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

body {
    font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
    color: #ffffff;
    line-height: 1.6;
    overflow-x: hidden;
    background-color: #ffffff;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
    max-width: 100%;
    margin: 0;
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    padding: 0;
    width: 100%;
    height: 100%;
}

.header-container .logo {
    flex-shrink: 0;
    padding-left: 2rem;
    display: flex;
    align-items: center;
}

.header-container .nav {
    flex-shrink: 0;
    margin-left: auto;
    display: flex;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #1a1a1a;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-image {
    height: 24px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    height: 24px;
    width: auto;
    object-fit: contain;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: #2196F3;
    border: none;
    padding: 12px;
    cursor: pointer;
    z-index: 1001;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: #ffffff;
    border-radius: 2px;
    transition: all 0.3s;
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

.nav {
    display: flex;
    gap: 3rem;
    align-items: center;
}

.nav-link {
    color: #1a1a1a;
    text-decoration: none;
    font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
    font-size: 14px;
    font-weight: bold;
    transition: color 0.3s;
    padding-right: 0;
    white-space: nowrap;
}

.nav-link:hover {
    color: #2196F3;
}

.nav-separator {
    display: none;
}

.contact-btn {
    background: #1976D2;
    padding: 0.5rem 0.5rem;
    border-radius: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
    color: #ffffff;
    margin-top: -1rem;
    margin-bottom: -1rem;
    align-self: stretch;
}

.contact-btn:hover {
    background: #2196F3;
    color: #ffffff;
}

.icon {
    width: 20px;
    height: 20px;
    display: inline-block;
    flex-shrink: 0;
    vertical-align: middle;
}

.contact-btn .icon {
    width: 20px;
    height: 20px;
}

.contact-btn .icon .header-mail-icon {
    fill: #ffffff;
    stroke: #ffffff;
    stroke-width: 2px;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a1929 0%, #1a2332 100%);
    padding-top: 100px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    opacity: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: left;
    max-width: 1600px;
    width: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: calc(100vh - 500px);
    padding: 0 2rem;
}

.hero-title {
    font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
    font-size: 70px;
    font-weight: bold;
    line-height: 1.3;
    margin-bottom: 1.5rem;
    color: #ffffff;
    text-shadow: 0 2px 15px rgba(0, 0, 0, 0.9), 0 0 8px rgba(0, 0, 0, 0.7), 0 1px 3px rgba(0, 0, 0, 0.8);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.hero-title-support {
    font-size: 50px;
    text-shadow: 0 2px 15px rgba(0, 0, 0, 0.9), 0 0 8px rgba(0, 0, 0, 0.7), 0 1px 3px rgba(0, 0, 0, 0.8);
}

.hero-title-mobile {
    display: none;
}

.hero-title-desktop {
    display: block;
}

.hero-subtitle {
    font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
    font-size: 21px;
    margin-bottom: 0;
    color: #ffffff;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.7), 0 0 6px rgba(0, 0, 0, 0.5);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    font-weight: bold;
}

.responsive-br {
    display: none;
}

.hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    background: #F86090;
    color: #ffffff;
    padding: 1.2rem 3rem;
    border-radius: 50px;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: bold;
    transition: transform 0.3s, box-shadow 0.3s;
    box-shadow: 0 4px 15px rgba(248, 96, 144, 0.4);
    align-self: flex-start;
    margin-top: 2rem;
    margin-bottom: 4rem;
}

.hero-cta-icon-wrapper {
    width: 20px;
    height: 20px;
    background: transparent;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.hero-cta-icon-wrapper .icon {
    width: 28px;
    height: 28px;
}

.hero-cta-icon-wrapper .icon .mail-icon {
    fill: #ffffff;
    stroke: url(#iconStrokeGradient);
    stroke-width: 2px;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(248, 96, 144, 0.6);
}

.dx-intro {
    background-color: #ffffff;
    padding: 5.5rem 2rem;
    position: relative;
    overflow: hidden;
}

.dx-intro-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    min-height: calc(100% - 6rem);
}

.dx-graphic {
    position: absolute;
    left: -100px;
    transform: translateY(-50%) scaleX(1.3);
    font-size: 45rem;
    font-weight: 900;
    color: rgba(33, 150, 243, 0.1);
    top: 180px;
    left: -50px;
    z-index: 1;
    display: flex;
    pointer-events: none;
}

