:root {
    --kei-blue: #0e2a66;
    --kei-blue-strong: #081c45;
    --kei-ink: #121c2f;
    --kei-muted: #5f6b7c;
    --kei-bg: #f5f7fa;
    --kei-surface: #ffffff;
    --kei-surface-soft: #eef2f7;
    --kei-border: #d8e0ea;
    --kei-dark: #091120;
    --kei-success: #0f766e;
    --kei-danger: #b42318;
    --kei-radius-sm: 6px;
    --kei-radius-md: 10px;
    --kei-radius-lg: 14px;
    --kei-shadow: 0 18px 40px rgba(8, 28, 69, 0.08);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    min-height: 100vh;
    background: var(--kei-bg);
    color: var(--kei-ink);
    font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
a:hover { color: var(--kei-blue); }
img { max-width: 100%; display: block; }

.kei-container { max-width: 1240px; padding-inline: clamp(20px, 5vw, 96px); margin-inline: auto; }
.narrow-copy { max-width: 780px; }
.section-space { padding-block: clamp(80px, 10vw, 120px); }
.section-space-sm { padding-block: clamp(56px, 7vw, 88px); }
.section-alt { background: var(--kei-surface-soft); }
.border-top-soft { border-top: 1px solid var(--kei-border); }

.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: rgba(245, 247, 250, 0.94);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(216, 224, 234, 0.9);
}

.navbar { min-height: 78px; }
.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    color: var(--kei-ink);
}
.brand-mark {
    width: 42px;
    height: 42px;
    border-radius: var(--kei-radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--kei-blue);
    color: #fff;
    font-weight: 800;
    letter-spacing: 0.08em;
    font-size: 0.92rem;
}
.brand-copy { display: flex; flex-direction: column; line-height: 1.1; }
.brand-copy strong { font-size: 0.96rem; font-weight: 700; }
.brand-copy small { color: var(--kei-muted); font-size: 0.74rem; }

.nav-link {
    color: var(--kei-muted);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 10px 12px !important;
    border-radius: var(--kei-radius-sm);
}
.nav-link.active,
.nav-link:hover,
.nav-link:focus-visible {
    color: var(--kei-blue);
    background: rgba(14, 42, 102, 0.06);
}

.btn {
    border-radius: var(--kei-radius-sm);
    padding: 0.82rem 1.2rem;
    font-weight: 600;
    border-width: 1px;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-brand {
    background: var(--kei-blue);
    color: #fff;
    border-color: var(--kei-blue);
    box-shadow: 0 12px 24px rgba(14, 42, 102, 0.16);
}
.btn-brand:hover,
.btn-brand:focus-visible { background: var(--kei-blue-strong); color: #fff; border-color: var(--kei-blue-strong); }
.btn-ghost {
    background: rgba(14, 42, 102, 0.04);
    color: var(--kei-ink);
    border: 1px solid var(--kei-border);
}
.btn-outline-dark { border-color: #b7c2d2; color: var(--kei-ink); }
.btn-outline-dark:hover { background: var(--kei-dark); border-color: var(--kei-dark); color: #fff; }

.eyebrow {
    display: inline-block;
    font-size: 0.76rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--kei-blue);
    font-weight: 700;
}
.display-title,
.page-title,
.section-title,
.hero-stage-main h2,
.footer-title {
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--kei-ink);
}
.display-title { font-size: clamp(2.7rem, 6vw, 4.9rem); line-height: 0.95; max-width: 11ch; }
.page-title { font-size: clamp(2.2rem, 4vw, 3.6rem); line-height: 1.02; max-width: 15ch; }
.section-title,
.footer-title { font-size: clamp(1.8rem, 3vw, 3rem); line-height: 1.1; max-width: 18ch; }
.lead-copy { font-size: clamp(1.1rem, 2vw, 1.45rem); color: var(--kei-blue-strong); font-weight: 600; margin-top: 1rem; }
.support-copy,
.page-copy,
.section-copy,
.hero-stage-main p,
.footer-copy { max-width: 720px; color: var(--kei-muted); font-size: 1rem; }
.section-heading-row { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 1rem; }
.text-link { color: var(--kei-blue); font-weight: 600; }

