:root {
    --hyas-navy: #0f2d6b;
    --hyas-navy-deep: #081b4a;
    --hyas-ink: #11285f;
    --hyas-red: #df2a1d;
    --hyas-paper: #f5f9ff;
    --hyas-line: rgba(15, 45, 107, 0.14);
    --hyas-shadow: rgba(8, 27, 74, 0.10);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Noto Sans JP", sans-serif;
    color: var(--hyas-ink);
    background:
        radial-gradient(circle at top center, rgba(255, 255, 255, 0.98) 0%, rgba(247, 250, 255, 0.96) 46%, rgba(236, 243, 255, 0.98) 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    border: 1px solid rgba(15, 45, 107, 0.18);
    pointer-events: none;
    z-index: 100;
}

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

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

.container {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 40;
    border-top: 4px solid var(--hyas-navy-deep);
    border-bottom: 1px solid var(--hyas-line);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(14px);
    box-shadow: 0 16px 34px rgba(8, 27, 74, 0.06);
}

.topbar-inner {
    min-height: 84px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.brand-lockup {
    min-width: 0;
    line-height: 1;
}

.brand-caption {
    display: block;
    font-size: 0.62rem;
    font-weight: 900;
    letter-spacing: 0.34em;
    color: var(--hyas-navy-deep);
    margin-bottom: 0.2rem;
    white-space: nowrap;
}

.brand-wordmark {
    display: block;
    font-family: "Cormorant Garamond", "Times New Roman", serif;
    font-size: clamp(2.2rem, 4vw, 3rem);
    line-height: 0.78;
    letter-spacing: -0.08em;
    color: var(--hyas-navy-deep);
    white-space: nowrap;
}

.brand-dot {
    color: var(--hyas-red);
}

.topnav {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-link {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--hyas-navy);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 1rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--hyas-navy) 0%, var(--hyas-navy-deep) 100%);
    color: #ffffff;
    font-size: 0.8rem;
    font-weight: 900;
    box-shadow: 0 14px 28px rgba(8, 27, 74, 0.16);
}

.hero {
    padding: 4rem 0 2.75rem;
    border-bottom: 1px solid var(--hyas-line);
}

.hero-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.9fr);
    gap: 2rem;
    align-items: start;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--hyas-navy);
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0.24em;
    text-transform: uppercase;
}

.eyebrow::before,
.eyebrow::after {
    content: "";
    width: 2.2rem;
    height: 1px;
    background: rgba(15, 45, 107, 0.28);
}

.hero-copy h1 {
    margin: 1rem 0 1rem;
    font-size: clamp(2.2rem, 4.2vw, 4rem);
    line-height: 1.12;
    letter-spacing: -0.04em;
    color: #0c234f;
}

.hero-copy p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.9;
    color: #41506f;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 1.75rem;
}

.button-primary,
.button-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 1.2rem;
    border-radius: 999px;
    font-size: 0.92rem;
    font-weight: 900;
}

.button-primary {
    background: linear-gradient(135deg, var(--hyas-navy) 0%, var(--hyas-navy-deep) 100%);
    color: #ffffff;
    box-shadow: 0 16px 30px rgba(8, 27, 74, 0.16);
}

.button-secondary {
    border: 1px solid var(--hyas-line);
    background: rgba(255, 255, 255, 0.86);
    color: var(--hyas-navy);
}

.hero-panel,
.surface-card,
.surface-card-soft,
.notice-box {
    border: 1px solid var(--hyas-line);
    border-radius: 28px;
    box-shadow: 0 24px 48px var(--hyas-shadow);
}

.hero-panel {
    padding: 1.6rem;
    background: rgba(255, 255, 255, 0.84);
}

.hero-icon-wrap {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.hero-icon {
    width: 84px;
    height: 84px;
    object-fit: contain;
    padding: 0.85rem;
    border-radius: 22px;
    background: rgba(230, 240, 255, 0.7);
}

.hero-panel h2 {
    margin: 0;
    font-size: 1.35rem;
    line-height: 1.4;
    color: #0d2654;
}

.hero-panel p {
    margin: 0.9rem 0 0;
    color: #4f5f80;
    font-size: 0.92rem;
    line-height: 1.8;
}

.summary-list {
    margin: 1.25rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.75rem;
}

.summary-list li {
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
    font-size: 0.92rem;
    line-height: 1.7;
    color: #2f4165;
}

.summary-list li::before {
    content: "";
    width: 10px;
    height: 10px;
    margin-top: 0.45rem;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--hyas-red) 0%, var(--hyas-navy) 100%);
    flex-shrink: 0;
}

.overview-strip {
    padding: 1.4rem 1.5rem;
    margin-top: 2rem;
    border-radius: 24px;
    border: 1px solid var(--hyas-line);
    background: rgba(255, 255, 255, 0.78);
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.overview-item {
    padding: 0.4rem 0;
}

.overview-item .label {
    display: block;
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--hyas-navy);
    margin-bottom: 0.45rem;
}

.overview-item .value {
    font-size: 0.98rem;
    font-weight: 800;
    line-height: 1.7;
    color: #0d2654;
}

.illustration-card {
    margin-top: 2rem;
    padding: 1rem;
    border: 1px solid var(--hyas-line);
    border-radius: 30px;
    background: rgba(255, 255, 255, 0.84);
    box-shadow: 0 24px 48px rgba(8, 27, 74, 0.10);
}

.illustration-card img {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    border-radius: 24px;
}

