/* Variables */
:root {
    --color-primary: #B30000;
    --color-primary-dark: #8B0000;
    --color-primary-light: #D60000;
    --color-white: #ffffff;
    --color-black: #333333;
    --color-gray: #f5f5f5;
    --color-gray-dark: #e0e0e0;
    --container-width: 1200px;
    --container-padding: 20px;
    
    /* Typography */
    --font-size-base: clamp(16px, 1.2vw, 18px);
    --font-size-sm: clamp(12px, 1vw, 14px);
    --font-size-lg: clamp(20px, 1.5vw, 24px);
    --font-size-xl: clamp(24px, 2vw, 32px);
    --font-size-2xl: clamp(32px, 3vw, 48px);
    
    /* Line Height */
    --line-height-body: 2;
    --line-height-heading: 1.8;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

@keyframes scaleIn {
    from { transform: scale(0.95); }
    to { transform: scale(1); }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Common */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    box-sizing: border-box;
}

.section-title {
    font-family: 'Noto Serif JP', serif;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-lg);
    color: var(--color-primary);
    position: relative;
    padding-bottom: var(--space-md);
    line-height: var(--line-height-heading);
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--color-primary);
}

/* Header */
.header {
    background: var(--color-white);
    padding: 0.5rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 5vh;
    min-height: 60px;
    gap: 1rem;
    flex-wrap: nowrap;
    max-width: 100%;
    overflow: hidden;
    padding: 0 15px;
}

.header__logo {
    width: 200px;
    height: 4vh;
    min-height: 50px;
    display: flex;
    align-items: center;
    padding: 0;
    flex-shrink: 0;
    max-width: 100%;
}

.header__logo a {
    display: block;
    width: 100%;
    height: 100%;
}

.header__logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.header__logo:hover img {
    transform: scale(1.05);
}

/* Navigation */
.header__nav {
    flex: 1;
    margin: 0 2rem;
    max-width: 600px;
    height: 100%;
    display: flex;
    align-items: center;
}

.header__nav-list {
    display: flex;
    justify-content: space-between;
    list-style: none;
    padding: 0;
    margin: 0;
    align-items: center;
    width: 50%;
    height: 40px;
    flex-wrap: nowrap;
    gap: 1.5rem;
}

.header__nav-list li {
    height: 100%;
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.header__nav-list a {
    color: var(--color-text);
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: 500;
    position: relative;
    transition: color 0.3s ease;
    padding: 0.5rem;
    height: 100%;
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.header__nav-list a::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.header__nav-list a:hover {
    color: var(--color-primary);
}

.header__nav-list a:hover::after {
    transform: scaleX(1);
}

.header__nav-list .eiken-link {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: bold;
    white-space: nowrap;
}

.header__nav-list .eiken-link:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(179, 0, 0, 0.2);
}

.header__nav-list .eiken-link::after {
    display: none;
}

/* Actions */
.header__actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    height: 40px;
    flex-shrink: 0;
    white-space: nowrap;
}

.header__phone {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 1.6rem;
    font-weight: bold;
    transition: color 0.3s ease;
    height: 100%;
    display: flex;
    align-items: center;
    white-space: nowrap;
}

.header__phone:hover {
    color: var(--color-primary-dark);
}

.header__info-buttons {
    display: flex;
    gap: 0.5rem;
    height: 100%;
    align-items: center;
}

.info-button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0 1rem;
    border: none;
    background: none;
    color: var(--color-text);
    font-size: 1.3rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    height: 100%;
    white-space: nowrap;
}

.info-button i {
    font-size: 1.4rem;
    color: var(--color-primary);
}

.info-button::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.info-button:hover {
    color: var(--color-primary);
}

.info-button:hover::after {
    transform: scaleX(1);
}

.info-button.active {
    color: var(--color-primary);
}

.info-button.active::after {
    transform: scaleX(1);
}

/* Info Panels */
.info-panels {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--color-white);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

.info-panels.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.info-panel {
    display: none;
    padding: 2rem;
    max-width: var(--container-width);
    margin: 0 auto;
}

.info-panel.active {
    display: block;
}

/* News List */
.quick-news-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.quick-news-item {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    padding: 0.5rem 0;
}

.quick-news-item .date {
    font-size: 1.2rem;
    color: var(--color-primary);
    font-weight: bold;
    white-space: nowrap;
}