.dx-graphic .dx-large-text {
    line-height: 1;
}

.dx-graphic .dx-large-text {
    display: flex;
    line-height: 1;
    left: -100px;
}

.dx-graphic-image {
    display: none;
}

.dx-intro-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    margin-left: auto;
}

.dx-intro-text {
    color: #1a1a1a;
    position: relative;
    left: -200px;
    font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
}

.dx-intro-text .section-title {
    color: #1a1a1a;
    text-align: left;
}

.section-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ffffff;
    text-align: center;
}

.section-title-underline {
    width: 50px;
    height: 4px;
    background: #A4C15D;
    margin: 0 auto 1rem;
}

.title-underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, #A4C15D 0%, #2196F3 100%);
    margin-bottom: 2rem;
}

.dx-definition {
    font-size: 16px;
    line-height: 1.8;
    color: #333;
    font-weight: 500;
}

.dx-definition br {
    display: block;
}

.green-deco-right {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: x;
    z-index: 1;
}

/* Improvements Section */
.improvements {
    background: linear-gradient(135deg, #263238 0%, #1a1a1a 100%);
    padding: 6rem 2rem;
    position: relative;
    overflow: hidden;
}

.improvements::before,
.improvements::after {
    content: '';
    position: absolute;
    width: 200px;
    height: 100%;
    top: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.3;
}

.improvements::before {
    left: 0;
}

.improvements::after {
    right: 0;
}

.section-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.worries .section-container {
    max-width: 100%;
    padding: 0;
}

.section-subtitle {
    font-size: 1.5rem;
    color: #A4C15D;
    margin-bottom: 0.5rem;
    margin-top: 0.5rem;
    font-weight: 600;
    text-align: center;
}

.section-subtitle-underline {
    width: 100px;
    height: 3px;
    background: #A4C15D;
    margin: 0 auto 3rem;
}

.improvements-image {
    text-align: center;
    margin-top: 5rem;
}

.improvements-icons-desktop {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    gap: 3rem;
    flex-wrap: wrap;
    max-width: 1200px;
    margin: 0 auto;
}

.improvements-icons-mobile {
    display: none;
}

.improvement-item-icon {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    flex: 0 0 auto;
}

.improvement-icon-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: #2a2a2a;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.improvement-icon-img {
    width: 100%;
    height: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.improvement-icon-circle svg.improvement-icon-img {
    filter: none;
    width: 100%;
    height: 100%;
    max-width: 90px;
    max-height: 90px;
    margin: auto;
}

.improvements-icons-desktop .improvement-item-icon:first-child .improvement-icon-circle svg.improvement-icon-img,
.improvements-icons-mobile .improvement-item-icon:first-child .improvement-icon-circle svg.improvement-icon-img,
.improvements-icons-desktop .improvement-item-icon:nth-child(2) .improvement-icon-circle svg.improvement-icon-img,
.improvements-icons-mobile .improvement-item-icon:nth-child(2) .improvement-icon-circle svg.improvement-icon-img {
    transform: translateX(-5px);
}

.improvements-icons-desktop .improvement-item-icon:nth-child(4) .improvement-icon-circle svg.improvement-icon-img,
.improvements-icons-mobile .improvement-item-icon:nth-child(4) .improvement-icon-circle svg.improvement-icon-img {
    transform: translateX(10px);
}

.improvement-icon-text {
    color: #ffffff;
    font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
    font-size: 1rem;
    line-height: 1.6;
    text-align: center;
    margin: 0;
    font-weight: 500;
    max-width: 160px;
}

.improvements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-top: 3rem;
}

.improvement-item {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.improvement-icon {
    width: 120px;
    height: 120px;
    border: 3px solid #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    transition: transform 0.3s, box-shadow 0.3s;
}

.improvement-icon:hover {
    transform: scale(1.1);
    box-shadow: 0 0 20px rgba(76, 175, 80, 0.5);
}

.improvement-icon img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.improvement-text {
    font-size: 1rem;
    color: #ffffff;
    line-height: 1.6;
}

/* Worries Section */
.worries {
    background: #2a2a2a;
    padding: 6rem 2rem;
    position: relative;
    overflow: hidden;
    min-height: 100vh;
}

.worries-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.worries-bg-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.6);
}

.worries .section-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
}

.worries-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 4rem;
    align-items: start;
    margin-top: 3rem;
    position: relative;
    z-index: 2;
    justify-items: end;
}

