/* Design Philosophy: Editorial Civic Design for case study archive. Emphasize scanning, chronology, and practical outcomes. */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    html { scroll-behavior: smooth; }
    body { font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Yu Gothic', sans-serif; color: #2c2c2c; line-height: 1.7; background: #fff; }
    a { text-decoration: none; color: inherit; }
    :root { --orange: #E87722; --orange-dark: #c9621a; --orange-light: #fdf0e6; --gray-light: #f5f5f5; --gray: #888; --text: #2c2c2c; }
    .mockup-banner { background: #1a1a2e; color: #fff; text-align: center; padding: 12px; font-size: 13px; font-weight: 600; letter-spacing: 0.05em; position: sticky; top: 64px; z-index: 99; }
    .mockup-banner span { color: var(--orange); }
    .page-nav { background: #f0f0f0; padding: 16px 80px; display: flex; gap: 8px; align-items: center; font-size: 12px; color: #888; border-bottom: 1px solid #ddd; }
    .page-nav-links { display: flex; gap: 12px; margin-left: auto; }
    .page-nav-links a { background: var(--orange); color: #fff; padding: 6px 16px; border-radius: 20px; font-size: 12px; font-weight: 700; }
    .page-nav-links a.inactive { background: #ddd; color: #888; }
    .page-hero { margin-top: 0px; background: linear-gradient(135deg, #1a1a2e 0%, #2d2d4e 100%); color: #fff; padding: 80px 0 60px; position: relative; overflow: hidden; }
    .page-hero::before { content: ''; position: absolute; top: -50%; right: -10%; width: 500px; height: 500px; background: var(--orange); opacity: 0.08; border-radius: 50%; }
    .breadcrumb { font-size: 12px; color: rgba(255,255,255,0.5); margin-bottom: 20px; }
    .breadcrumb a { color: rgba(255,255,255,0.7); }
    .page-hero-tag { display: inline-block; background: var(--orange); color: #fff; font-size: 11px; font-weight: 700; letter-spacing: 0.1em; padding: 4px 12px; border-radius: 20px; margin-bottom: 16px; }
    .page-hero h1 { font-size: 36px; font-weight: 900; line-height: 1.3; margin-bottom: 16px; }
    .page-hero p { font-size: 15px; color: rgba(255,255,255,0.75); max-width: 600px; line-height: 1.9; }
    section { padding: 80px 0; }
    .section-tag { font-size: 11px; font-weight: 700; letter-spacing: 0.15em; color: var(--orange); text-transform: uppercase; margin-bottom: 12px; }
    .section-title { font-size: 28px; font-weight: 900; color: var(--text); line-height: 1.4; margin-bottom: 16px; }
    .section-desc { font-size: 15px; color: #555; line-height: 1.9; max-width: 680px; margin-bottom: 48px; }
    .hero-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 18px; margin-top: 32px; max-width: 980px; }
    .hero-summary-item { background: rgba(255,255,255,0.08); border: 1px solid rgba(255,255,255,0.14); border-radius: 18px; padding: 18px 20px; backdrop-filter: blur(6px); }
    .hero-summary-item strong { display: block; font-size: 13px; font-weight: 800; margin-bottom: 6px; color: #fff; }
    .hero-summary-item span { font-size: 13px; line-height: 1.8; color: rgba(255,255,255,0.82); }
    /* KPI Section */
    .kpi-section { background: var(--orange); color: #fff; padding: 5px 0; }
    .kpi-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; text-align: center; }
    .kpi-item { padding: 12px 10px; }
    .kpi-item .num { font-size: 46px; font-weight: 900; line-height: 1; }
    .kpi-item .num span { font-size: 22px; }
    .kpi-item .label { font-size: 13px; opacity: 0.9; margin-top: 10px; line-height: 1.6; }
    .works-section { background: #fff; }
    .works-block + .works-block { margin-top: 72px; }
    .works-block-intro { display: flex; justify-content: space-between; align-items: flex-end; gap: 24px; margin-bottom: 32px; }
    .works-block-intro p { font-size: 14px; color: #666; line-height: 1.9; max-width: 680px; }
    .works-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
    .works-card { border: 1.5px solid #eee; border-radius: 18px; overflow: hidden; background: #fff; transition: box-shadow 0.2s, transform 0.2s; }
    .works-card:hover { box-shadow: 0 10px 28px rgba(0,0,0,0.08); transform: translateY(-4px); }
    .works-card-header { padding: 16px 20px; background: var(--orange-light); display: flex; justify-content: space-between; align-items: center; gap: 12px; }
    .works-card-num { font-size: 11px; font-weight: 700; color: var(--orange); }
    .works-card-tag { display: inline-block; background: var(--orange); color: #fff; font-size: 10px; font-weight: 700; padding: 4px 10px; border-radius: 20px; }
    .works-card-body { padding: 22px 20px 20px; }
    .works-card-title { font-size: 16px; font-weight: 800; line-height: 1.6; margin-bottom: 10px; }
    .works-card-meta { font-size: 12px; color: var(--orange); font-weight: 700; margin-bottom: 10px; }
    .works-card-desc { font-size: 13px; color: #666; line-height: 1.8; }
    .works-card-link { display: inline-flex; align-items: center; gap: 8px; margin-top: 18px; font-size: 13px; font-weight: 700; color: var(--orange); }
    .works-card-link::after { content: '→'; font-size: 13px; }
    .works-card-date { font-size: 12px; color: #999; margin-top: 14px; }

        @media (max-width: 1100px) {
            .hero-summary,
            .kpi-grid,
            .works-grid { grid-template-columns: 1fr 1fr; }
            .works-block-intro { margin-bottom: 22px; }
        }

        @media (max-width: 767px) {
            body { font-size: 12px; }
            .page-nav { display: none; }
            .page-hero { padding: 72px 0 48px; }
            .page-hero h1 { font-size: 30px; }
            .page-hero p { font-size: 13px; line-height: 1.85; }

            section { padding: 56px 0; }
            .kpi-section { padding: 10px 0; }
            .kpi-grid,
            .works-grid,
            .hero-summary { grid-template-columns: 1fr; gap: 14px; }
            .works-block + .works-block { margin-top: 48px; }
            .section-title { font-size: 24px; }
            .section-desc,
            .works-block-intro p,
            .works-card-desc { font-size: 12px; line-height: 1.8; }
            .works-card-header { padding: 14px 14px; }
            .works-card-body { padding: 16px 14px 16px; }
            .works-card-title { font-size: 15px; }
            .works-card-meta,
            .works-card-link,
            .works-card-num { font-size: 11px; }

        }