.quick-news-item .text {
    font-size: 1.3rem;
    color: var(--color-text);
}

/* Access List */
.quick-access-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.quick-access-item {
    padding: 1rem;
    background: rgba(179, 0, 0, 0.05);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.quick-access-item:hover {
    transform: translateY(-2px);
    background: rgba(179, 0, 0, 0.1);
}

.quick-access-item h4 {
    font-size: 1.4rem;
    color: var(--color-primary);
    margin: 0 0 0.5rem 0;
}

.quick-access-item p {
    font-size: 1.2rem;
    color: var(--color-text);
    margin: 0;
    line-height: 1.4;
}


/* Hamburger Menu */
.hamburger-menu {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1001;
    flex-shrink: 0;
    margin-left: auto;
}

.hamburger-menu span {
    width: 100%;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Navigation */
.mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.95);
    z-index: 1000;
    transform: translateX(-100%);
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Mobile Navigation Close Button */
.mobile-nav__close {
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 30px;
    height: 30px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1002;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.mobile-nav__close span {
    width: 24px;
    height: 3px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all 0.3s ease;
    position: absolute;
}

.mobile-nav__close span:nth-child(1) {
    transform: rotate(45deg);
}

.mobile-nav__close span:nth-child(2) {
    transform: rotate(-45deg);
}

.mobile-nav__close:hover span {
    background: var(--color-primary-light);
}

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

.mobile-nav__content {
    width: 100vw;
    max-width: none;
    padding: 2rem;
    text-align: center;
    box-sizing: border-box;
}

.mobile-nav__list {
    list-style: none;
    padding: 0;
    margin: 0 0 3rem 0;
}

.mobile-nav__list li {
    margin-bottom: 1.5rem;
}

.mobile-nav__list a {
    color: var(--color-white);
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: 500;
    display: block;
    padding: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-nav__list a:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-primary-light);
}

.mobile-nav__contact {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
}

.mobile-nav__phone {
    color: var(--color-primary-light);
    text-decoration: none;
    font-size: 1.6rem;
    font-weight: 700;
    padding: 1rem;
    border: 2px solid var(--color-primary-light);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-nav__phone:hover {
    background: var(--color-primary-light);
    color: var(--color-white);
}

.mobile-nav__eiken {
    background: var(--color-primary);
    color: var(--color-white);
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: 700;
    padding: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.mobile-nav__eiken:hover {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.mobile-nav__instagram {
    background: linear-gradient(45deg, #f09433 0%,#e6683c 25%,#dc2743 50%,#cc2366 75%,#bc1888 100%);
    color: var(--color-white);
    text-decoration: none;
    font-size: 1.4rem;
    font-weight: 700;
    padding: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.mobile-nav__instagram:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(228, 64, 95, 0.3);
}


/* Hero */
.hero {
    margin-top: 5vh;
    height: 80vh;
    min-height: 600px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
}

.hero__bg-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero__logo-overlay {
    position: absolute;
    top: 60px;
    right: 50px;
    width: auto;
    height: 140px;
    z-index: 3;
    display: flex;
    align-items: center;
    justify-content: center;
    max-width: 100vw;
}

.hero__logo-overlay img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
    transform: scale(1.4);
    max-width: 100%;
}

.hero__bg-slider img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    transform: scale(1.1);
    animation: zoomOut 10s ease-out forwards;
    max-width: none;
}

@keyframes zoomOut {
    from { transform: scale(1.1); }
    to { transform: scale(1); }
}

.hero__bg-slider img.active {
    opacity: 1;
}

.hero__overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, 
        rgba(179, 0, 0, 0.75) 0%,
        rgba(179, 0, 0, 0.6) 50%,
        rgba(179, 0, 0, 0.3) 100%
    );
    z-index: 2;
}

.hero__content {
    position: relative;
    z-index: 3;
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    color: var(--color-white);
}

.hero__text-container {
    max-width: 800px;
    opacity: 0;
    animation: slideInLeft 1s ease-out 0.5s forwards;
}

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

.hero__headline {
    font-size: clamp(24px, 4vw, 42px);
    font-weight: 700;
    margin-bottom: var(--space-md);
    line-height: 1.6;
    font-family: 'Noto Serif JP', serif;
    position: relative;
    padding-bottom: var(--space-sm);
}

.hero__headline::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 3px;
    background: var(--color-white);
}