.worries-image {
    width: 100%;
    margin: 0;
    padding: 0;
}

.worries-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.worries-text {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    text-align: right;
    max-width: 600px;
    margin-left: auto;
}

.worries-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.worry-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0;
    background: transparent;
    border-radius: 0;
    transition: none;
}

.worry-item:hover {
    background: transparent;
}

.check-icon {
    width: 30px;
    height: 30px;
    display: block;
    flex-shrink: 0;
    object-fit: contain;
}

.worry-text {
    font-size: 1.7rem;
    color: #ffffff;
    font-weight: bold;
}

.worries-conclusion {
    margin-top: 8rem;
    text-align: center;
    padding: 0;
    background: transparent;
    border-radius: 0;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
    font-weight: bold;
}

.worries-conclusion p {
    font-size: 1.8rem;
    line-height: 1.8;
    color: #ffffff;
}

/* Uniqueness Section */
.uniqueness {
    background: #ffffff;
    padding: 0;
    position: relative;
    overflow: hidden;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.uniqueness-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.uniqueness-bg-image {
    padding: 1rem;
    width: 95%;
    height: 100%;
    object-fit: contain;
    object-position: center;
}

.uniqueness .section-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    width: 100%;
}

.uniqueness-content {
    text-align: center;
    color: #ffffff;
}

.uniqueness-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #ffffff;
}

.uniqueness-title-underline {
    width: 100px;
    height: 2px;
    background: #ffffff;
    margin: 0 auto 3rem;
}

.uniqueness-main-text {
    font-size: 2rem;
    font-weight: bold;
    line-height: 1.4;
    margin-bottom: 2rem;
    color: #ffffff;
}

.uniqueness-sub-text {
    font-size: 2rem;
    font-weight: bold;
    line-height: 1.4;
    margin-bottom: 2rem;
    color: #ffffff;
}

/* Process Section */
.process {
    background-color: #ffffff;
    padding: 6rem 2rem;
    position: relative;
    overflow: hidden;
}

.process .section-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.process-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 1rem;
    color: #1a1a1a;
    text-align: center;
}

.process-title-underline {
    width: 50px;
    height: 4px;
    background: #A4C15D;
    margin: 0 auto 1rem;
}

.process-subtitle {
    font-size: 1.5rem;
    color: #A4C15D;
    margin-bottom: 4rem;
    font-weight: 600;
    text-align: center;
}

.process-steps {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 3rem;
    margin-left: 3rem;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
    flex: 1;
    min-width: 150px;
    max-width: 200px;
}

.process-step-circle {
    width: 120px;
    height: 120px;
    border: 3px solid #A4C15D;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    transition: transform 0.3s, box-shadow 0.3s;
}

.process-step-circle:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(164, 193, 93, 0.4);
}

.process-step-icon {
    width: 3rem;
    height: 3rem;
    object-fit: contain;
    display: block;
}

.process-step-text {
    font-size: 1.2rem;
    color: #1a1a1a;
    font-weight: 600;
    text-align: center;
    line-height: 1.4;
}

.process-arrow {
    font-size: 2rem;
    color: #A4C15D;
    font-weight: bold;
    flex-shrink: 0;
}

/* Compatible Apps Section */
.compatible-apps {
    background: #ffffff;
    padding: 6rem 2rem;
    position: relative;
    overflow: hidden;
    min-height: 80vh;
}

.compatible-apps-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.compatible-apps-bg-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    filter: blur(3px);
}

.compatible-apps-bg-desktop {
    display: block;
}

.compatible-apps-bg-mobile {
    display: none;
}

.compatible-apps .section-container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
}

.compatible-apps-content {
    padding: 1rem 3rem;
    border-radius: 20px;
}

.compatible-apps-title {
    font-size: 2.5rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #1a1a1a;
    text-align: center;
}

.compatible-apps-subtitle {
    font-size: 1.5rem;
    color: #A4C15D;
    margin-bottom: 1rem;
    font-weight: 600;
    text-align: center;
}

.compatible-apps-underline {
    width: 50px;
    height: 4px;
    background: #A4C15D;
    margin: 0 auto 3rem;
}

.compatible-apps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.compatible-app-card {
    background: #ffffff;
    border: 2px solid #A4C15D;
    border-radius: 15px;
    padding: 2.5rem 2rem;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.compatible-app-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(164, 193, 93, 0.3);
}

