blue);
}

/* スライド背景ã®è¨­å®š */
.slide-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.slide-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}


/* スライドリンク */
.slide-link {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    text-decoration: none;
    color: inherit;
    position: relative;
    z-index: 1;
}

.slide-link:hover {
    text-decoration: none;
}

.slide-link .hero-cta {
    display: inline-block;
    padding: 14px 26px;
    background: linear-gradient(135deg, #00bfff, #0077be);
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.3s ease;
    cursor: pointer;
}

/* Animated Ocean Waves */
.ocean-waves {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    z-index: -2;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 200%;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' fill='%23ffffff' fill-opacity='0.03'/%3E%3C/svg%3E") repeat-x;
}

@keyframes wave-animation {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* Floating Coral Elements */
.coral-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.coral {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--coral-gradient);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
    opacity: 0.6;
}

.coral:nth-child(1) { top: 20%; left: 10%; animation-delay: -0.5s; }
.coral:nth-child(2) { top: 40%; left: 20%; animation-delay: -1s; background: var(--sand-beige); }
.coral:nth-child(3) { top: 60%; left: 80%; animation-delay: -1.5s; }
.coral:nth-child(4) { top: 30%; left: 70%; animation-delay: -2s; background: var(--coral-pink); }
.coral:nth-child(5) { top: 80%; left: 30%; animation-delay: -2.5s; }
.coral:nth-child(6) { top: 10%; left: 85%; animation-delay: -3s; background: var(--sand-beige); }

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-carousel {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

.carousel-container {
    height: 100%;
    position: relative;
}

.carousel-slide {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
    display: flex;
    justify-content: center;
    align-items: center;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 1;
}

/* 背景ç"»åƒã®ã‚ªãƒ¼ãƒãƒ¼ãƒ¬ã‚¤ */
.carousel-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        rgba(0, 0, 0, 0.3),
        rgba(0, 0, 0, 0.1),
        rgba(0, 0, 0, 0.3)
    );
    z-index: 1;
}

/* フォールãƒãƒƒã‚¯ç"¨ã‚°ãƒ©ãƒ‡ãƒ¼ã‚·ãƒ§ãƒ³èƒŒæ™¯ */
.carousel-slide:nth-child(1) {
    background-image: linear-gradient(135deg, 
        rgba(14, 165, 233, 0.9) 0%, 
        rgba(20, 184, 166, 0.8) 50%, 
        rgba(6, 182, 212, 0.9) 100%);
}

.carousel-slide:nth-child(2) {
    background-image: linear-gradient(45deg, 
        rgba(251, 146, 60, 0.8) 0%, 
        rgba(244, 114, 182, 0.7) 50%, 
        rgba(251, 191, 36, 0.8) 100%);
}

.carousel-slide:nth-child(3) {
    background-image: linear-gradient(225deg, 
        rgba(14, 165, 233, 0.8) 0%, 
        rgba(168, 85, 247, 0.7) 50%, 
        rgba(244, 114, 182, 0.8) 100%);
}

/* カルーセルインジケータ */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 3;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    border: 2px solid rgba(255, 255, 255, 0.6);
    cursor: pointer;
    transition: all 0.3s ease;
}

.indicator.active {
    background: rgba(255, 255, 255, 0.9);
    border-color: rgba(255, 255, 255, 1);
    transform: scale(1.2);
}

.indicator:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.1);
}

/* 文字スタイル（沖縄ã£ã½ã„フォント＋大ãç›® */
.hero-content {
    color: white;
    text-align: center;
    background: rgba(0, 0, 0, 0.2);
    padding: 30px 20px;
    border-radius: 10px;
    max-width: 800px;
    margin: 0 auto;
    font-family: 'Hiragino Mincho Pro', 'Noto Serif JP', 'Yu Mincho', 'Times New Roman', serif;
    z-index: 2;
    position: relative;
}

.hero-content h1 {
    font-family: 'Hiragino Mincho Pro', 'Noto Serif JP', 'Yu Mincho', 'Times New Roman', serif;
    font-size: 3.4rem;
    font-weight: 700;
    letter-spacing: 2px;
    line-height: 1.3;
    text-shadow: 3px 3px 10px rgba(0,0,0,0.6);
    margin-bottom: 15px;
}

.hero-subtitle {
    font-size: 1.4rem;
    font-weight: 400;
    line-height: 1.6;
    text-shadow: 2px 2px 6px rgba(0,0,0,0.5);
    margin-bottom: 20px;
    padding-top: 35px;
}

.hero-cta {
    display: inline-block;
    padding: 14px 26px;
    background: linear-gradient(135deg, #00bfff, #0077be);
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    border-radius: 6px;
    text-decoration: none;
    transition: transform 0.2s ease, background 0.3s ease;
}

.hero-cta:hover {
    transform: scale(1.05);
    background: linear-gradient(135deg, #009acd, #005f8c);
}

/* Section Styles */
.section {
    padding: 5rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Concept Section with Ocean Theme */
.concept {
    position: relative;
    overflow: hidden;
}

.concept::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' fill='%23f0fdff'/%3E%3C/svg%3E") repeat-x;
}

.concept-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.concept-text {
    order: 2;
}

.concept-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.concept-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.concept-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    order: 1;
}

.concept-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    opacity: 0.1;
}

.concept-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--okinawa-blue);
    text-decoration: none;
    font-weight: 600;
    margin-top: 1.5rem;
    transition: all 0.3s ease;
}