.hero__title {
    font-size: clamp(28px, 3.5vw, 44px);
    font-weight: 700;
    line-height: 1.5;
    margin-bottom: var(--space-md);
    font-family: 'Noto Serif JP', serif;
    letter-spacing: 0.05em;
    word-break: keep-all;
    overflow-wrap: break-word;
    white-space: normal;
    word-spacing: 0.1em;
}

.hero__subtitle {
    font-size: clamp(16px, 2.2vw, 26px);
    margin-bottom: var(--space-md);
    line-height: 1.5;
    word-break: keep-all;
    overflow-wrap: break-word;
    white-space: normal;
}

.hero__description {
    font-size: clamp(16px, 1.6vw, 22px);
    line-height: 1.7;
    margin-bottom: var(--space-lg);
    max-width: 600px;
    word-break: keep-all;
    overflow-wrap: break-word;
    white-space: normal;
}

.hero__cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    background: var(--color-white);
    color: var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    border-radius: 12px;
    font-weight: 700;
    font-size: var(--font-size-lg);
    transition: all 0.3s;
    min-width: 300px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

.hero__cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    background: var(--color-primary-dark);
    color: var(--color-white);
}

.hero__cta-button svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    transition: all 0.3s ease;
}

/* Overview */
.overview {
    min-height: auto;
    height: auto;
    padding: 100px 0;
    background: linear-gradient(135deg, rgba(179, 0, 0, 0.95), rgba(140, 0, 0, 0.95));
    position: relative;
    overflow: visible;
}

.overview::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/Japanese instructor pointing at a slide in a seminar room, blurred audience in background, deep-crimson necktie, cinematic lighting, women.png') center/cover no-repeat;
    opacity: 0.1;
    mix-blend-mode: overlay;
}

.overview .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 600px;
    gap: 1rem;
    align-items: center;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    overflow: visible;
}

.overview__content {
    padding-right: 2rem;
    padding-left: 0;
    margin: 0;
    margin-left: 0;
    position: relative;
    left: calc(-1 * var(--container-padding));
    width: calc(100% + var(--container-padding));
}

.overview__lead {
    font-size: 4.2rem;
    font-weight: 700;
    text-align: left;
    margin-bottom: 0.5rem;
    color: var(--color-white);
    position: relative;
    padding-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    line-height: 1.2;
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
}

.overview__lead::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 120px;
    height: 4px;
    background: var(--color-white);
}

.overview__description {
    max-width: 100%;
    text-align: left;
    color: var(--color-white);
    font-size: 1.8em;
    line-height: 2.2;
    word-break: keep-all;
    overflow-wrap: break-word;
    white-space: normal;
}

.overview__description p {
    opacity: 1;
    animation: fadeInUp 0.8s ease-out forwards;
    margin-bottom: 1.5rem;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    word-break: keep-all;
    overflow-wrap: break-word;
    white-space: normal;
}

.overview__image-container {
    position: relative;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0;
    transform: scale(1);
    overflow: visible;
}

.overview__image {
    position: relative;
    right: 0;
    max-width: 600px;
    height: auto;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
    animation: floatAnimation 3s ease-in-out infinite;
    transform: scale(1);
    transform-origin: center center;
    object-fit: contain;
}

.overview__image img {
    width: 100%;
    height: auto;
    display: block;
    max-width: 100%;
    object-fit: contain;
}

.overview__decoration {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
}

/* メインの成長曲線 */
.overview__growth-curve {
    position: absolute;
    width: 140%;
    height: 140%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: -1;
    pointer-events: none;
}

.overview__growth-curve::before,
.overview__growth-curve::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
}

.overview__growth-curve::before {
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.15) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    clip-path: path('M 0,80 Q 20,75 35,60 T 70,35 T 100,15');
    filter: blur(3px);
    box-shadow: 0 0 50px 30px rgba(255, 255, 255, 0.1);
    animation: glowCurveFirst 4s ease-in-out infinite;
}

.overview__growth-curve::after {
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.12) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    clip-path: path('M 0,85 Q 20,80 35,65 T 70,40 T 100,20');
    filter: blur(2px);
    box-shadow: 0 0 40px 25px rgba(255, 255, 255, 0.08);
    animation: glowCurveSecond 4s ease-in-out infinite;
    animation-delay: 2s;
}

@keyframes glowCurveFirst {
    0% {
        opacity: 0.4;
        transform: scale(1) translateY(0);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.02) translateY(-5px);
    }
    100% {
        opacity: 0.4;
        transform: scale(1) translateY(0);
    }
}

