:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light;--bt-ink:#0e1733;--bt-canvas:#fff;--bt-surface-soft:#e7f0f7;--bt-text-muted:#556071;--bt-line:#c6cbd3;--bt-accent-yellow:#f6dc7c;--bt-accent-pink:#f0b8c4;--bt-accent-mint:#edf7ef;--bt-accent-cream:#f4eee5;--bt-danger:#a32a38;color:var(--bt-ink);background:var(--bt-canvas);font-synthesis:none;font-family:Hiragino Kaku Gothic ProN,Hiragino Kaku Gothic Pro,Noto Sans JP,sans-serif}*{box-sizing:border-box}body{color:var(--bt-ink);background:var(--bt-canvas);margin:0;font-size:16px;line-height:1.7}a{color:inherit;text-underline-offset:4px}button,input{font:inherit}.bt-frame{flex-direction:column;max-width:1440px;min-height:100svh;margin:auto;padding:0 64px;display:flex}.bt-header{border-bottom:1px solid var(--bt-line);justify-content:space-between;align-items:center;gap:24px;min-height:112px;display:flex}.bt-wordmark-link{flex:none;line-height:0;display:block}.bt-wordmark{width:150px;height:auto;display:block}.bt-header-actions{align-items:center;gap:24px;display:flex}.bt-header-note,.bt-eyebrow{letter-spacing:2.5px;font-size:10px;font-weight:700}.bt-header-note{color:var(--bt-text-muted)}.bt-header-action{min-height:44px;color:var(--bt-ink);background:var(--bt-canvas);cursor:pointer;border:0;border-radius:4px;justify-content:center;align-items:center;padding:8px 16px;font-size:13px;font-weight:600;line-height:1.4;text-decoration:none;display:flex}.bt-header-action:hover{background:var(--bt-surface-soft)}.bt-header-action:disabled{color:var(--bt-text-muted);cursor:wait}.bt-locale{align-items:center;display:flex}.bt-locale-option{min-width:32px;min-height:44px;color:var(--bt-text-muted);font:inherit;letter-spacing:1.5px;cursor:pointer;background:0 0;border:0;padding:0 4px;font-size:11px;font-weight:700}.bt-locale-option+.bt-locale-option:before{content:"/";color:var(--bt-line);margin-right:8px;font-weight:400;display:inline-block}.bt-locale-option:hover{color:var(--bt-ink)}.bt-locale-option[aria-current]{color:var(--bt-ink);text-underline-offset:5px;cursor:default;text-decoration:underline;text-decoration-thickness:1px}.bt-visually-hidden{clip:rect(0,0,0,0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}.bt-main{flex:1;grid-template-columns:1fr 1fr;align-items:center;gap:80px;width:100%;max-width:1120px;margin:auto;padding:56px 0 64px;display:grid}.bt-story{align-self:center}.bt-eyebrow{margin:0}.bt-art{aspect-ratio:500/390;justify-content:center;align-items:center;max-width:500px;margin:24px -24px 8px;display:flex;position:relative}.bt-art-chrysalis{object-fit:contain;width:76%;max-height:88%;display:block}.bt-art-butterfly{width:21%;height:auto;position:absolute;top:7%;right:12%}.bt-statement{letter-spacing:1.8px;margin:8px 0 16px;font-size:26px;font-weight:700;line-height:1.5}.bt-story-copy{color:var(--bt-text-muted);margin:0;font-size:14px;line-height:1.9}.bt-story-rule{background:var(--bt-ink);width:48px;height:1px;margin-top:32px;display:block}.bt-content{justify-self:end;width:100%;max-width:440px}.bt-kicker{color:var(--bt-text-muted);letter-spacing:2px;margin:0 0 12px;font-size:11px;font-weight:700}.bt-title{letter-spacing:1px;margin:0;font-family:Times New Roman,serif;font-size:48px;font-weight:400;line-height:1.15}.bt-intro{color:var(--bt-text-muted);margin:18px 0 32px;font-size:14px}.bt-title-rule{background:var(--bt-ink);width:48px;height:1px;margin:24px 0}.bt-form{gap:20px;display:grid}.bt-field{gap:8px;font-size:14px;font-weight:600;display:grid}.bt-input{border:1px solid var(--bt-line);background:var(--bt-canvas);width:100%;height:52px;color:var(--bt-ink);border-radius:2px;padding:12px 14px;font-size:16px;font-weight:400;transition:border-color .18s}.bt-input:hover{border-color:var(--bt-text-muted)}.bt-input:focus{border-color:var(--bt-ink)}.bt-help{color:var(--bt-text-muted);font-size:12px;font-weight:400;line-height:1.5}.bt-button{border:1px solid var(--bt-ink);color:#fff;background:var(--bt-ink);letter-spacing:.4px;cursor:pointer;border-radius:6px;justify-content:center;align-items:center;gap:12px;width:100%;min-height:52px;padding:12px 20px;font-size:14px;font-weight:600;line-height:1.5;text-decoration:none;transition:background .18s,color .18s;display:flex}.bt-button:hover{background:#25324d}.bt-button:disabled{cursor:wait;background:#556071;border-color:#556071}.bt-button-secondary{color:var(--bt-ink);background:#fff}.bt-button-secondary:hover{background:var(--bt-surface-soft)}.bt-error{color:var(--bt-danger);margin:0;font-size:14px}.bt-error:empty{display:none}.bt-form-bottom{text-align:center;color:var(--bt-text-muted);margin:28px 0 0;font-size:13px}.bt-form-bottom a{color:var(--bt-ink);font-weight:600}.bt-divider{color:var(--bt-text-muted);align-items:center;gap:16px;margin:24px 0;font-size:12px;display:flex}.bt-divider:before,.bt-divider:after{content:"";background:var(--bt-line);flex:1;height:1px}.bt-actions{gap:12px;margin-top:32px;display:grid}.bt-note{border-top:1px solid var(--bt-line);color:var(--bt-text-muted);margin:32px 0 0;padding:20px 0;font-size:13px}.bt-footer{border-top:1px solid var(--bt-line);color:var(--bt-text-muted);letter-spacing:1px;justify-content:space-between;align-items:center;gap:16px;padding:24px 0;font-size:10px;display:flex}.bt-footer-logo{width:96px;height:auto;display:block}:focus-visible{outline:2px solid var(--bt-ink);outline-offset:4px}@media (width<=1000px){.bt-frame{padding:0 32px}.bt-main{gap:40px}.bt-title{font-size:40px}}@media (width<=767px){.bt-frame{padding:0 24px}.bt-header{min-height:88px}.bt-header-note{display:none}.bt-main{max-width:440px;padding:40px 0 48px;display:block}.bt-story{display:none}.bt-content{max-width:none}.bt-title{font-size:36px}.bt-intro{margin-bottom:28px}.bt-footer{letter-spacing:.4px;font-size:9px}}@media (prefers-reduced-motion:reduce){*,:before,:after{transition:none!important;animation:none!important}}.bt-lines{white-space:pre-line}:lang(ja) :is(.bt-header-note,.bt-eyebrow,.bt-kicker),:lang(ja) .bt-statement{letter-spacing:1px}:lang(ja) .bt-title{letter-spacing:2px;font-family:inherit;line-height:1.4}