.app-card-title {
    font-size: 1.8rem;
    font-weight: bold;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
}

.app-card-subtitle {
    font-size: 1rem;
    color: #1a1a1a;
    font-weight: 500;
}

/* Contact Form Section */
.contact-form-section {
    position: relative;
    padding: 0px 40px 120px;
    min-height: 100vh;
    display: flex;
    align-items: flex-start;
    z-index: 100;
    overflow: visible;
    max-width: 100%;
    width: 100%;
}

.contact-form-section::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 100%;
    background: linear-gradient(to bottom, 
        transparent 0%,
        transparent 50%,
        rgba(245, 245, 245, 0.3) 70%,
        rgba(245, 245, 245, 0.6) 85%,
        rgba(245, 245, 245, 0.9) 95%,
        #f5f5f5 100%);
    z-index: 1;
    pointer-events: none;
}

.contact-form-container {
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 10;
}

.contact-page-header {
    margin-bottom: 2rem;
    text-align: center;
}

.contact-page-title {
    font-size: 2.5rem;
    font-weight: bold;
    color: #1a1a1a;
    margin-bottom: 0.5rem;
    text-align: center;
}

.contact-page-underline {
    width: 50px;
    height: 4px;
    background: #A4C15D;
    margin: 0 auto 1rem;
}

.contact-page-subtitle {
    font-size: 1.5rem;
    color: #A4C15D;
    margin-bottom: .5rem;
    font-weight: 600;
    text-align: center;
}

.contact-form-content {
    padding: 0px 40px 60px;
}

.contact-form-intro {
    font-size: 16px;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-form-form {
    display: flex;
    flex-direction: column;
}

.form-field {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    padding-top: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #e0e0e0;
}

.form-field-last {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    padding-top: 20px;
    padding-bottom: 5px;
}

.form-field:last-of-type {
    border-bottom: none;
}

.checkbox-field {
    flex-direction: row;
    align-items: flex-start;
    gap: 12px;
    margin-left: 200px;
    border-bottom: none;
    padding-bottom: 0;
}

.checkbox-field .checkbox-label {
    margin-left: 0;
}

.form-label {
    font-size: 16px;
    font-weight: 400;
    color: #222222;
    display: flex;
    align-items: center;
    min-width: 200px;
    flex-shrink: 0;
}

.form-label-text {
    color: #222222;
    font-weight: bold;
}

.form-input-wrapper,
.form-textarea-wrapper {
    flex: 1;
    display: flex;
    align-items: flex-start;
    gap: 8px;
    position: relative;
}

.form-badge {
    font-size: 10px;
    padding: 2px 8px;
    border-radius: 10px;
    font-weight: 400;
    white-space: nowrap;
    flex-shrink: 0;
    margin-top: 12px;
    letter-spacing: 0;
}

.form-badge.required {
    background: #F1786B;
    color: #ffffff;
}

.form-badge.optional {
    background: #C7C7C7;
    color: #ffffff;
}

.form-input,
.form-textarea {
    flex: 1;
    padding: 12px;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-size: 16px;
    font-family: inherit;
    font-weight: 400;
    color: #222222;
    transition: border-color 0.3s;
    background-color: #fff;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: #999;
}

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    cursor: pointer;
}

.form-checkbox {
    width: 20px;
    height: 20px;
    cursor: pointer;
    margin-top: 2px;
    flex-shrink: 0;
    background-color: #2196F3;
}

.checkbox-text {
    font-size: 16px;
    color: #222222;
    line-height: 1.6;
}

.form-submit-btn {
    width: 200px;
    padding: 12px 32px;
    background: linear-gradient(90deg, #4ADFCB 0%, #00BCD4 100%);
    color: #ffffff;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 400;
    cursor: pointer;
    transition: opacity 0.3s, transform 0.3s;
    margin-top: 8px;
    margin-left: auto;
    margin-right: auto;
    display: block;
}

.form-submit-btn:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.form-submit-btn:active {
    transform: translateY(0);
    opacity: 0.8;
}

.form-submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.privacy-link-btn {
    background: none;
    border: none;
    color: #2196F3;
    text-decoration: underline;
    cursor: pointer;
    font-size: 14px;
    padding: 0;
    margin-left: 4px;
    font-family: inherit;
}