@keyframes glowCurveSecond {
    0% {
        opacity: 0.3;
        transform: scale(1) translateY(0);
    }
    50% {
        opacity: 0.6;
        transform: scale(1.01) translateY(-3px);
    }
    100% {
        opacity: 0.3;
        transform: scale(1) translateY(0);
    }
}

/* データポイントを表現する点 */
.overview__data-points {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: -1;
}

.overview__data-points::before {
    content: '';
    position: absolute;
    width: 8px;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: 40%;
    left: 30%;
    box-shadow: 
        100px -50px 0 rgba(255, 255, 255, 0.1),
        200px -100px 0 rgba(255, 255, 255, 0.1),
        300px -150px 0 rgba(255, 255, 255, 0.1);
    animation: pulsePoints 2s ease-in-out infinite alternate;
}

@keyframes moveGraph {
    from {
        transform: translate(-50px, 50px);
    }
    to {
        transform: translate(0, 0);
    }
}

@keyframes pulsePoints {
    from {
        transform: scale(1);
        opacity: 0.1;
    }
    to {
        transform: scale(1.5);
        opacity: 0.2;
    }
}





/* Services */
.services {
    padding: 100px 0;
    background: var(--color-gray);
    position: relative;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4rem;
}

.service-card {
    background: var(--color-white);
    padding: 4rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card__image {
    width: 200px;
    height: 200px;
    margin: 0 auto 2rem;
    border-radius: 50%;
    overflow: hidden;
    position: relative;
}

.service-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
    max-width: 100%;
    border-radius: 50%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.service-card:hover .service-card__image img {
    transform: scale(1.1);
}

.service-card__title {
    font-size: 2.4rem;
    margin-bottom: 2rem;
    color: var(--color-primary);
    position: relative;
    padding-bottom: 1rem;
    min-height: 120px;
    display: flex;
    align-items: flex-end;
    justify-content: center;
}

.service-card__title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background: var(--color-primary);
}

.service-card__detail {
    font-size: 1.6rem;
    color: var(--color-black);
    line-height: 2;
    flex: 1;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    text-align: left;
}

/* Strengths */
.strengths {
    padding: 100px 0;
    background: var(--color-white);
    position: relative;
}

.strengths__bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/ノートパソコンで英語学習アプリを使う若い女性.png') center/cover no-repeat fixed;
    opacity: 0.1;
}

.strengths__list {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    list-style: none;
    padding: 0;
}

.strengths__list li {
    background: var(--color-white);
    color: var(--color-black);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 10px;
    font-size: 1.8rem;
    text-align: left;
    border-left: 5px solid var(--color-primary);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    display: flex;
    align-items: center;
}

.strengths__list li:hover {
    transform: translateX(10px);
    background: var(--color-primary);
    color: var(--color-white);
}

.strength-icon {
    width: 40px;
    height: 40px;
    margin-right: 1.5rem;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.strength-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0); /* SVGを黒色に */
    transition: filter 0.3s ease;
    max-width: 100%;
}

.strengths__list li:hover .strength-icon img {
    filter: brightness(0) invert(1); /* SVGを白色に */
}


/* Achievements */
.achievements {
    padding: 100px 0;
    background: var(--color-primary);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.achievements::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../img/Four Japanese teens seated around a round table practicing English conversation with flash cards. Bookshelves in the background, bright daylight streaming in, candid expressions, vibrant yet natural color balance, documentary photo style.png') center/cover no-repeat;
    opacity: 0.1;
    filter: grayscale(100%);
}

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

.achievements .section-title::after {
    background: var(--color-white);
}

.achievements__list {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    padding: 0;
    list-style: none;
}

.achievements__item {
    background: rgba(255, 255, 255, 0.1);
    padding: 3rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.achievements__item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.achievements__icon {
    width: 80px;
    height: 80px;
    margin-bottom: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.achievements__item:hover .achievements__icon {
    transform: scale(1.1);
    background: rgba(255, 255, 255, 0.2);
}

.achievements__icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    filter: brightness(0) invert(1);
    transition: all 0.3s ease;
    max-width: 100%;
}

.achievements__item:hover .achievements__icon img {
    transform: rotate(5deg);
}

