:root {
    --primary-color: #1f5532;
    --secondary-color: #3d7e5b;
    --accent-color: #8fd19e;
    --accent-strong: #4caf65;
    --text-color: #1d2d23;
    --muted-color: #5b7263;
    --background-light: #f2f6f1;
    --background-medium: #e4ede3;
    --surface-color: #ffffff;
    --surface-tint: rgba(255, 255, 255, 0.72);
    --shadow-soft: 0 25px 60px rgba(31, 85, 50, 0.14);
    --shadow-hover: 0 30px 70px rgba(31, 85, 50, 0.22);
    --radius-lg: 32px;
    --radius-md: 20px;
    --radius-sm: 12px;
    --font-body: 'Noto Sans JP', 'Hiragino Sans', 'ヒラギノ角ゴシック', 'Yu Gothic', 'メイリオ', sans-serif;
    --font-display: 'Shippori Mincho', 'Yu Mincho', 'Hiragino Mincho ProN', serif;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-body);
    color: var(--text-color);
    line-height: 1.7;
    background: linear-gradient(180deg, #f6faf5 0%, #f1f7f1 48%, #eaf2ec 100%);
    position: relative;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image: radial-gradient(circle at 20% 20%, rgba(143, 209, 158, 0.2), transparent 50%),
                      radial-gradient(circle at 85% 15%, rgba(66, 120, 87, 0.12), transparent 55%),
                      radial-gradient(circle at 50% 100%, rgba(192, 222, 199, 0.45), transparent 60%);
    z-index: -2;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 28px;
    margin-top: 96px;
}

a {
    color: inherit;
}

a:hover {
    color: inherit;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 48px;
    background: var(--surface-tint);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(31, 85, 50, 0.08);
    box-shadow: 0 12px 30px rgba(31, 85, 50, 0.12);
    z-index: 1000;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

header.transparent {
    background: rgba(242, 246, 241, 0.88);
    box-shadow: 0 10px 25px rgba(31, 85, 50, 0.08);
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo a {
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.logo a:hover {
    transform: translateY(-2px);
}

header .logo img {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    box-shadow: 0 10px 20px rgba(31, 85, 50, 0.15);
}

header .logo h1 {
    margin: 0;
    font-size: 24px;
    font-family: var(--font-display);
    letter-spacing: 0.08em;
    color: var(--primary-color);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 22px;
    cursor: pointer;
}

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

nav {
    display: flex;
    gap: 32px;
    align-items: center;
}

nav a {
    position: relative;
    text-decoration: none;
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.05em;
    color: var(--muted-color);
    padding-bottom: 6px;
    transition: color 0.3s ease;
}

nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 3px;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(79, 175, 101, 0.2), rgba(143, 209, 158, 0.8));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

nav a:hover {
    color: var(--primary-color);
}

nav a:hover::after,
nav a:focus-visible::after {
    transform: scaleX(1);
}

section {
    padding: 110px 0;
    position: relative;
    overflow: hidden;
}

.section-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 28px;
}

.section-title {
    font-size: 40px;
    margin: 0 0 32px;
    text-align: center;
    font-family: var(--font-display);
    letter-spacing: 0.1em;
    color: var(--primary-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 72px;
    height: 3px;
    margin: 16px auto 0;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(79, 175, 101, 0.2), rgba(79, 175, 101, 0.9));
}

.section-lead {
    max-width: 720px;
    margin: 0 auto 48px;
    font-size: 18px;
    text-align: center;
    color: var(--muted-color);
}

.section-alt {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.85) 0%, rgba(228, 237, 227, 0.85) 100%);
}

.section-alt::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 10% 0%, rgba(143, 209, 158, 0.15), transparent 45%),
                      radial-gradient(circle at 90% 15%, rgba(79, 175, 101, 0.12), transparent 55%);
    opacity: 0.7;
    z-index: -1;
}

.hero {
    padding: 160px 0 140px;
    color: #ffffff;
    background: linear-gradient(140deg, rgba(31, 85, 50, 0.95) 0%, rgba(61, 126, 91, 0.92) 55%, rgba(143, 209, 158, 0.9) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.18), transparent 55%),
                      radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.15), transparent 60%);
    z-index: 0;
}

.hero .section-inner {
    position: relative;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 56px;
    align-items: center;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.18);
    font-size: 13px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.hero-text h2 {
    margin: 0 0 24px;
    font-size: clamp(32px, 5vw, 52px);
    font-family: var(--font-display);
    letter-spacing: 0.08em;
    line-height: 1.3;
}

.hero-text p {
    margin: 0 0 28px;
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    max-width: 540px;
}

.hero-highlight {
    display: inline-flex;
    gap: 12px;
    flex-wrap: wrap;
    color: rgba(255, 255, 255, 0.9);
}

.hero-highlight span {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.14);
    font-size: 14px;
}

.hero-visual {
    position: relative;
    justify-self: center;
}

.hero-visual::before {
    content: '';
    position: absolute;
    inset: -18px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.4), transparent 70%);
    z-index: 0;
}