.hero { min-height: calc(100vh - 78px); }
.hero-stats { display: flex; flex-wrap: wrap; gap: 14px; }
.stat-chip {
    min-width: 148px;
    padding: 16px 18px;
    border-radius: var(--kei-radius-md);
    border: 1px solid var(--kei-border);
    background: var(--kei-surface);
    box-shadow: var(--kei-shadow);
}
.stat-chip strong { display: block; font-size: 1.35rem; color: var(--kei-blue); }
.stat-chip span { color: var(--kei-muted); font-size: 0.92rem; }
.hero-stage {
    border-radius: var(--kei-radius-lg);
    background: var(--kei-dark);
    color: #fff;
    padding: clamp(24px, 4vw, 36px);
    box-shadow: 0 28px 60px rgba(9, 17, 32, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.hero-stage-main {
    padding: 22px;
    border: 1px solid rgba(255, 255, 255, 0.12);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--kei-radius-md);
    margin-bottom: 18px;
}
.hero-stage-main h2, .hero-stage-main p, .stage-kicker { color: #fff; }
.stage-kicker { font-size: 0.75rem; letter-spacing: 0.12em; text-transform: uppercase; opacity: 0.7; font-weight: 700; }
.hero-stage-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.mini-panel {
    padding: 16px;
    border-radius: var(--kei-radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
}
.mini-panel span { font-size: 0.74rem; opacity: 0.7; }
.mini-panel strong { display: block; margin-top: 10px; font-size: 1rem; }
.mini-panel p { color: rgba(255, 255, 255, 0.68); font-size: 0.88rem; margin: 10px 0 0; }

.service-card,
.project-card,
.news-card,
.value-card,
.quote-card,
.philosophy-card,
.app-card,
.detail-panel,
.contact-strip {
    background: var(--kei-surface);
    border: 1px solid var(--kei-border);
    border-radius: var(--kei-radius-lg);
    box-shadow: var(--kei-shadow);
}
.service-card,
.project-card,
.news-card,
.value-card,
.quote-card,
.philosophy-card,
.app-card { padding: 24px; }
.service-card h3,
.project-card h3,
.news-card h3,
.value-card h3,
.quote-card h2,
.philosophy-card h3,
.app-card h2 { font-size: 1.28rem; font-weight: 700; margin-bottom: 0.85rem; }
.service-code {
    display: inline-flex;
    width: 42px;
    height: 42px;
    align-items: center;
    justify-content: center;
    border-radius: var(--kei-radius-sm);
    background: var(--kei-surface-soft);
    color: var(--kei-blue);
    font-weight: 800;
    margin-bottom: 16px;
}
.service-code.large { width: 58px; height: 58px; font-size: 1.1rem; }
.service-card p,
.project-card p,
.news-card p,
.value-card p,
.quote-card p,
.philosophy-card p,
.app-card p,
.app-card li { color: var(--kei-muted); }
.service-card small { display: block; margin-top: 1rem; color: var(--kei-blue); font-weight: 600; }
.service-card:hover,
.project-card:hover,
.news-card:hover,
.value-card:hover { transform: translateY(-4px); border-color: #c2cede; }
.project-card { min-height: 280px; position: relative; overflow: hidden; }
.project-card::after {
    content: '';
    position: absolute;
    inset: auto 24px 24px auto;
    width: 48px;
    height: 2px;
    background: var(--kei-blue);
}
.project-card.tall { min-height: 320px; }
.project-category,
.news-date,
.footer-label {
    display: inline-block;
    color: var(--kei-blue);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 14px;
}
.cta-band { background: var(--kei-dark); color: #fff; }
.cta-band .section-title, .cta-band .section-copy, .cta-band .eyebrow { color: #fff; }
.cta-band .section-copy { opacity: 0.76; }
.contact-strip { padding: clamp(24px, 4vw, 34px); display: flex; justify-content: space-between; align-items: center; gap: 24px; }

