/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 62.5%;
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', sans-serif;
    font-size: 1.6rem;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 600;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1.5rem;
}

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

ul, ol {
    list-style: none;
}

/* Button Components */
.btn {
    display: inline-block;
    padding: 1.2rem 2.4rem;
    border-radius: 0.8rem;
    font-weight: 600;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 1.6rem;
    line-height: 1.5;
}

.btn--primary {
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: #fff;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(40, 167, 69, 0.6);
}

.btn--secondary {
    background: transparent;
    color: #28a745;
    border: 2px solid #28a745;
}

.btn--secondary:hover {
    background: #28a745;
    color: #fff;
    transform: translateY(-2px);
}

.btn--large {
    padding: 1.6rem 3.2rem;
    font-size: 1.8rem;
}

.btn--full {
    width: 100%;
    justify-content: center;
}

/* Container */
.container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.header__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 7rem;
}

.header__title {
    font-size: 2.4rem;
    font-weight: 700;
    color: #28a745;
    margin: 0;
}

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

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

.header__nav-link {
    font-weight: 500;
    color: #333;
    transition: color 0.3s ease;
    position: relative;
}

.header__nav-link:hover {
    color: #28a745;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 0;
    height: 2px;
    background: #28a745;
    transition: width 0.3s ease;
}

.header__nav-link:hover::after {
    width: 100%;
}

.header__menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    gap: 0.4rem;
}

.header__menu-line {
    width: 2.5rem;
    height: 0.3rem;
    background: #333;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    padding: 12rem 0 8rem;
    background: linear-gradient(135deg, #e8f5e8 0%, #c8e6c8 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.hero__title {
    font-size: 4.8rem;
    font-weight: 700;
    margin-bottom: 2rem;
    line-height: 1.1;
}

.hero__title--accent {
    color: #28a745;
    position: relative;
}

.hero__title--accent::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 100%;
    height: 0.4rem;
    background: linear-gradient(135deg, #28a745, #20c997);
    border-radius: 0.2rem;
}

.hero__description {
    font-size: 1.8rem;
    color: #666;
    margin-bottom: 3rem;
    line-height: 1.7;
}

.hero__price-highlight {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 4rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 1.2rem;
    border: 2px solid #28a745;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.1);
}

.hero__price {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero__price-label {
    font-size: 1.4rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.hero__price-value {
    font-size: 2.4rem;
    font-weight: 700;
}

.hero__price-value--crossed {
    color: #dc3545;
    text-decoration: line-through;
    opacity: 0.7;
}

.hero__price-value--main {
    color: #28a745;
    font-size: 3rem;
}

.hero__price-arrow {
    font-size: 2.4rem;
    color: #28a745;
    font-weight: bold;
}

.hero__buttons {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.hero__image {
    position: relative;
    border-radius: 2rem;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.hero__img {
    width: 100%;
    height: auto;
    display: block;
}

/* Strengths Section */
.strengths {
    padding: 10rem 0;
    background: #fff;
}

.strengths__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
}

.strengths__title {
    font-size: 4rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #333;
}

.strengths__subtitle {
    font-size: 1.8rem;
    text-align: center;
    color: #666;
    margin-bottom: 6rem;
}

.strengths__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(35rem, 1fr));
    gap: 3rem;
}

.strengths__card {
    background: #fff;
    padding: 4rem 3rem;
    border-radius: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.strengths__card:hover {
    transform: translateY(-1rem);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.strengths__icon {
    font-size: 5rem;
    margin-bottom: 2rem;
    display: block;
}

.strengths__card-title {
    font-size: 2.4rem;
    margin-bottom: 2rem;
    color: #333;
    line-height: 1.3;
}

.strengths__card-description {
    font-size: 1.6rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 2.5rem;
}

.strengths__card-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.strengths__card-feature {
    padding: 1rem 1.6rem;
    background: #f8f9fa;
    border-radius: 2rem;
    font-size: 1.4rem;
    color: #555;
    border: 1px solid #e9ecef;
}

/* Examples Section */
.examples {
    padding: 10rem 0;
    background: #f8f9fa;
}

.examples__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
}

.examples__title {
    font-size: 4rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #333;
}