.privacy-link-btn:hover {
    color: #1976D2;
}

/* Privacy Policy Modal */
.privacy-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.privacy-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.privacy-modal-content {
    background-color: #ffffff;
    margin: auto;
    border-radius: 10px;
    width: 90%;
    max-width: 800px;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    animation: modalFadeIn 0.3s;
}

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

.privacy-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 2rem 1rem;
    border-bottom: 2px solid #e0e0e0;
}

.privacy-modal-header h2 {
    margin: 0;
    font-size: 1.8rem;
    color: #1a1a1a;
}

.privacy-modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: #666;
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.privacy-modal-close:hover {
    background-color: #f0f0f0;
    color: #1a1a1a;
}

.privacy-modal-body {
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
}

.privacy-update-date {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    text-align: right;
}

.privacy-section {
    margin-bottom: 2rem;
}

.privacy-section h3 {
    font-size: 1.3rem;
    color: #1a1a1a;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #A4C15D;
}

.privacy-section p {
    line-height: 1.8;
    color: #333;
    margin-bottom: 1rem;
}

.privacy-section ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.privacy-section li {
    line-height: 1.8;
    color: #333;
    margin-bottom: 0.5rem;
}

.privacy-modal-footer {
    padding: 1rem 2rem 2rem;
    border-top: 2px solid #e0e0e0;
    text-align: center;
}

.privacy-modal-close-btn {
    background: linear-gradient(90deg, #2196F3 0%, #A4C15D 100%);
    color: #ffffff;
    border: none;
    border-radius: 50px;
    padding: 0.8rem 3rem;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
}

.privacy-modal-close-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.4);
}

/* Footer */
.footer {
    background: #000000;
    padding: 2rem;
    text-align: center;
}

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

.footer-text {
    margin-top: 1rem;
    color: #888;
    font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        overflow-x: hidden;
    }

    body {
        font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
        overflow-x: hidden;
        max-width: 100vw;
    }

    .header {
        padding: 0 0 0 1rem;
    }

    .header-container {
        padding: 0 0 0 0.2rem;
    }

    .header-container .logo {
        padding-left: 0;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: flex-start;
        align-items: flex-start;
        padding: 80px 2rem 2rem;
        gap: 1.5rem;
        transition: right 0.3s ease;
        box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
        z-index: 1000;
    }

    .nav.active {
        right: 0;
    }

    .nav-link {
        width: 100%;
        padding: 0.75rem 0;
        border-bottom: 1px solid #e0e0e0;
    }

    .nav-separator {
        width: 100%;
        height: 0;
        margin: 0;
        padding: 0;
        border: none;
        display: none;
    }

    .nav-link.contact-btn {
        background: transparent;
        padding: 0.75rem 0;
        border-radius: 0;
        color: #1a1a1a;
        margin-top: 0;
        margin-bottom: 0;
    }

    .nav-link.contact-btn:hover {
        background: transparent;
        color: #2196F3;
    }

    .nav-link.contact-btn .icon {
        display: none;
    }

    .hero {
        padding-top: 90px;
        min-height: auto;
        padding-bottom: 4rem;
    }

    .hero-bg-image {
        object-position: center;
    }

    .hero-content {
        padding: 3rem 1.5rem;
        min-height: auto;
        justify-content: flex-start;
        text-align: left;
    }

    .hero-title {
        font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
        font-size: 45px;
        font-weight: bold;
        line-height: 1.3;
        margin-bottom: 2rem;
        text-align: left;
        letter-spacing: 0.02em;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        text-rendering: optimizeLegibility;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5), 0 0 2px rgba(0, 0, 0, 0.3);
    }

    .hero-title-desktop {
        display: none;
    }

    .hero-title-mobile {
        display: block;
        text-shadow: 0 2px 15px rgba(0, 0, 0, 0.9), 0 0 8px rgba(0, 0, 0, 0.7), 0 1px 3px rgba(0, 0, 0, 0.8);
    }

    .hero-title-mobile .hero-title-support {
        font-size: 30px;
    }

    .hero-subtitle {
        font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
        font-size: 1.3rem;
        font-weight: 600;
        line-height: 1.6;
        margin-bottom: 2.5rem;
        text-align: left;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        text-rendering: optimizeLegibility;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5), 0 0 2px rgba(0, 0, 0, 0.3);
    }