.concept-link:hover {
    gap: 1rem;
    color: var(--okinawa-teal);
}

/* About Section with Ocean Theme */
.about {
    position: relative;
    overflow: hidden;
    padding: 3rem 0;
}

.about::before {
    content: '';
    position: absolute;
    top: -50px;
    left: 0;
    width: 100%;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' fill='%23f0fdff'/%3E%3C/svg%3E") repeat-x;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.about-image {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    opacity: 0.1;
}

.placeholder-image {
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.2rem;
}

.placeholder-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* Services Section */
.services {
    padding: 3rem 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-auto-rows: 1fr;
    gap: 2rem;
    margin-top: 3rem;
}

.service-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 600px;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--okinawa-gradient);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(14, 165, 233, 0.1), 0 8px 10px -6px rgba(14, 165, 233, 0.1);
    text-decoration: none;
    color: inherit;
}

.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
    text-align: center;
}

.service-card p {
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.7;
    flex-grow: 1;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--okinawa-blue);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    margin-top: auto;
}

.service-card:hover .service-link {
    gap: 1rem;
    color: var(--okinawa-teal);
}

.service-image {
    width: 100%;
    height: 250px;
    margin-bottom: 15px;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}

.service-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    transition: transform 0.3s ease;
}

.service-card:hover .service-image img {
    transform: scale(1.05);
}

/* Contact CTA Section with Coral Theme */
.contact-cta {
    background: var(--okinawa-gradient);
    color: white;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.contact-cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: -50%;
    width: 200%;
    height: 100%;
    background: radial-gradient(circle at 30% 80%, rgba(251, 146, 60, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 70% 20%, rgba(244, 114, 182, 0.1) 0%, transparent 50%);
    animation: coral-float 20s ease-in-out infinite;
}

@keyframes coral-float {
    0%, 100% { transform: translateX(0) rotate(0deg); }
    50% { transform: translateX(2%) rotate(1deg); }
}

.contact-cta .section-title {
    color: white;
}

.contact-cta .section-subtitle {
    color: rgba(255, 255, 255, 0.9);
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--white);
    color: var(--okinawa-blue);
    padding: 1.2rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    margin-top: 1rem;
    position: relative;
    z-index: 2;
}

.contact-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 20px 25px -5px rgba(255, 255, 255, 0.25), 0 8px 10px -6px rgba(255, 255, 255, 0.1);
    background: linear-gradient(135deg, var(--white) 0%, #f0fdff 100%);
}

/* Footer */
footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    line-height: 1.7;
}

.footer-section a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

/* ================================= */
/* 📱 スマホ・タブレット対応 */
/* ================================= */
@media (max-width: 1024px) {
    .container { padding: 0 1.5rem; }
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}

/* タブレット・スマホ */
@media (max-width: 768px) {
    main, header {
        background-color: rgba(255, 255, 255, 0.75); /* ← 背景透過率を下げて軽やかに */
    }

    footer {
        background: var(--text-dark); /* フッターは不透明に保つ */
    }

    /* フッターを1カラム中央寄せに */
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 1.5rem;
    }

    .header-container { padding: 0.5rem 1rem; }
    .logo-text .company-name { font-size: 1.2rem; }

    /* ナビゲーションを縦並びに */
    .global-nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: rgba(255,255,255,0.95);
        backdrop-filter: blur(12px);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: left 0.3s ease;
        z-index: 999;
    }
    .global-nav.mobile-active { left: 0; }
    .global-nav ul {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    .mobile-menu-btn { display: block; }

    /* ヒーロー */
    .hero-carousel { height: 70vh; }
    .hero-content h1 { font-size: 2rem; }
    .hero-subtitle { font-size: 1rem; padding-top: 20px; }

    /* コンセプト・アバウトを1カラム化 */
    .concept-content,
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .concept-text, .about-text {
        order: 2;
        text-align: center;
    }
    .concept-image, .about-image {
        order: 1;
    }

    /* サービスを縦並びに */
    .services-grid { grid-template-columns: 1fr; }
    .service-card {
        min-height: auto;
        padding: 1.5rem;
    }
    .service-image { height: 200px; }

    /* 見出し調整 */
    .section-title { font-size: 1.8rem; }
    .section-subtitle { font-size: 1rem; margin-bottom: 2rem; }
}

/* 小さいスマホ */
@media (max-width: 480px) {
    .hero-carousel { height: 60vh; }
    .hero-content h1 { font-size: 1.6rem; }
    .hero-subtitle { font-size: 0.9rem; }

    .hero-cta { font-size: 1rem; padding: 10px 18px; }

    .section-title { font-size: 1.5rem; }
    .section-subtitle { font-size: 0.9rem; }

    .service-card h3 { font-size: 1rem; }
    .service-card p { font-size: 0.9rem; }
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    animation: wave-animation 10s infinite linear;
}

.wave:nth-child(2) {
    bottom: 10px;
    animation: wave-animation 7s infinite linear reverse;
    opacity: 0.7;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1200 120'%3E%3Cpath d='M0,0V46.29c47.79,22.2,103.59,32.17,158,28,70.36-5.37,136.33-33.31,206.8-37.5C438.64,32.43,512.34,53.67,583,72.05c69.27,18,138.3,24.88,209.4,13.08,36.15-6,69.85-17.84,104.45-29.34C989.49,25,1113-14.29,1200,52.47V0Z' fill='%23ffffff' fill-opacity='0.05'/%3E%3C/svg%3E") repeat-x;
}

.wave:nth-child(3) {
    bottom: 20px;
    animation: wave-animation 13s infinite linear;
    opacity: 0.5;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='