:root{--color-primary:#008aab;--color-primary-dark:#00556a;--color-accent:#ff9047;--color-accent-soft:#ff7d8f;--color-mint:#01d3c0;--color-surface:#fcfeff;--color-surface-blue:#d6ecf2;--color-surface-mint:#d7fff6;--color-surface-peach:#ffeee3;--color-surface-yellow:#ffffd4;--color-ice:#ebf6f8;--color-lesson:#fcece1;--color-event:#fce9ed;--color-cta-tint:#fd83943d;--color-footer:#008aabcc;--color-white:#fbfffc;--font-size-body:1rem;--font-size-sm:.875rem;--font-size-xs:.75rem;--font-size-h2:clamp(1.75rem, 4vw, 3rem);--font-size-h3:clamp(1.125rem, 2.2vw, 1.5rem);--font-size-display:clamp(2rem, 5vw, 3rem);--space-section:clamp(3rem, 8vw, 6rem);--space-block:clamp(1.5rem, 4vw, 2.5rem);--container:min(100% - 2rem, 70rem);--radius-lg:2.5rem;--radius-md:1.5rem;--radius-pill:6.25rem;--shadow-header:0 2px 4px #00000040;--shadow-cta:2px 2px 4px #00000040}*,:before,:after{box-sizing:border-box}html{scroll-behavior:smooth}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}body{min-height:100svh;color:var(--color-primary-dark);font-family:var(--font-noto-sans-jp), "Hiragino Sans", "Hiragino Kaku Gothic ProN", sans-serif;font-size:var(--font-size-body);background:#fff;margin:0;line-height:1.7}img{vertical-align:middle;max-width:100%;height:auto}a{color:inherit}button{font:inherit;cursor:pointer}