.illustration-card .caption {
    margin-top: 0.85rem;
    color: #516383;
    font-size: 0.88rem;
    line-height: 1.75;
}

.media-split {
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    gap: 1rem;
    align-items: stretch;
}

.media-text-card {
    padding: 1.35rem;
}

.media-text-card h3 {
    margin: 0 0 0.65rem;
    font-size: 1.05rem;
    line-height: 1.45;
    color: #0d2654;
}

.media-text-card p {
    margin: 0;
    color: #4b5c7c;
    font-size: 0.92rem;
    line-height: 1.78;
}

.section {
    padding: 3rem 0;
    border-bottom: 1px solid rgba(15, 45, 107, 0.08);
}

.section:last-of-type {
    border-bottom: none;
}

.section-head {
    max-width: 760px;
    margin-bottom: 1.4rem;
}

.section-head span {
    display: inline-block;
    font-size: 0.74rem;
    font-weight: 900;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--hyas-navy);
}

.section-head h2 {
    margin: 0.65rem 0 0.7rem;
    font-size: clamp(1.8rem, 3vw, 2.7rem);
    line-height: 1.2;
    color: #0d2654;
}

.section-head p {
    margin: 0;
    color: #4a5a7b;
    font-size: 0.98rem;
    line-height: 1.85;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.card-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.surface-card-soft {
    padding: 1.3rem;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 250, 255, 0.96) 100%);
}

.surface-card-soft h3,
.surface-card h3 {
    margin: 0 0 0.65rem;
    font-size: 1.05rem;
    line-height: 1.45;
    color: #0d2654;
}

.surface-card-soft p,
.surface-card p {
    margin: 0;
    color: #4b5c7c;
    font-size: 0.92rem;
    line-height: 1.75;
}

.chip {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.7rem;
    border-radius: 999px;
    background: rgba(230, 240, 255, 0.76);
    color: var(--hyas-navy);
    font-size: 0.72rem;
    font-weight: 900;
    letter-spacing: 0.08em;
    margin-bottom: 0.7rem;
}

.bullet-list,
.timeline-list {
    margin: 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.8rem;
}

.bullet-list li,
.timeline-list li {
    display: flex;
    gap: 0.85rem;
    align-items: flex-start;
    color: #314262;
    font-size: 0.94rem;
    line-height: 1.8;
}

.bullet-list li::before {
    content: "●";
    color: var(--hyas-red);
    font-size: 0.72rem;
    margin-top: 0.45rem;
    flex-shrink: 0;
}

.timeline-step {
    width: 30px;
    height: 30px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--hyas-navy) 0%, var(--hyas-navy-deep) 100%);
    color: #ffffff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.76rem;
    font-weight: 900;
    flex-shrink: 0;
    margin-top: 0.08rem;
}

.notice-box {
    padding: 1.35rem;
    background: rgba(255, 255, 255, 0.84);
}

.notice-box h3 {
    margin: 0 0 0.7rem;
    font-size: 1rem;
    color: #0d2654;
}

.notice-box p {
    margin: 0;
    color: #4b5c7c;
    font-size: 0.92rem;
    line-height: 1.8;
}

.related-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
}

.related-card {
    padding: 1.25rem;
    border-radius: 24px;
    border: 1px solid var(--hyas-line);
    background: rgba(255, 255, 255, 0.88);
    box-shadow: 0 18px 38px rgba(8, 27, 74, 0.06);
}

.related-card h3 {
    margin: 0 0 0.55rem;
    font-size: 1rem;
    color: #0d2654;
}

.related-card p {
    margin: 0;
    color: #4b5c7c;
    font-size: 0.9rem;
    line-height: 1.7;
}

.related-card .link {
    display: inline-flex;
    margin-top: 0.9rem;
    font-size: 0.82rem;
    font-weight: 900;
    color: var(--hyas-navy);
}

.cta-band {
    margin-top: 2rem;
    padding: 1.6rem;
    border-radius: 28px;
    border: 1px solid var(--hyas-line);
    background: linear-gradient(145deg, var(--hyas-navy-deep) 0%, var(--hyas-navy) 100%);
    color: #ffffff;
    box-shadow: 0 24px 48px rgba(8, 27, 74, 0.16);
}

.cta-band h2 {
    margin: 0 0 0.55rem;
    font-size: clamp(1.55rem, 2.4vw, 2.1rem);
}

.cta-band p {
    margin: 0;
    color: rgba(255, 255, 255, 0.84);
    line-height: 1.85;
}

.cta-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.85rem;
    margin-top: 1.2rem;
}

.button-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 1.2rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.96);
    color: var(--hyas-navy-deep);
    font-size: 0.92rem;
    font-weight: 900;
}

.button-ghost {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 48px;
    padding: 0 1.2rem;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.22);
    color: #ffffff;
    font-size: 0.92rem;
    font-weight: 900;
}

.footer {
    padding: 2rem 0 3rem;
    color: #58709f;
    font-size: 0.8rem;
}

@media (max-width: 980px) {
    .hero-grid,
    .card-grid,
    .card-grid.two,
    .related-grid,
    .overview-strip {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 720px) {
    .topbar-inner {
        padding: 0.7rem 0;
        align-items: flex-start;
        flex-direction: column;
    }

    .topnav {
        width: 100%;
        justify-content: flex-start;
    }

    .hero {
        padding-top: 3rem;
    }

    .brand-wordmark {
        font-size: 2.35rem;
    }

    .hero-copy h1 {
        font-size: 2.15rem;
    }
}