.examples__subtitle {
    font-size: 1.8rem;
    text-align: center;
    color: #666;
    margin-bottom: 6rem;
}

.examples__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(40rem, 1fr));
    gap: 4rem;
    margin-bottom: 6rem;
}

.examples__card {
    background: #fff;
    border-radius: 2rem;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.examples__card:hover {
    transform: translateY(-1rem);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.examples__card-header {
    padding: 3rem 3rem 2rem;
    text-align: center;
}

.examples__card-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    display: block;
}

.examples__card-title {
    font-size: 2.2rem;
    margin-bottom: 2rem;
    color: #333;
}

.examples__card-price {
    text-align: center;
}

.examples__card-price-value {
    display: block;
    font-size: 3.6rem;
    font-weight: 700;
    color: #28a745;
    margin-bottom: 0.5rem;
}

.examples__card-price-note {
    font-size: 1.3rem;
    color: #666;
    font-style: italic;
}

.examples__card-image {
    height: 20rem;
    overflow: hidden;
}

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

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

.examples__card-content {
    padding: 3rem;
}

.examples__card-subtitle {
    font-size: 1.6rem;
    color: #333;
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.examples__card-features {
    margin-bottom: 2rem;
}

.examples__card-feature {
    font-size: 1.4rem;
    color: #555;
    padding: 0.5rem 0;
    position: relative;
    padding-left: 2rem;
    line-height: 1.6;
}

.examples__card-feature::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

.examples__card-tech,
.examples__card-period {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
    font-size: 1.4rem;
}

.examples__card-tech-label,
.examples__card-period-label {
    font-weight: 600;
    color: #333;
    margin-right: 0.8rem;
    min-width: 6rem;
}

.examples__card-tech-value,
.examples__card-period-value {
    color: #666;
}

.examples__notice {
    display: flex;
    align-items: flex-start;
    gap: 2rem;
    padding: 3rem;
    background: linear-gradient(135deg, #28a745, #20c997);
    color: #fff;
    border-radius: 2rem;
    box-shadow: 0 10px 30px rgba(40, 167, 69, 0.3);
}

.examples__notice-icon {
    font-size: 3rem;
    flex-shrink: 0;
}

.examples__notice-title {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #fff;
}

.examples__notice-text {
    font-size: 1.6rem;
    line-height: 1.7;
    margin: 0;
    opacity: 0.9;
}

/* Services Section */
.services {
    padding: 10rem 0;
    background: #fff;
}

.services__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
}

.services__title {
    font-size: 4rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #333;
}

.services__subtitle {
    font-size: 1.8rem;
    text-align: center;
    color: #666;
    margin-bottom: 6rem;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(35rem, 1fr));
    gap: 3rem;
}

.services__card {
    background: #fff;
    padding: 3rem;
    border-radius: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.services__card:hover {
    transform: translateY(-1rem);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}

.services__card-icon {
    font-size: 4rem;
    margin-bottom: 2rem;
    display: block;
}

.services__card-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.services__card-description {
    font-size: 1.5rem;
    color: #666;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.services__card-features {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.services__card-feature {
    font-size: 1.4rem;
    color: #555;
    padding: 0.5rem 0;
    border-bottom: 1px solid #f0f0f0;
}

.services__card-feature:last-child {
    border-bottom: none;
}

/* CTA Section */
.cta {
    padding: 10rem 0;
    background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
    color: #fff;
}

.cta__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6rem;
    align-items: center;
}

.cta__title {
    font-size: 4rem;
    margin-bottom: 2rem;
    line-height: 1.2;
}

.cta__description {
    font-size: 1.8rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    line-height: 1.7;
}

.cta__features {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 4rem;
}

.cta__feature {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.cta__feature-icon {
    width: 2rem;
    height: 2rem;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    flex-shrink: 0;
}

.cta__feature-text {
    font-size: 1.6rem;
    font-weight: 500;
}

.cta__image {
    border-radius: 2rem;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.cta__img {
    width: 100%;
    height: auto;
    display: block;
}

/* Contact Section */
.contact {
    padding: 10rem 0;
    background: #fff;
}

.contact__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
}

.contact__title {
    font-size: 4rem;
    text-align: center;
    margin-bottom: 1rem;
    color: #333;
}