.achievements__content {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.achievements__highlight {
    font-size: 1.8rem;
    font-weight: bold;
    color: var(--color-white);
    margin-bottom: 0.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.achievements__highlight::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 30px;
    height: 2px;
    background: rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.achievements__item:hover .achievements__highlight::after {
    width: 50px;
    background: rgba(255, 255, 255, 0.5);
}

.achievements__detail {
    font-size: 1.4rem;
    color: rgba(255, 255, 255, 0.8);
}


/* Access */
.access {
    padding: var(--space-xl) 0;
    background: var(--color-white);
    position: relative;
}

.access__content {
    max-width: 800px;
    margin: 0 auto;
}

.access__schools {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

.access__school {
    background: var(--color-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    border: 2px solid rgba(179, 0, 0, 0.15);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.access__school::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-primary-dark));
}

.access__school:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px rgba(179, 0, 0, 0.15);
}

.access__school-title {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
    position: relative;
}

.access__school-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--color-primary);
    border-radius: 2px;
}

.access__school-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.access__address {
    font-size: 1.6rem;
    color: var(--color-text);
    font-weight: 600;
    line-height: 1.6;
    margin: 0;
}

.access__station {
    font-size: 1.4rem;
    color: var(--color-text);
    font-weight: 500;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.access__station::before {
    content: '\f3cd';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    font-size: 1.2rem;
    color: var(--color-primary);
}

.access__map-container {
    margin-top: 1.5rem;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    border: 1px solid rgba(179, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.access__map-container:hover {
    transform: scale(1.02);
    box-shadow: 0 6px 20px rgba(179, 0, 0, 0.15);
}

.access__map-container iframe {
    display: block;
    width: 100%;
    height: 200px;
    border: none;
    border-radius: 8px;
}


/* Contact */
.contact {
    padding: 100px 0;
    background: var(--color-gray);
    position: relative;
    overflow: hidden;
}

.contact__info {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.contact__phone {
    font-size: 3rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4rem;
    transition: all 0.3s;
}

.contact__phone:hover {
    transform: scale(1.05);
}

.contact__buttons {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 4rem;
}

.contact__button {
    display: inline-block;
    background: var(--color-primary);
    color: var(--color-white);
    padding: var(--space-md) var(--space-lg);
    border-radius: 50px;
    font-weight: 700;
    font-size: var(--font-size-lg);
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(179, 0, 0, 0.3);
    text-align: center;
    min-width: 280px;
    position: relative;
}

.contact__button:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(179, 0, 0, 0.4);
    background: var(--color-primary-dark);
}

.contact__social {
    font-size: 1.8rem;
}

.contact__social a {
    color: var(--color-primary);
    font-weight: 700;
    position: relative;
}

.contact__social a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width 0.3s;
}

.contact__social a:hover::after {
    width: 100%;
}

/* Footer */
.footer {
    padding: 60px 0;
    background: var(--color-primary);
    color: var(--color-white);
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent 45%, rgba(255, 255, 255, 0.1) 45%);
}

.footer__content {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
}

.footer__company {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer__tagline {
    font-size: 1.8rem;
    margin-bottom: 2rem;
}

.footer__social,
.footer__phone {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    transition: opacity 0.3s;
}

.footer__social:hover,
.footer__phone:hover {
    opacity: 0.8;
}

.footer__copyright {
    text-align: center;
    font-size: 1.4rem;
    opacity: 0.8;
    position: relative;
}

/* Responsive */

/* Intersection Observer Animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

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

/* Background Patterns */
.pattern-dots {
    background-image: radial-gradient(var(--color-primary) 1px, transparent 1px);
    background-size: 20px 20px;
}

.pc-only {
    display: inline;
}

.sp-only {
    display: none;
}

@media (max-width: 768px) {
    .pc-only {
        display: none;
    }

    .sp-only {
        display: inline;
    }
}

/* Animation Effects */
@keyframes floatAnimation {
    0% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0); }
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-float {
    animation: floatAnimation 3s ease-in-out infinite;
}

.animate-fade-in {
    opacity: 0;
    transform: scale(0.9);
    animation: fadeInScale 0.8s ease-out forwards;
}

.animate-fade-in.delay-1 { animation-delay: 0.2s; }
.animate-fade-in.delay-2 { animation-delay: 0.4s; }
.animate-fade-in.delay-3 { animation-delay: 0.6s; }

/* Parallax Effect */
.parallax-bg {
    background-attachment: fixed;
    background-position: center;
    background-repeat: no-repeat;
    background-size: cover;
    position: relative;
}

