:root{--color-primary:#0f172a;--color-on-primary:#fff;--color-secondary:#334155;--color-accent:#2563eb;--color-link:#2563eb;--color-link-hover:#1d4ed8;--color-link-on-dark:#93c5fd;--color-link-on-dark-hover:#bfdbfe;--color-background:#fff;--color-surface:#f8fafc;--color-surface-muted:#f1f5f9;--color-text:#1e293b;--color-text-muted:#64748b;--color-border:#e2e8f0;--color-success:#16a34a;--color-warning:#ca8a04;--color-error:#dc2626;--radius-sm:4px;--radius-md:8px;--radius-lg:16px;--space-xs:4px;--space-sm:8px;--space-md:16px;--space-lg:24px;--space-xl:40px;--space-xxl:80px;--shadow-soft:0 18px 50px #0f172a14}*{box-sizing:border-box}body{background:var(--color-background);color:var(--color-text);font-family:var(--font-noto-sans-jp), system-ui, sans-serif;margin:0;font-size:1rem;line-height:1.8}.visually-hidden{clip:rect(0 0 0 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0}:focus-visible{outline-offset:3px;outline:3px solid #2563eb61}.site-shell{min-height:100vh}.container{width:min(1120px,100% - 160px);margin:0 auto}.narrow{width:min(760px,100% - 160px);margin:0 auto}.site-header{z-index:20;border-bottom:1px solid var(--color-border);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#fffffff0;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:var(--space-lg);width:min(1280px,100% - 80px);min-height:72px;padding:12px 0;display:flex}.brand{min-width:0;color:var(--color-primary);flex:none;align-items:center;gap:14px;font-weight:700;line-height:1.3;display:inline-flex}.brand-copy{gap:0;min-width:0;display:grid}.brand-copy strong,.brand-copy small{white-space:nowrap}.brand small{color:var(--color-text-muted);letter-spacing:0;font-size:.72rem;font-weight:700}.site-logo{flex:none;width:auto;height:auto;display:block}.site-logo-header{width:116px;height:auto}.site-logo-footer{width:122px;height:auto}.site-nav{color:var(--color-secondary);flex-wrap:nowrap;justify-content:flex-end;align-items:center;gap:clamp(11px,1.2vw,18px);font-size:clamp(.84rem,.78rem + .16vw,.92rem);font-weight:700;display:flex}.site-nav a{color:var(--color-secondary);white-space:nowrap;text-decoration:none}.site-nav a:hover{color:var(--color-link)}.site-menu{min-width:0;margin-left:auto;position:relative}.site-menu-toggle{opacity:0;pointer-events:none;position:absolute}.nav-toggle{display:none}.nav-toggle-bars{gap:4px;width:18px;display:inline-grid}.nav-toggle-bars span{background:var(--color-primary);border-radius:999px;width:100%;height:2px;display:block}.button{border-radius:var(--radius-md);border:1px solid #0000;justify-content:center;align-items:center;min-height:48px;padding:12px 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li:before{color:var(--color-success);content:"✓";font-weight:700;position:absolute;left:0}.diagnosis-hero-card-actions{gap:8px;margin-top:22px;display:grid}.diagnosis-hero-card-actions .button{text-align:center;width:100%;min-height:54px;padding-inline:14px}.diagnosis-hero-card-actions>span{color:var(--color-text-muted);text-align:center;font-size:.76rem;line-height:1.5}.diagnosis-title-with-mascot{justify-content:center;align-items:center;gap:14px;min-width:0;display:flex}.diagnosis-mascot{filter:drop-shadow(0 5px 10px #0f172a24);flex:none;width:56px;height:auto;display:block}.diagnosis-hero-card-title{justify-content:flex-start;gap:12px;margin-top:18px}.diagnosis-mascot-hero{width:64px}.diagnosis-dialog{border-radius:var(--radius-lg);width:min(760px,100% - 32px);max-width:none;max-height:min(92dvh,900px);color:var(--color-text);background:#fff;border:0;margin:auto;padding:0;overflow:hidden;box-shadow:0 30px 90px 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var(--color-border);border-radius:var(--radius-md);background:#fff;width:100%;height:auto;margin-bottom:20px}.hero-main .hero-image,.hero-course .hero-image{background:0 0;border:0;border-radius:0;width:100%;height:100%;margin-bottom:0}.section{padding:64px 0}.section-muted{background:var(--color-surface)}.section-head{justify-content:space-between;align-items:end;gap:24px;margin-bottom:28px;display:flex}.section-head h2,.content h2{color:var(--color-primary);margin:0;font-size:1.75rem;line-height:1.4}.section-head p{max-width:560px;color:var(--color-text-muted);margin:8px 0 0}.school-news-section{padding-bottom:48px}.school-news-list{border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border)}.school-news-item{border-top:1px solid var(--color-border);grid-template-columns:10rem minmax(0,1fr);column-gap:16px;padding:18px 0;display:grid}.school-news-item:first-child{border-top:0}.school-news-date{color:var(--color-primary);white-space:nowrap;font-size:.94rem;font-weight:700;line-height:1.7}.school-news-body{gap:4px;min-width:0;display:grid}.school-news-item-title{color:var(--color-primary);flex-wrap:wrap;align-items:baseline;gap:8px;margin:0;font-size:1rem;font-weight:700;line-height:1.7;display:flex}.school-news-item-title a{color:var(--color-primary);overflow-wrap:anywhere;font-weight:700}.school-news-item-title a:hover{color:var(--color-link-hover)}.school-news-badge{border-radius:var(--radius-sm);background:var(--color-error);color:#fff;align-items:center;padding:3px 7px;font-size:.76rem;font-weight:700;line-height:1.25;display:inline-flex}.school-news-body p{color:var(--color-secondary);overflow-wrap:anywhere;margin:0}.school-news-body p a{color:var(--color-secondary)}.school-news-body p a:hover{color:var(--color-link-hover)}.course-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;display:grid}.course-list-link{margin-top:var(--space-lg);justify-content:center;display:flex}.free-course-section{margin-bottom:40px}.free-course-section-head{margin-bottom:18px}.course-section-copy-head>div{width:100%}.section-head.course-section-copy-head p{white-space:nowrap;width:100%;max-width:none}.free-course-banner{border-radius:var(--radius-md);width:100%;color:var(--color-primary);background:#fff7ed;border:1px solid #fdba74;grid-template-columns:260px minmax(0,1fr) max-content;align-items:stretch;gap:0;padding:0;text-decoration:none;display:grid;overflow:hidden}.free-course-banner-media{border-radius:var(--radius-md) 0 0 var(--radius-md);background:#fff;border-right:1px solid #f9731647;width:100%;min-height:100%;display:block;position:relative;overflow:hidden}.free-course-banner-thumbnail{object-fit:cover;object-position:center}.free-course-banner:hover{color:var(--color-primary);border-color:#fb923c}.free-course-banner-label{border-radius:var(--radius-sm);color:#fff;background:#f97316;flex:none;justify-content:center;align-items:center;padding:5px 9px;font-size:.82rem;font-weight:700;line-height:1.3;display:inline-flex}.free-course-banner-body{align-content:center;gap:6px;min-width:0;padding:24px 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