/* ===== グローバル & 基本設定 ===== */
:root {
    --indigo-600: #4f46e5;
    --indigo-700: #4338ca;
    --indigo-200: #c7d2fe;
    --gray-50: #fefefe;
    --gray-600: #4b5563;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --green-500: #22c55e;
    --main-green: #50b1a6;
    --hover-green: #8fcdc6;
    --teal-500: #14b8a6;
    --amber-500: #f59e0b;
}

html {
    height: 100%;
}

body {
    background-color: var(--gray-50);
    color: var(--gray-800);
    margin: 0;
    font-size: 16px;
    display: flex;
    flex-direction: column;
    min-height: 100vh; 
}

main {
    flex-grow: 1;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    box-sizing: border-box;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

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

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

/* ===== ヘッダー ===== */
#header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 90;
    transition: all 0.3s ease;
}

#header.header-scrolled {
    backdrop-filter: saturate(180%) blur(5px);
    -webkit-backdrop-filter: saturate(180%) blur(5px);
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    padding-bottom: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 2;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-900);
}

.logo-image {
    height: 7.5%;
    width: 7.5%;
    margin-right: 0.75rem;
}
.main-nav {
    display: none;
}

.main-nav a {
    color: var(--gray-600);
}

.main-nav a:hover {
    color: var(--main-green);
}

.mobile-menu-trigger {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

.mobile-menu {
    display: none;
    background-color: var(--white);
    padding: 0 1.5rem 1rem;
}

.mobile-menu.is-open {
    display: block;
}

.mobile-menu a {
    display: block;
    padding: 0.5rem 0;
    color: var(--gray-600);
}

.mobile-menu a.btn {
    margin-top: 1rem;
    text-align: center;
    color: var(--white);
}

/* ===== ボタン ===== */
.btn {
    display: inline-block;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--main-green);
    color: var(--white);
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.btn-primary:hover {
    background-color: var(--hover-green);
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

.btn-secondary {
    background-color: var(--white);
    color: var(--gray-800);
    border: 1px solid #d1d5db;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

.btn-secondary:hover {
    background-color: #f3f4f6;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

.btn-outline {
    background-color: var(--white);
    color: var(--main-green);
    border: 2px solid var(--main-green);
}

.btn-outline:hover {
    background-color: #eef2ff;
}

.btn-lg {
    padding: 0.75rem 2rem;
}

.btn-cta {
    background-color: var(--white);
    color: var(--main-green);
    font-weight: 700;
    padding: 1rem 2.5rem;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}
.btn-cta:hover {
    background-color: #f3f4f6;
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

.header-btn {
    display: none;
}


/* ===== セクション ===== */
.section {
    padding: 5rem 0;
}
.section-bg-white {
    background-color: var(--white);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--gray-600);
    margin-top: 0.5rem;
}

/* ===== ヒーローセクション ===== */
.hero-section {
    padding-top: 8rem;
    padding-bottom: 5rem;
    background-color: var(--white);
    display: flex;
    align-items: center;
    flex-grow: 1;
}

.hero-title {
    font-size: 2.5rem;
    line-height: 1.2;
    font-weight: 700;
    color: var(--gray-900);
    margin: 0 0 1rem;
}

.hero-subtitle {
    color: var(--gray-600);
    font-size: 1.125rem;
    max-width: 48rem;
    margin: 0 auto 2rem;
}

.hero-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.hero-buttons > .btn:hover {
    transform: translateY(-4px);
}

.hero-image-wrapper {
    max-width: 56rem;
    margin: 0 auto;
    background-color: var(--white);
    border-radius: 0.75rem;
    box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    overflow: hidden;
}

/* ===== 特徴セクション ===== */
.features-grid {
    display: grid;
    gap: 2.5rem;
}

.feature-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    transition: box-shadow 0.3s ease;
}

.feature-card:hover {
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.feature-card-icon {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.icon-indigo { color: var(--main-green); }
.icon-teal { color: var(--teal-500); }
.icon-amber { color: var(--amber-500); }

.feature-card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
}

.feature-card p {
    color: var(--gray-600);
    margin: 0;
}

/* ===== 料金セクション ===== */
.pricing-grid {
    display: grid;
    gap: 2rem;
    max-width: 56rem;
    margin: 0 auto;
}