/* Glass Morphism Effect */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* Hover Effects */
.hover-lift {
    transition: transform 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-scale {
    transition: transform 0.3s ease;
}

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

/* Contact Section */
.contact {
    padding: var(--space-xl) 0;
    background: var(--color-white);
}

/* Contact Form Styles */
.contact {
    padding: 80px 0;
    background-color: #f9f9f9;
}

.contact-description {
    text-align: center;
    margin-bottom: 40px;
    color: #666;
    line-height: 2;
}

.contact-form {
    max-width: 800px;
    margin: 0 auto;
    padding: 30px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: #4A90E2;
    outline: none;
}

.required {
    color: #e74c3c;
    margin-left: 4px;
}

.privacy-policy {
    display: flex;
    align-items: center;
    gap: 8px;
}

.privacy-policy input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.privacy-policy label {
    margin-bottom: 0;
    font-size: 14px;
}

.privacy-policy a {
    color: #4A90E2;
    text-decoration: underline;
}

.submit-group {
    text-align: center;
    margin-top: 40px;
}

.submit-button {
    background-color: var(--color-primary);
    color: white;
    padding: 25px 40px;
    width: 100%;
    max-width: 400px;
    border: none;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 6px 20px rgba(179, 0, 0, 0.4);
    letter-spacing: 1px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
}

.submit-button:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(179, 0, 0, 0.5);
}

.submit-button svg {
    width: 20px;
    height: 20px;
    stroke: currentColor;
    transition: all 0.3s ease;
}

.contact__note {
    text-align: center;
    margin-top: 20px;
    color: #666;
    font-size: 14px;
    font-style: italic;
}

/* Status Messages */
#status {
    margin-top: 20px;
}

#status .success {
    color: #22c55e;
    background: #f0fdf4;
    border: 1px solid #22c55e;
    padding: 16px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
}

#status .error {
    color: #ef4444;
    background: #fef2f2;
    border: 1px solid #ef4444;
    padding: 16px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
}

#status .sending {
    color: #3b82f6;
    background: #eff6ff;
    border: 1px solid #3b82f6;
    padding: 16px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
}

/* Responsive adjustments */

/* Contact Info Styles */
.contact__info {
    text-align: center;
    margin-bottom: 40px;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.contact__phone {
    font-size: 18px;
    margin-bottom: 20px;
}

.contact__phone a {
    color: #FF4B4B;
    font-weight: bold;
    text-decoration: none;
}

.contact__buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.contact__button {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 15px 30px;
    color: white;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    transition: all 0.3s ease;
    width: 100%;
}

.contact__button i {
    font-size: 20px;
}

.contact__button--phone {
    background-color: #FF4B4B;
}

.contact__button--line {
    background-color: #00B900;
}



.contact__button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.contact__social {
    font-size: 16px;
}

.contact__social a {
    color: #E1306C;
    font-weight: bold;
    text-decoration: none;
}

/* Responsive adjustments for contact info */

.eiken-official-link {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 0 1.5rem;
    border-radius: 6px;
    transition: all 0.3s ease;
    text-decoration: none;
    font-weight: bold;
    white-space: nowrap;
    font-size: 1.4rem;
    height: 100%;
    display: flex;
    align-items: center;
}

.header__instagram {
    color: var(--color-primary);
    font-size: 2.4rem;
    transition: all 0.3s ease;
    text-decoration: none;
    height: 100%;
    display: flex;
    align-items: center;
    padding: 0 0.5rem;
}

.header__instagram:hover {
    color: #E4405F;
    transform: scale(1.1);
}

.eiken-official-link:hover {
    background-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(179, 0, 0, 0.2);
}

/* ==========================================================================
   RESPONSIVE MEDIA QUERIES
   統合されたメディアクエリ - min-width昇順で配置
   ========================================================================== */

/* Mobile & Small Tablets: 768px以下 */
@media (max-width: 768px) {
    /* 基本設定 */
    body {
        overflow-x: hidden !important;
        width: 100% !important;
    }

    .container {
        padding: 0 15px !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    /* Header */
    .header__nav,
    .header__actions,
    .eiken-official-link,
    .header__instagram {
        display: none !important;
    }

    .hamburger-menu {
        display: flex !important;
    }

    .header__logo {
        width: 160px !important;
        height: 70px !important;
        margin-left: -50px !important;
    }

    .header__content {
        height: 80px !important;
        padding: 0 15px !important;
    }