.quote-card,
.philosophy-card { height: 100%; }
.bullet-list,
.ordered-list { padding-left: 1.1rem; margin-bottom: 0; }
.mini-values { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 1.5rem; }
.mini-values span {
    padding: 10px 12px;
    border-radius: var(--kei-radius-sm);
    background: var(--kei-surface-soft);
    border: 1px solid var(--kei-border);
    font-size: 0.92rem;
}
.service-detail {
    display: grid;
    grid-template-columns: 90px minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 24px;
    padding-block: 26px;
}
.service-detail.with-border { border-bottom: 1px solid var(--kei-border); }
.detail-panel { padding: 18px; }
.app-card.form-stack,
.app-card.info-stack { padding: clamp(22px, 4vw, 30px); }
.form-label { font-weight: 600; font-size: 0.92rem; color: var(--kei-ink); }
.form-control,
.form-select,
textarea {
    border-radius: var(--kei-radius-sm);
    border: 1px solid #c7d1df;
    padding: 0.84rem 0.95rem;
    color: var(--kei-ink);
    background: #fff;
}
.form-control:focus,
.form-select:focus,
textarea:focus {
    border-color: #8ca4cf;
    box-shadow: 0 0 0 0.18rem rgba(14, 42, 102, 0.08);
}
.form-hint { display: block; margin-top: 8px; color: var(--kei-muted); font-size: 0.82rem; }
.consent-list { display: grid; gap: 12px; }
.consent-item {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 14px 16px;
    border: 1px solid var(--kei-border);
    border-radius: var(--kei-radius-sm);
    background: var(--kei-surface-soft);
}
.soft-alert { border-radius: var(--kei-radius-md); box-shadow: var(--kei-shadow); }
.ordered-list li + li,
.bullet-list li + li { margin-top: 0.65rem; }

.dashboard-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; }
.filter-bar { padding: 22px; }
.table-card { padding: 0; overflow: hidden; }
.table thead th { background: var(--kei-surface-soft); color: var(--kei-muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.06em; }
.table td, .table th { padding: 18px 20px; border-color: var(--kei-border); }
.table-subtext { color: var(--kei-muted); font-size: 0.88rem; margin-top: 4px; }
.empty-state { padding: 24px; color: var(--kei-muted); text-align: center; }
.detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}
.detail-grid span { display: block; color: var(--kei-muted); font-size: 0.84rem; margin-bottom: 6px; }
.detail-grid strong { font-size: 1rem; }
.media-links { display: flex; gap: 12px; flex-wrap: wrap; }
.article-body p + p { margin-top: 1rem; }

.site-footer { background: #fff; border-top: 1px solid var(--kei-border); }
.footer-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.footer-grid div { display: flex; flex-direction: column; gap: 8px; }
.footer-bottom {
    margin-top: 36px;
    padding-top: 18px;
    border-top: 1px solid var(--kei-border);
    display: flex;
    justify-content: space-between;
    gap: 16px;
    color: var(--kei-muted);
    font-size: 0.92rem;
}

@media (max-width: 991.98px) {
    .hero { min-height: auto; }
    .display-title, .page-title, .section-title, .footer-title { max-width: 100%; }
    .section-heading-row, .dashboard-head, .contact-strip, .footer-bottom { flex-direction: column; align-items: flex-start; }
    .hero-stage-grid { grid-template-columns: 1fr; }
    .service-detail { grid-template-columns: 1fr; }
}

@media (max-width: 767.98px) {
    .navbar-collapse {
        background: rgba(255, 255, 255, 0.97);
        border: 1px solid var(--kei-border);
        border-radius: var(--kei-radius-md);
        padding: 18px;
        margin-top: 14px;
    }
    .detail-grid { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; }
    .hero-stats { display: grid; grid-template-columns: 1fr; }
    .contact-strip { align-items: flex-start; }
}