:root {
    --nki-primary: #111827; /* Ink Black */
    --nki-accent: #B91C1C;  /* Editorial Red */
    --nki-bg: #F9FAFB;      /* Paper White */
    --nki-border: #E5E7EB;
    --nki-text: #374151;
    --nki-serif: 'Noto Serif JP', serif;
    --nki-sans: 'Noto Sans JP', sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: var(--nki-sans);
    color: var(--nki-text);
    background-color: var(--nki-bg);
    line-height: 1.8;
}

h1, h2, h3, h4, h5 {
    font-family: var(--nki-serif);
    color: var(--nki-primary);
    font-weight: 700;
    line-height: 1.4;
}

a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }

/* Top Bar */
.nki-topbar {
    background: var(--nki-primary);
    color: #fff;
    font-size: 0.75rem;
    padding: 8px 0;
    border-bottom: 3px solid var(--nki-accent);
}
.nki-container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.nki-topbar-inner { display: flex; justify-content: space-between; }

/* Header */
.nki-header {
    background: #fff;
    border-bottom: 1px solid var(--nki-border);
    padding: 30px 0;
    text-align: center;
}

.nki-logo {
    font-family: var(--nki-serif);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--nki-primary);
    letter-spacing: -1px;
    display: inline-block;
    margin-bottom: 20px;
}

.nki-nav {
    border-top: 1px solid var(--nki-border);
    border-bottom: 1px solid var(--nki-border);
    padding: 15px 0;
    margin-top: 10px;
}

.nki-menu {
    display: flex;
    justify-content: center;
    gap: 30px;
    font-weight: 700;
    font-size: 0.9rem;
}
.nki-menu a:hover { color: var(--nki-accent); }

/* Mobile Menu */
.nki-mobile-header { display: none; justify-content: space-between; align-items: center; padding: 15px 20px; background: #fff; border-bottom: 1px solid var(--nki-border); }
.nki-burger { background: none; border: none; font-size: 24px; cursor: pointer; }
.nki-mobile-nav { display: none; background: #fff; padding: 20px; position: absolute; top: 60px; left: 0; width: 100%; box-shadow: 0 10px 20px rgba(0,0,0,0.1); z-index: 100; }
.nki-mobile-nav a { display: block; padding: 10px 0; border-bottom: 1px solid #eee; font-weight: 700; }
.nki-mobile-nav.active { display: block; }

/* Hero Article */
.nki-hero-section { padding: 60px 0; background: #fff; border-bottom: 1px solid var(--nki-border); }
.nki-hero-grid { display: grid; grid-template-columns: 1.5fr 1fr; gap: 40px; align-items: center; }
.nki-hero-img { width: 100%; height: 400px; object-fit: cover; display: block; }
.nki-tag {
    display: inline-block;
    background: var(--nki-accent);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    padding: 4px 8px;
    margin-bottom: 15px;
    text-transform: uppercase;
}
.nki-hero-title { font-size: 2.2rem; margin-bottom: 20px; }
.nki-meta { font-size: 0.8rem; color: #6B7280; margin-top: 20px; display: flex; gap: 15px; }

/* News Grid */
.nki-section { padding: 60px 0; }
.nki-section-title {
    font-size: 1.5rem;
    border-left: 5px solid var(--nki-primary);
    padding-left: 15px;
    margin-bottom: 40px;
}

.nki-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.nki-card { transition: transform 0.2s; }
.nki-card:hover .nki-card-title { color: var(--nki-accent); }
.nki-card-img { width: 100%; height: 200px; object-fit: cover; margin-bottom: 15px; }
.nki-card-cat { font-size: 0.75rem; font-weight: 700; color: var(--nki-accent); text-transform: uppercase; margin-bottom: 5px; display: block; }
.nki-card-title { font-size: 1.2rem; margin-bottom: 10px; }
.nki-card-excerpt { font-size: 0.9rem; color: #6B7280; line-height: 1.6; }

/* Newsletter */
.nki-newsletter {
    background: var(--nki-primary);
    color: #fff;
    padding: 60px 20px;
    text-align: center;
    margin-top: 60px;
}
.nki-newsletter h2 { color: #fff; margin-bottom: 20px; }
.nki-input { padding: 12px 20px; width: 300px; border: none; font-family: var(--nki-sans); }
.nki-btn {
    padding: 12px 30px;
    background: var(--nki-accent);
    color: #fff;
    border: none;
    font-weight: 700;
    cursor: pointer;
    font-family: var(--nki-sans);
}

/* Footer */
.nki-footer {
    background: #fff;
    border-top: 1px solid var(--nki-border);
    padding: 60px 0 20px;
    font-size: 0.85rem;
    color: #6B7280;
}
.nki-footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 40px; margin-bottom: 40px; }
.nki-footer h4 { font-size: 1rem; margin-bottom: 20px; color: var(--nki-primary); }
.nki-footer a { display: block; margin-bottom: 8px; }
.nki-footer a:hover { color: var(--nki-accent); }
.nki-copy { text-align: center; padding-top: 20px; border-top: 1px solid #eee; }

/* Cookie */
.nki-cookie {
    position: fixed; bottom: 0; left: 0; width: 100%;
    background: #fff; padding: 20px; border-top: 4px solid var(--nki-accent);
    box-shadow: 0 -5px 20px rgba(0,0,0,0.1); display: none; z-index: 1000;
    text-align: center; font-size: 0.9rem;
}

@media (max-width: 768px) {
    .nki-header { display: none; }
    .nki-mobile-header { display: flex; }
    .nki-hero-grid { grid-template-columns: 1fr; }
    .nki-hero-title { font-size: 1.8rem; }
    .nki-input { width: 100%; margin-bottom: 10px; }
}