.contact__subtitle {
    font-size: 1.8rem;
    text-align: center;
    color: #666;
    margin-bottom: 6rem;
    max-width: 60rem;
    margin-left: auto;
    margin-right: auto;
}

.contact__content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 6rem;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.contact__info-item {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
}

.contact__info-icon {
    font-size: 2.4rem;
    width: 5rem;
    height: 5rem;
    background: linear-gradient(135deg, #28a745, #20c997);
    color: #fff;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact__info-title {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.contact__info-text {
    font-size: 1.6rem;
    color: #666;
    margin: 0;
}

.contact__form {
    background: #f8f9fa;
    padding: 4rem;
    border-radius: 2rem;
    border: 1px solid #e9ecef;
}

.contact__form-group {
    margin-bottom: 2.5rem;
}

.contact__form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.contact__form-label {
    display: block;
    font-size: 1.5rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 0.8rem;
}

.contact__form-required {
    color: #e74c3c;
}

.contact__form-input,
.contact__form-select,
.contact__form-textarea {
    width: 100%;
    padding: 1.2rem 1.6rem;
    border: 2px solid #e9ecef;
    border-radius: 0.8rem;
    font-size: 1.5rem;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background: #fff;
}

.contact__form-input:focus,
.contact__form-select:focus,
.contact__form-textarea:focus {
    outline: none;
    border-color: #28a745;
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.contact__form-textarea {
    resize: vertical;
    min-height: 12rem;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: #ecf0f1;
    padding: 6rem 0 3rem;
}

.footer__container {
    max-width: 120rem;
    margin: 0 auto;
    padding: 0 2rem;
}

.footer__content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer__company-name {
    font-size: 2.4rem;
    color: #28a745;
    margin-bottom: 2rem;
}

.footer__company-description {
    font-size: 1.6rem;
    line-height: 1.7;
    color: #bdc3c7;
    margin: 0;
}

.footer__contact-title {
    font-size: 1.8rem;
    margin-bottom: 2rem;
    color: #ecf0f1;
}

.footer__contact-info {
    font-size: 1.5rem;
    color: #bdc3c7;
    margin-bottom: 1rem;
}

.footer__bottom {
    text-align: center;
    padding-top: 3rem;
    border-top: 1px solid #34495e;
}

.footer__copyright {
    font-size: 1.4rem;
    color: #95a5a6;
    margin: 0;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(3rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

/* Form Message Styles */
.form-message {
    margin-bottom: 2rem;
    padding: 1.5rem;
    border-radius: 0.8rem;
    font-size: 1.5rem;
    font-weight: 500;
}

.form-error {
    color: #e74c3c;
    font-size: 1.3rem;
    margin-top: 0.5rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 55%;
    }

    .header__nav {
        display: none;
    }

    .header__menu-toggle {
        display: flex;
    }

    .hero__container {
        grid-template-columns: 1fr;
        gap: 4rem;
        text-align: center;
    }

    .hero__title {
        font-size: 3.6rem;
    }

    .hero__price-highlight {
        flex-direction: column;
        gap: 1rem;
    }

    .hero__price-arrow {
        transform: rotate(90deg);
    }

    .hero__buttons {
        justify-content: center;
    }

    .strengths__grid {
        grid-template-columns: 1fr;
    }

    .examples__grid {
        grid-template-columns: 1fr;
    }

    .services__grid {
        grid-template-columns: 1fr;
    }

    .cta__container {
        grid-template-columns: 1fr;
        gap: 4rem;
        text-align: center;
    }

    .contact__content {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .contact__form {
        padding: 3rem 2rem;
    }

    .contact__form-row {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer__content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

    .examples__notice {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 3rem;
    }

    .strengths__title,
    .examples__title,
    .services__title,
    .cta__title,
    .contact__title {
        font-size: 3rem;
    }

    .btn {
        padding: 1rem 2rem;
        font-size: 1.5rem;
    }

    .examples__card-price-value {
        font-size: 3rem;
    }

    .contact__form {
        padding: 2rem 1.5rem;
    }

    .strengths__card,
    .services__card {
        padding: 2.5rem 2rem;
    }
}