:root {
    --color-primary: #1f6feb;
    --color-primary-dark: #1a56c1;
    --color-accent: #ff9d3a;
    --color-bg: #f5f7fb;
    --color-surface: #ffffff;
    --color-text: #1d1f25;
    --color-text-muted: #4e5666;
    --shadow-soft: 0 20px 45px rgba(15, 23, 42, 0.12);
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 10px;
}

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

body {
    margin: 0;
    font-family: "Noto Sans JP", "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.7;
}

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

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

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

.container {
    width: min(1100px, 92vw);
    margin: 0 auto;
}

.section {
    padding: clamp(3rem, 5vw, 5.5rem) 0;
}

h1, h2, h3 {
    margin: 0 0 1rem;
    line-height: 1.3;
    font-weight: 700;
}

h1 {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
}

h2 {
    font-size: clamp(1.9rem, 3vw, 2.6rem);
}

h3 {
    font-size: clamp(1.3rem, 2.2vw, 1.7rem);
}

p {
    margin: 0 0 1.2rem;
    color: var(--color-text-muted);
}

ul {
    margin: 0;
    padding-left: 1.2rem;
    color: var(--color-text-muted);
}

.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(14px);
    box-shadow: 0 1px 0 rgba(15, 23, 42, 0.08);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    font-size: 1.2rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--color-text);
}

.logo-accent {
    color: var(--color-primary);
    font-weight: 600;
    font-size: 0.95rem;
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: 2rem;
    list-style: none;
}

.site-nav a {
    font-weight: 500;
    font-size: 0.98rem;
    transition: color 0.2s ease;
}

.site-nav a:hover,
.site-nav a:focus {
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.35rem;
    background: transparent;
    border: none;
    padding: 0.25rem;
    cursor: pointer;
}

.nav-toggle-bar {
    width: 26px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 999px;
}

.hero {
    padding-top: clamp(5rem, 6vw, 6.5rem);
}

.hero-content {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: center;
}

.hero-text {
    max-width: 560px;
}

.hero-kicker {
    font-weight: 600;
    color: var(--color-primary);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-size: 0.8rem;
    margin-bottom: 0.8rem;
}

.hero-description {
    font-size: 1.02rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    font-weight: 600;
    border: 1px solid transparent;
    font-size: 0.96rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.btn.primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-soft);
}

.btn.primary:hover,
.btn.primary:focus {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
}

.btn.ghost {
    border-color: rgba(31, 111, 235, 0.25);
    color: var(--color-primary);
    background: rgba(31, 111, 235, 0.08);
}

.btn.ghost:hover,
.btn.ghost:focus {
    border-color: rgba(31, 111, 235, 0.4);
    background: rgba(31, 111, 235, 0.12);
}

.hero-visual {
    position: relative;
    display: grid;
    gap: 1.5rem;
    align-content: center;
}

.hero-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
    max-width: 320px;
}

.hero-card-title {
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.hero-card-body {
    margin: 0;
    color: var(--color-text);
    font-weight: 500;
}

.hero-pill {
    justify-self: end;
    background: rgba(255, 157, 58, 0.12);
    color: var(--color-accent);
    font-weight: 600;
    border-radius: 999px;
    padding: 0.75rem 1.4rem;
    box-shadow: 0 10px 30px rgba(255, 157, 58, 0.2);
}

.grid-two {
    display: grid;
    gap: clamp(2rem, 4vw, 3rem);
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.feature-card,
.cta-card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-soft);
}

.feature-card p,
.cta-card p {
    color: var(--color-text);
}

.representative {
    font-weight: 600;
    margin-top: 1rem;
    color: var(--color-primary);
}

.services {
    background: #fff;
}

.service-grid {
    display: grid;
    gap: clamp(1.8rem, 4vw, 2.5rem);
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    margin-top: 2.5rem;
}

.service-card {
    background: linear-gradient(145deg, rgba(31, 111, 235, 0.08), rgba(255, 255, 255, 0.9));
    border-radius: var(--radius-md);
    padding: 2.2rem;
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
}

.service-index {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2.4rem;
    font-weight: 700;
    color: rgba(31, 111, 235, 0.12);
}

.service-card h3 {
    margin-bottom: 1rem;
    color: var(--color-text);
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: 1rem;
}

.company-info {
    display: grid;
    gap: 1.2rem;
    margin-top: 2.5rem;
}

.company-info div {
    display: grid;
    gap: 0.35rem;
}

.company-info dt {
    font-weight: 600;
    color: var(--color-text);
}

.company-info dd {
    margin: 0;
    color: var(--color-text-muted);
}

.company-info ul {
    margin-top: 0.4rem;
}

.info-highlight {
    margin-top: 2.5rem;
    border-radius: var(--radius-md);
    padding: 1.8rem 2rem;
    background: linear-gradient(135deg, rgba(31, 111, 235, 0.08), rgba(255, 157, 58, 0.1));
    color: var(--color-text);
    box-shadow: var(--shadow-soft);
}

.info-highlight p {
    margin: 0;
    font-weight: 500;
}

.contact {
    background: linear-gradient(135deg, rgba(31, 111, 235, 0.12), rgba(255, 157, 58, 0.12));
}

.site-footer {
    padding: 2rem 0 3rem;
    text-align: center;
    color: var(--color-text-muted);
}

.footer-logo {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.footer-copy {
    margin: 0;
    font-size: 0.92rem;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

@media (max-width: 900px) {
    .hero-content,
    .grid-two {
        grid-template-columns: 1fr;
    }

    .hero-visual {
        justify-items: center;
    }

    .hero-card {
        max-width: 100%;
    }

    .hero-pill {
        justify-self: center;
    }
}

@media (max-width: 720px) {
    .nav-toggle {
        display: flex;
    }

    .site-nav {
        position: absolute;
        top: 100%;
        right: 1rem;
        background: var(--color-surface);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-soft);
        padding: 1rem 1.5rem;
        transform: scale(0.95);
        transform-origin: top right;
        opacity: 0;
        pointer-events: none;
        transition: transform 0.2s ease, opacity 0.2s ease;
    }

    .site-nav.open {
        opacity: 1;
        pointer-events: auto;
        transform: scale(1);
    }

    .site-nav ul {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .header-inner {
        position: relative;
    }
}

@media (max-width: 540px) {
    .hero-actions {
        flex-direction: column;
        align-items: flex-start;
    }

    .service-card {
        padding: 1.8rem;
    }
}