.hero-visual img {
    position: relative;
    width: min(360px, 80vw);
    height: auto;
    border-radius: 50%;
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.25);
    border: 8px solid rgba(255, 255, 255, 0.4);
    z-index: 1;
}

.service-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(260px, 1fr));
    gap: 28px;
    list-style: none;
    padding: 0;
    margin: 0;
}

.service-card {
    background: var(--surface-color);
    border-radius: var(--radius-md);
    padding: 28px;
    box-shadow: var(--shadow-soft);
    transition: transform 0.35s ease, box-shadow 0.35s ease;
    min-height: 180px;
    position: relative;
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.service-card h3 {
    margin: 0 0 12px;
    font-size: 20px;
    color: var(--primary-color);
    font-family: var(--font-display);
}

.service-card p {
    margin: 0;
    color: var(--muted-color);
    font-size: 15px;
}

.service-card--feature {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: minmax(0, 1fr) 220px;
    align-items: center;
    gap: 32px;
    padding: 32px 40px;
}

.service-card__content {
    display: grid;
    gap: 18px;
}

.service-card__visual {
    position: relative;
    justify-self: end;
}

.service-card__visual img {
    width: 200px;
    max-width: 100%;
    height: auto;
    border-radius: 50%;
    border: 6px solid rgba(143, 209, 158, 0.32);
    box-shadow: 0 25px 55px rgba(31, 85, 50, 0.18);
}

.service-card__cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(79, 175, 101, 0.18), rgba(143, 209, 158, 0.65));
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
    box-shadow: 0 10px 25px rgba(31, 85, 50, 0.16);
    max-width: fit-content;
}

.service-card__cta::after {
    content: '→';
    font-size: 16px;
}

.service-card__cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 32px rgba(31, 85, 50, 0.2);
}

.contact-section {
    background: var(--background-light);
}

.contact-card {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 40px 36px;
    box-shadow: var(--shadow-soft);
    display: grid;
    gap: 28px;
    justify-items: center;
}

.contact-card p {
    margin: 0;
    font-size: 17px;
    color: var(--muted-color);
}

.contact-card iframe {
    width: 100%;
    max-width: 720px;
    border: none;
    border-radius: var(--radius-md);
    box-shadow: inset 0 0 0 1px rgba(31, 85, 50, 0.08);
    min-height: 720px;
}

footer {
    background: linear-gradient(180deg, rgba(31, 85, 50, 0.92), rgba(31, 85, 50, 0.85));
    color: rgba(255, 255, 255, 0.88);
    padding: 48px 24px;
    margin-top: 60px;
}

.footer-container {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.footer-container p {
    margin: 0;
    font-size: 13px;
    letter-spacing: 0.14em;
}

@media screen and (max-width: 1024px) {
    header {
        padding: 12px 32px;
    }

    main {
        margin-top: 92px;
    }

    section {
        padding: 90px 0;
    }

    .service-card--feature {
        grid-template-columns: minmax(0, 1fr) 200px;
        padding: 30px 32px;
    }
}

@media screen and (max-width: 820px) {
    nav {
        display: none;
        position: absolute;
        top: 68px;
        left: 16px;
        right: 16px;
        flex-direction: column;
        gap: 16px;
        background: rgba(255, 255, 255, 0.98);
        border-radius: var(--radius-md);
        padding: 24px 20px;
        box-shadow: 0 18px 40px rgba(31, 85, 50, 0.18);
    }

    nav.active {
        display: flex;
    }

    nav a {
        color: var(--primary-color);
        font-size: 16px;
    }

    .menu-toggle {
        display: flex;
    }

    .service-list {
        grid-template-columns: 1fr;
    }

    .service-card--feature {
        grid-column: auto;
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 28px 26px;
        justify-items: center;
        text-align: center;
    }

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

    .service-card__visual {
        justify-self: center;
    }
}

@media screen and (max-width: 640px) {
    header {
        padding: 10px 24px;
    }

    header .logo img {
        width: 40px;
        height: 40px;
    }

    header .logo h1 {
        font-size: 20px;
    }

    .section-title {
        font-size: 34px;
    }

    .section-lead {
        font-size: 16px;
    }

    .hero {
        padding: 140px 0 120px;
    }

    .hero-text p {
        font-size: 16px;
    }

    .contact-card {
        padding: 32px 24px;
    }

    .contact-card iframe {
        min-height: 640px;
    }

    .service-card__visual img {
        width: 180px;
    }
}

@media screen and (max-width: 460px) {
    main {
        padding: 0 20px;
    }

    .hero-badge {
        font-size: 11px;
        letter-spacing: 0.12em;
    }

    .hero-text h2 {
        font-size: 32px;
    }

    .service-card {
        padding: 24px;
    }

    .contact-card iframe {
        min-height: 580px;
    }

    .service-card__visual img {
        width: 160px;
    }
}