    .responsive-br {
        display: block;
    }

    .hero-cta {
        width: 100%;
        padding: 1.2rem 2.5rem;
        font-size: 1.1rem;
        font-weight: 700;
        margin-top: 1rem;
        margin-bottom: 2rem;
        align-self: stretch;
        justify-content: center;
    }

    .dx-intro {
        padding: 2rem 0.75rem;
        overflow-x: hidden;
        overflow-y: visible;
    }

    .dx-intro-container {
        flex-direction: column;
        align-items: flex-start;
        overflow-x: hidden;
        overflow-y: visible;
    }

    .dx-graphic {
        position: relative;
        left: auto;
        top: auto;
        text-align: center;
        margin-bottom: 0;
        order: 2;
        width: 100%;
        overflow-x: hidden;
        overflow-y: visible;
    }

    .dx-graphic .dx-large-text {
        display: none;
    }

    .dx-graphic-image {
        display: block;
        width: 107%;
        margin-top: 10px;
        margin-right: 5rem;
        height: auto;
        object-fit: contain;
    }

    .dx-intro-content {
        margin-left: 0;
        max-width: 100%;
        order: 1;
    }

    .dx-intro-text {
        left: 0;
    }

    .dx-intro-text .section-title {
        font-size: 1.8rem;
        margin-bottom: 0.75rem;
    }

    .title-underline {
        width: 60px;
        margin-bottom: 1.5rem;
    }

    .dx-definition {
        font-size: 1rem;
        line-height: 1.8;
    }

    .dx-definition br {
        display: block;
    }

    .improvements {
        padding: 4rem 1.5rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1.2rem;
    }

    .improvements-image {
        margin-top: 3rem;
    }

    .improvements-icons-desktop {
        display: none;
    }

    .improvements-icons-mobile {
        display: flex;
        flex-direction: row;
        flex-wrap: wrap;
        gap: 2rem;
        max-width: 600px;
        margin: 0 auto;
        align-items: flex-start;
        justify-content: center;
    }

    .improvements-icons-mobile .improvement-item-icon:nth-child(-n+3) {
        flex: 0 0 calc((100% - 4rem) / 3);
        min-width: 0;
    }

    .improvements-icons-mobile .improvement-item-icon:nth-child(1),
    .improvements-icons-mobile .improvement-item-icon:nth-child(2),
    .improvements-icons-mobile .improvement-item-icon:nth-child(3) {
        display: flex;
    }

    .improvements-icons-mobile .improvement-item-icon:nth-child(4),
    .improvements-icons-mobile .improvement-item-icon:nth-child(5) {
        flex: 0 0 auto;
        display: flex;
    }

    .improvement-item-icon {
        gap: 0.75rem;
    }

    .improvement-icon-circle {
        width: 100px;
        height: 100px;
        padding: 15px;
    }

    .improvement-icon-circle svg.improvement-icon-img {
        max-width: 70px;
        max-height: 70px;
    }

    .improvement-icon-text {
        font-size: 14px;
        line-height: 1.4;
    }

    .worries {
        padding: 4rem 1.5rem;
        min-height: auto;
    }

    .worries-bg-image {
        object-position: 10% center;
    }

    .worries-content {
        grid-template-columns: 1fr;
        gap: 2rem;
        justify-items: flex-start;
    }

    .worries-text {
        max-width: 100%;
        text-align: left;
    }

    .worries-list {
        padding-left: 0;
        margin-left: 0;
    }

    .worry-item {
        justify-content: flex-start;
    }

    .worry-item {
        gap: 0.75rem;
    }

    .worry-text {
        font-size: 1.1rem;
    }

    .worries-conclusion {
        margin-top: 3rem;
    }

    .worries-conclusion p {
        font-size: 1.2rem;
        line-height: 1.6;
    }

    .uniqueness {
        min-height: auto;
        padding: 3rem 1.5rem;
    }

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

    .uniqueness .section-container {
        padding: 2rem 1.5rem;
    }

    .uniqueness-title {
        font-size: 1.5rem;
        font-weight: 700;
        margin-bottom: 0.75rem;
    }

    .uniqueness-title-underline {
        margin-bottom: 2rem;
    }

    .uniqueness-main-text {
        font-size: 1.6rem;
        font-weight: 700;
        line-height: 1.5;
        margin-bottom: 1.5rem;
    }

    .uniqueness-sub-text {
        font-size: 1.4rem;
        font-weight: 700;
        line-height: 1.5;
    }

