:root {
    --site-bg: #050710;
    --site-panel: #0a0f1d;
    --site-panel-soft: rgba(15, 23, 42, 0.82);
    --site-text: #f4f6ff;
    --site-muted: #a8b5d6;
    --site-accent: #4cc3ff;
    --site-accent-2: #a855f7;
    --site-border: rgba(255, 255, 255, 0.14);
    --site-max: 1120px;
}

.content-eyebrow {
    margin: 0 0 0.75rem;
    color: var(--site-accent);
    font-family: "Sora", sans-serif;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
}

.content-page {
    margin: 0;
    min-height: 100vh;
    overflow-x: hidden;
    color: var(--site-text);
    background:
        radial-gradient(circle at 20% 10%, rgba(0, 122, 255, 0.15), transparent 32%),
        radial-gradient(circle at 80% 0%, rgba(168, 85, 247, 0.13), transparent 28%),
        var(--site-bg);
    font-family: "Noto Sans JP", "Sora", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    -webkit-font-smoothing: antialiased;
}

.content-header {
    border-bottom: 1px solid var(--site-border);
}

.content-header-inner,
.content-main,
.content-footer-inner {
    width: min(var(--site-max), calc(100% - 2rem));
    margin: 0 auto;
}

.content-header-inner {
    min-height: 76px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.content-logo {
    color: #fff;
    text-decoration: none;
    font-family: "Sora", sans-serif;
    font-weight: 900;
    letter-spacing: -0.05em;
}

.content-logo span {
    color: var(--site-accent);
}

.content-nav {
    display: flex;
    gap: 0.35rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.content-nav a {
    color: var(--site-muted);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 0.5rem 0.7rem;
    border-radius: 999px;
}

.content-nav a:hover,
.content-nav a:focus-visible {
    color: #fff;
    background: rgba(255, 255, 255, 0.08);
    outline: none;
}

.content-main {
    padding: 5rem 0 7rem;
}

.content-hero {
    max-width: 820px;
    padding-bottom: 3.5rem;
}

.content-hero h1 {
    margin: 0;
    font-size: clamp(2.3rem, 6vw, 5rem);
    line-height: 1.08;
    letter-spacing: -0.055em;
    overflow-wrap: anywhere;
}

.content-hero p {
    margin: 1.4rem 0 0;
    color: var(--site-muted);
    font-size: 1.08rem;
    line-height: 1.95;
}

.content-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: 2rem;
    align-items: start;
}

.article-card,
.info-card {
    padding: clamp(1.35rem, 3vw, 2.4rem);
    border: 1px solid var(--site-border);
    border-radius: 24px;
    background: var(--site-panel-soft);
}

.article-card + .article-card {
    margin-top: 1rem;
}

.article-card h2 {
    margin: 0 0 1rem;
    font-size: clamp(1.45rem, 3vw, 2rem);
    letter-spacing: -0.035em;
}

.article-card h3 {
    margin: 2rem 0 0.65rem;
    font-size: 1.12rem;
}

.article-card p,
.article-card li,
.info-card p,
.info-card li {
    color: #c4cee5;
    line-height: 1.9;
}

.article-card a,
.info-card a {
    color: var(--site-accent);
}

.article-card ul,
.article-card ol,
.info-card ul {
    padding-left: 1.35rem;
}

.note-box {
    margin: 1.4rem 0;
    padding: 1rem 1.15rem;
    border-left: 3px solid var(--site-accent);
    border-radius: 0 14px 14px 0;
    color: #dbeafe;
    background: rgba(76, 195, 255, 0.08);
    line-height: 1.8;
}

.info-card {
    position: sticky;
    top: 1rem;
}

.info-card h2 {
    margin-top: 0;
    font-size: 1rem;
}

.info-card ul {
    margin-bottom: 0;
}

.content-cta {
    display: inline-flex;
    margin-top: 1rem;
    padding: 0.8rem 1rem;
    color: #04111f !important;
    background: var(--site-accent);
    border-radius: 999px;
    text-decoration: none;
    font-weight: 900;
}

.content-footer {
    border-top: 1px solid var(--site-border);
}

.content-footer-inner {
    padding: 2.5rem 0;
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    color: var(--site-muted);
    font-size: 0.82rem;
}

.content-footer a {
    color: var(--site-muted);
}

@media (max-width: 820px) {
    .content-layout {
        grid-template-columns: 1fr;
    }

    .info-card {
        position: static;
    }

    .content-header-inner,
    .content-footer-inner {
        align-items: flex-start;
        flex-direction: column;
    }

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

@media (max-width: 560px) {
    .content-main {
        padding-top: 3.5rem;
    }
}