    /* Hero Section */
    .hero {
        height: 80vh !important;
        min-height: 500px !important;
    }

    .hero__content {
        padding: 0 15px !important;
    }

    .hero__text-container {
        max-width: 100% !important;
        overflow-wrap: break-word !important;
        word-wrap: break-word !important;
    }

    .hero__title {
        font-size: 2.2rem !important;
        line-height: 1.4 !important;
        word-break: keep-all !important;
        overflow-wrap: break-word !important;
        white-space: normal !important;
        word-spacing: 0.1em !important;
    }

    .hero__subtitle {
        font-size: 1.3rem !important;
        word-break: keep-all !important;
        overflow-wrap: break-word !important;
        white-space: normal !important;
    }

    .hero__description {
        font-size: 1.1rem !important;
        line-height: 1.7 !important;
        word-break: keep-all !important;
        overflow-wrap: break-word !important;
        white-space: normal !important;
    }

    .hero__logo-overlay {
        display: none !important;
    }

    /* Section Titles */
    .section-title {
        font-size: 2.8rem !important;
    }

    /* Overview Section */
    .overview {
        padding: 60px 0 !important;
        width: 100% !important;
        max-width: 100vw !important;
        overflow-x: hidden !important;
        box-sizing: border-box !important;
    }

    .overview .container {
        display: flex !important;
        flex-direction: column !important;
        text-align: center !important;
        gap: 2rem !important;
        padding: 0 15px !important;
        align-items: center !important;
        position: relative !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .overview__content {
        margin: 0 !important;
        order: 1 !important;
        z-index: 2 !important;
        padding: 0 !important;
        width: 100% !important;
        box-sizing: border-box !important;
        max-width: 100% !important;
    }

    .overview__image-container {
        height: 250px !important;
        margin: 2rem 0 0 0 !important;
        transform: none !important;
        order: 2 !important;
        position: relative !important;
        right: auto !important;
        top: auto !important;
        width: 100% !important;
        max-width: 100% !important;
        z-index: 1 !important;
        display: flex !important;
        justify-content: center !important;
        align-items: center !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
    }

    .overview__lead {
        font-family: 'Noto Serif JP', serif !important;
        font-size: 2.2rem !important;
        font-weight: 700 !important;
        text-align: center !important;
        margin-bottom: 3rem !important;
        color: var(--color-white) !important;
        position: relative !important;
        padding-bottom: 1.5rem !important;
        line-height: 1.4 !important;
        width: 100% !important;
        max-width: 100% !important;
        white-space: normal !important;
        overflow: visible !important;
        z-index: 2 !important;
        word-break: keep-all !important;
        overflow-wrap: break-word !important;
        box-sizing: border-box !important;
        padding-left: 15px !important;
        padding-right: 15px !important;
    }

    .overview__lead::after {
        content: '' !important;
        position: absolute !important;
        bottom: 0 !important;
        left: 50% !important;
        transform: translateX(-50%) !important;
        width: 60px !important;
        height: 3px !important;
        background: var(--color-white) !important;
    }

    .overview__description {
        text-align: center !important;
        font-size: 1.1rem !important;
        line-height: 1.8 !important;
        position: relative !important;
        z-index: 2 !important;
        word-break: keep-all !important;
        overflow-wrap: break-word !important;
        white-space: normal !important;
        max-width: 100% !important;
        width: 100% !important;
        margin: 0 auto !important;
        padding: 0 15px !important;
        box-sizing: border-box !important;
        color: var(--color-white) !important;
    }

    .overview__description p {
        margin-bottom: 1.5rem !important;
        word-break: keep-all !important;
        overflow-wrap: break-word !important;
        white-space: normal !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .overview__image {
        position: relative !important;
        right: auto !important;
        top: auto !important;
        transform: none !important;
        max-width: 280px !important;
        width: 100% !important;
        height: auto !important;
        object-fit: contain !important;
        margin: 0 auto !important;
        box-sizing: border-box !important;
    }

    .overview__growth-curve {
        width: 120% !important;
        height: 120% !important;
    }

    .overview__growth-curve::before,
    .overview__growth-curve::after {
        opacity: 0.3 !important;
    }

    /* Services Section */
    .services {
        padding: 60px 0 !important;
    }

    .services__grid {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
    }

    .service-card__title {
        min-height: auto !important;
        font-size: 2rem !important;
    }