    .process {
        padding: 4rem 1.5rem;
    }

    .process-title {
        font-size: 1.8rem;
    }

    .process-subtitle {
        font-size: 1.2rem;
    }

    .process-steps {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
        margin-top: 2rem;
    }

    .process-arrow {
        transform: rotate(90deg);
        font-size: 1.5rem;
        margin-left: 1.7rem;
    }

    .process-step {
        max-width: 100%;
        flex-direction: row;
        align-items: center;
        justify-content: flex-start;
        gap: 1.5rem;
    }

    .process-step-circle {
        width: 100px;
        height: 100px;
        flex-shrink: 0;
    }

    .process-step-icon {
        width: 2.5rem;
        height: 2.5rem;
    }

    .process-step-text {
        font-size: 1rem;
        text-align: left;
    }

    .compatible-apps {
        padding: 4rem 1.5rem;
        min-height: auto;
    }

    .compatible-apps-bg-desktop {
        display: none !important;
    }

    .compatible-apps-bg-mobile {
        display: block !important;
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
    }

    .compatible-apps-content {
        padding: 2rem 1.5rem;
    }

    .compatible-apps-title {
        font-size: 1.8rem;
    }

    .compatible-apps-subtitle {
        font-size: 1.2rem;
    }

    .compatible-apps-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .compatible-app-card {
        padding: 2rem 1.5rem;
    }

    .app-card-title {
        font-size: 1.4rem;
    }

    .app-card-subtitle {
        font-size: 0.9rem;
    }

    .contact-form-section {
        padding: 0px 20px 80px;
    }

    .contact-page-header {
        margin-bottom: 40px;
    }

    .contact-page-title {
        font-size: 1.8rem;
    }

    .contact-page-subtitle {
        font-size: 1.2rem;
    }

    .contact-form-content {
        padding: 40px 20px;
    }

    .contact-form-intro {
        font-size: 14px;
    }

    .form-field,
    .form-field-last {
        flex-direction: column;
        gap: 12px;
        padding: 10px 0;
        border-bottom: none;
    }

    .form-label {
        min-width: auto;
        display: flex;
        align-items: center;
        gap: 8px;
        margin-bottom: 0;
        position: relative;
    }

    .form-input-wrapper,
    .form-textarea-wrapper {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 8px;
        position: relative;
    }

    .form-badge {
        margin-left: 0;
        margin-top: 0;
        position: absolute;
        left: auto;
        right: 0;
        top: 0;
    }

    .form-input-wrapper .form-badge,
    .form-textarea-wrapper .form-badge {
        position: absolute;
        right: 0;
        top: -30px;
    }

    .form-input,
    .form-textarea {
        font-size: 16px;
        padding: 12px;
        width: 100%;
        background-color: #ffffff;
        border: 1px solid #e0e0e0;
    }

    .form-submit-btn {
        width: 100%;
        font-size: 16px;
        padding: 14px 24px;
        margin-left: 0;
        background: linear-gradient(90deg, #2196F3 0%, #84cc16 100%);
        border-radius: 50px;
    }

    .checkbox-field {
        margin-left: 0;
        border-bottom: none;
        padding-top: 20px;
    }

    .privacy-modal.active {
        padding: 1rem;
    }

    .privacy-modal-content {
        width: 100%;
        max-height: 95vh;
    }

    .privacy-modal-header {
        padding: 1.5rem 1.5rem 1rem;
    }

    .privacy-modal-header h2 {
        font-size: 1.5rem;
    }

    .privacy-modal-body {
        padding: 1.5rem;
        font-size: 0.95rem;
    }

    .privacy-section h3 {
        font-size: 1.1rem;
    }

    .privacy-modal-footer {
        padding: 1rem 1.5rem 1.5rem;
    }

    .privacy-link-btn {
        display: block;
        margin-left: 0;
        margin-top: 0.5rem;
        font-size: 0.85rem;
    }

    .privacy-modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .privacy-modal-header {
        padding: 1.5rem 1.5rem 1rem;
    }

    .privacy-modal-header h2 {
        font-size: 1.5rem;
    }

    .privacy-modal-body {
        padding: 1.5rem;
    }

    .privacy-section h3 {
        font-size: 1.1rem;
    }

    .privacy-modal-footer {
        padding: 1rem 1.5rem 1.5rem;
    }

    .privacy-link-btn {
        display: block;
        margin-left: 0;
        margin-top: 0.5rem;
    }
}