.pricing-card {
    border: 1px solid #e5e7eb;
    border-radius: 0.75rem;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}
.pricing-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 0.5rem;
}
.pricing-card-subtitle {
    color: #6b7280;
    margin: 0 0 1.5rem;
}
.pricing-card-price {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0 0 1rem;
}
.pricing-card-price span {
    font-size: 1.125rem;
    font-weight: 500;
    color: #6b7280;
}
.pricing-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
    flex-grow: 1;
}
.pricing-card ul li {
    display: flex;
    align-items: center;
    color: var(--gray-600);
    margin-bottom: 0.75rem;
}
.pricing-card ul i {
    color: var(--green-500);
    margin-right: 0.75rem;
}
.pricing-card .btn {
    width: 100%;
    text-align: center;
}
.pricing-card.recommended {
    border: 2px solid var(--main-green);
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}
.recommended-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: var(--main-green);
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    transform: rotate(45deg) translate(28%, -25%);
    transform-origin: center;
}
.text-indigo {
    color: var(--main-green);
}

/* ===== お客様の声セクション ===== */
.testimonials-grid {
    display: grid;
    gap: 2rem;
}
.testimonial-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}
.testimonial-card p {
    color: var(--gray-600);
    margin: 0 0 1.5rem;
}
.testimonial-author {
    display: flex;
    align-items: center;
}
.testimonial-author img {
    width: 3rem;
    height: 3rem;
    border-radius: 50%;
    margin-right: 1rem;
}
.author-name {
    font-weight: 700;
    margin: 0;
}
.author-title {
    font-size: 0.875rem;
    color: #6b7280;
    margin: 0;
}

/* ===== FAQセクション ===== */
.faq-container {
    max-width: 48rem;
}
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
.faq-item {
    background-color: #f9fafb;
    border-radius: 0.5rem;
}
.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    padding: 1.5rem;
    font-weight: 600;
    font-size: 1rem;
    background: none;
    border: none;
    cursor: pointer;
}
.faq-question i {
    transition: transform 0.3s ease;
}
.faq-question i.is-open {
    transform: rotate(180deg);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease-in-out;
}
.faq-answer p {
    padding: 0 1.5rem 1.5rem;
    margin: 0;
    color: var(--gray-600);
}

/* ===== CTAセクション ===== */
.cta-section {
    background-color: var(--main-green);
    color: var(--white);
    padding: 5rem 0;
}
.cta-title {
    font-size: 2.25rem;
    font-weight: 700;
    margin: 0 0 1rem;
}
.cta-subtitle {
    color: var(--white);
    max-width: 42rem;
    margin: 0 auto 2rem;
}


/* ===== フッター ===== */
footer {
    background-color: var(--gray-800);
    color: var(--white);
}
footer .container {
    padding-top: 3rem;
    padding-bottom: 3rem;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 2rem;
}
.footer-logo {
    font-size: 1.25rem;
    font-weight: 700;
    margin: 0 0 1rem;
}
.footer-grid p,
.footer-grid ul li a {
    color: #9ca3af;
}
.footer-grid h4 {
    font-weight: 600;
    margin: 0 0 1rem;
}
.footer-grid ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}
.footer-grid ul a:hover {
    color: var(--white);
}
.social-links {
    display: flex;
    gap: 1rem;
    font-size: 1.5rem;
}
.social-links a:hover {
    color: var(--white);
}
.footer-bottom {
    margin-top: 3rem;
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #6b7280;
}

chat-widget {
    z-index: 99;
    width: auto; 
    height: auto;
}


/* ===== レスポンシブ対応 ===== */
@media (min-width: 768px) {
    .main-nav {
        display: flex;
        align-items: center;
        text-align: center;
        gap: 2rem;
        margin-right: 2rem;
    }
    .main-nav a {
        min-width: calc(16px * 3);
    }
    .header-btn {
        display: inline-block;
    }
    .mobile-menu-trigger {
        display: none;
    }
    .hero-title {
        font-size: 3.75rem;
    }
    .hero-subtitle {
        font-size: 1.25rem;
    }
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (min-width: 1024px) {
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .testimonials-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}