    /* Strengths Section */
    .strengths {
        padding: 60px 0 !important;
    }

    .strengths__list li {
        font-size: 1.6rem !important;
        padding: 1.5rem !important;
    }

    .strength-icon {
        width: 30px !important;
        height: 30px !important;
        margin-right: 1rem !important;
    }

    /* Achievements Section */
    .achievements {
        padding: 60px 0 !important;
    }

    .achievements__list {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
        padding: 0 var(--space-md) !important;
    }

    .achievements__item {
        padding: 2rem !important;
    }

    .achievements__icon {
        width: 60px !important;
        height: 60px !important;
        margin-bottom: 1.5rem !important;
        padding: 1.2rem !important;
    }

    .achievements__highlight {
        font-size: 1.6rem !important;
    }

    .achievements__detail {
        font-size: 1.2rem !important;
    }

    /* Access Section */
    .access {
        padding: 60px 0 !important;
    }

    .access__schools {
        grid-template-columns: 1fr !important;
        gap: 2rem !important;
        margin-top: 2rem !important;
        padding: 0 15px !important;
    }

    .access__school {
        padding: 2rem !important;
    }

    .access__school-title {
        font-size: 2.2rem !important;
    }

    .access__address {
        font-size: 1.5rem !important;
    }

    .access__station {
        font-size: 1.3rem !important;
    }

    .access__map-container {
        margin-top: 1rem !important;
    }

    .access__map-container iframe {
        height: 180px !important;
    }

    /* Contact Section */
    .contact {
        padding: 60px 0 !important;
    }

    .contact .container {
        padding: 0 15px !important;
    }

    .contact__buttons {
        flex-direction: column !important;
        gap: 10px !important;
        padding: 0 var(--container-padding) !important;
    }

    .contact__button {
        width: 100% !important;
        text-align: center !important;
    }

    /* Contact Form */
    .contact-form {
        padding: 20px !important;
    }

    .form-group input[type="text"],
    .form-group input[type="email"],
    .form-group input[type="tel"],
    .form-group select,
    .form-group textarea {
        padding: 10px !important;
        font-size: 14px !important;
    }

    .submit-button {
        width: 100% !important;
        padding: 12px !important;
    }

    /* General Elements */
    .quick-access-list {
        grid-template-columns: 1fr !important;
    }
}

/* Medium Tablets: 1024px以下 */
@media (max-width: 1024px) {
    /* Header */
    .header__nav {
        margin: 0 1rem !important;
    }

    .header__nav-list {
        gap: 1rem !important;
    }

    .header__actions {
        gap: 1rem !important;
    }

    .header__phone {
        font-size: 1.4rem !important;
    }

    .info-button {
        padding: 0 0.8rem !important;
        font-size: 1.2rem !important;
    }

    .eiken-official-link {
        padding: 0 1.2rem !important;
        font-size: 1.3rem !important;
    }

    /* Overview Section */
    .overview .container {
        grid-template-columns: 1fr 400px !important;
        gap: 3rem !important;
    }

    .overview__image {
        max-width: 400px !important;
    }


    .overview__description {
        font-size: 1.2em !important;
    }
}

/* Large Tablets: 1200px以下 */
@media (max-width: 1200px) {
    .overview__growth-curve {
        width: 160% !important;
        height: 160% !important;
    }
}

/* Large Desktop: 1400px以下 */
@media (max-width: 1400px) {
    .overview .container {
        grid-template-columns: 1fr 450px !important;
        gap: 4rem !important;
    }

    .overview__image {
        max-width: 450px !important;
    }


    .overview__description {
        font-size: 1.3em !important;
    }
}

/* 極小スマホサイズ: 480px以下 */
@media (max-width: 480px) {
    .overview__lead {
        font-size: 1.8rem !important;
        line-height: 1.3 !important;
        margin-bottom: 2rem !important;
        padding-left: 10px !important;
        padding-right: 10px !important;
    }

    .overview__description {
        text-align: center !important;
        font-size: 1rem !important;
        line-height: 1.6 !important;
        padding: 0 10px !important;
    }

    .overview {
        padding: 40px 0 !important;
    }

    .overview .container {
        display: flex !important;
        flex-direction: column !important;
        padding: 0 10px !important;
        gap: 1.5rem !important;
        align-items: center !important;
        box-sizing: border-box !important;
    }

    .section-title {
        font-size: 2.2rem !important;
    }
}