@media (max-width: 480px) {
    body {
        font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
    }

    .header {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(10px);
        z-index: 1000;
        padding: 0 0;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    }

    .header-container {
        padding: 0 0 0 1rem;
    }

    .header-container .logo {
        padding-left: 0;
    }

    .logo-image {
        height: 24px;
    }

    .logo-text {
        height: 16px;
    }

    .hero-content {
        padding: 2.5rem 1.2rem;
        text-align: left;
    }

    .hero-title {
        font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
        font-size: 44px;
        font-weight: 900;
        line-height: 1.3;
        margin-bottom: 1.8rem;
        text-align: left;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        text-rendering: optimizeLegibility;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5), 0 0 2px rgba(0, 0, 0, 0.3);
    }

    .hero-title-desktop {
        display: none;
    }

    .hero-title-mobile {
        display: block;
        text-shadow: 0 2px 15px rgba(0, 0, 0, 0.9), 0 0 8px rgba(0, 0, 0, 0.7), 0 1px 3px rgba(0, 0, 0, 0.8);
    }

    .hero-title-mobile .hero-title-support {
        font-size: 25px;
    }

    .hero-subtitle {
        font-family: 'Noto Sans CJK JP', 'Noto Sans JP', sans-serif;
        font-size: 1.1rem;
        font-weight: 600;
        margin-bottom: 2rem;
        text-align: left;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        text-rendering: optimizeLegibility;
        text-shadow: 0 2px 8px rgba(0, 0, 0, 0.5), 0 0 2px rgba(0, 0, 0, 0.3);
    }

    .hero-cta {
        width: 100%;
        padding: 1.1rem 2rem;
        font-size: 1rem;
        font-weight: 700;
        align-self: stretch;
        justify-content: center;
    }

    .hero-bg-image {
        object-position: 58% center;
    }

    .dx-intro {
        padding: 2rem 0.75rem;
    }

    .dx-intro-text {
        left: 0;
    }

    .dx-intro-text .section-title {
        font-size: 1.5rem;
    }

    .dx-definition {
        font-size: 0.95rem;
    }

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

    .section-subtitle {
        font-size: 1.1rem;
    }

    .contact-page-subtitle {
        font-size: 1.1rem;
    }

    .worry-text {
        font-size: 1rem;
    }

    .worries-conclusion p {
        font-size: 1.1rem;
    }

    .uniqueness-title {
        font-size: 1.3rem;
    }

    .uniqueness-main-text {
        font-size: 1.4rem;
        font-weight: 700;
    }

    .uniqueness-sub-text {
        font-size: 1.2rem;
        font-weight: 700;
    }

    .process-step-circle {
        width: 80px;
        height: 80px;
    }

    .process-step-icon {
        width: 2rem;
        height: 2rem;
    }

    .process-step-text {
        font-size: 0.9rem;
    }

    .compatible-app-card {
        padding: 1.5rem 1rem;
    }

    .app-card-title {
        font-size: 1.2rem;
    }

    .app-card-subtitle {
        font-size: 0.85rem;
    }

    .contact-form-section {
        padding: 140px 20px 80px;
    }

    .contact-page-title {
        font-size: 1.8rem;
    }

    .contact-page-subtitle {
        font-size: 1.2rem;
    }

    .contact-form-content {
        padding: 40px 20px;
    }

    .form-input,
    .form-textarea {
        font-size: 16px;
        padding: 12px;
    }

    .form-submit-btn {
        font-size: 16px;
        padding: 14px 24px;
    }

    .privacy-modal-content {
        width: 95%;
        max-height: 95vh;
    }

    .privacy-modal-header {
        padding: 1.5rem 1.5rem 1rem;
    }

    .privacy-modal-header h2 {
        font-size: 1.5rem;
    }

    .privacy-modal-body {
        padding: 1.5rem;
    }

    .privacy-section h3 {
        font-size: 1.1rem;
    }

    .privacy-modal-footer {
        padding: 1rem 1.5rem 1.5rem;
    }

    .privacy-link-btn {
        display: block;
        margin-left: 0;
        margin-top: 0.5rem;
    }

    .improvement-icon {
        width: 100px;
        height: 100px;
    }

    .improvement-icon img {
        width: 50px;
        height: 50px;
    }
}