:root{--background:#fff;--foreground:#1a1a1a;--primary-color:#007bbb;--primary-hover:#005a8d;--primary-soft:rgba(0,123,187,.05);--accent-red:#d9001b;--accent-gray:#f2f4f7;--card-bg:#fff;--card-hover:#f9fbff;--surface-glass:hsla(0,0%,100%,.9);--border-color:#007bbb;--border-soft:#e1e8ed;--text-primary:#1a1a1a;--text-secondary:#536471;--text-on-primary:#fff;--soft-shadow:0 4px 20px rgba(0,0,0,.06);--accent-glow:0 4px 12px rgba(0,123,187,.2);--bg-primary:#fff;--bg-secondary:#f7f9f9;--twitter-blue:var(--primary-color);--twitter-border:var(--border-soft);--twitter-hover:rgba(0,123,187,.03);--transition-base:0.2s cubic-bezier(0.4,0,0.2,1);--main-content-max-width:700px;--container-max-width:1300px}@media (min-width:1024px){:root{--main-content-max-width:100%;--container-max-width:100%}}:root{--header-bg:hsla(0,0%,100%,.85);--twitter-header-bg:hsla(0,0%,100%,.85);--twitter-search-bg:#f7f9f9;--twitter-light-gray:#536471}*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;min-height:100vh;overflow-x:clip;background-color:var(--background);color:var(--foreground);font-family:var(--font-inter),"BIZ UDPGothic","Meiryo",sans-serif;-webkit-font-smoothing:antialiased;position:relative;width:100%}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-thumb{background:var(--border-soft);border-radius:10px}.policy-card{background:var(--card-bg);border:2px solid var(--primary-color);border-radius:8px;padding:24px;transition:var(--transition-base);box-shadow:var(--soft-shadow)}.policy-card:hover{transform:translateY(-2px);background:var(--card-hover)}input[type=email],input[type=number],input[type=password],input[type=text],select,textarea{width:100%;padding:12px 16px;border:2px solid var(--border-soft);border-radius:6px;background-color:var(--bg-primary);color:var(--text-primary);font-size:1rem;font-family:inherit;transition:border-color .2s,box-shadow .2s;outline:none}input:focus,select:focus,textarea:focus{border-color:var(--primary-color);box-shadow:0 0 0 4px var(--primary-soft)}.btn-solid{display:inline-flex;align-items:center;justify-content:center;background:var(--primary-color);color:#fff;padding:12px 24px;border:2px solid var(--primary-color);border-radius:6px;font-weight:800;text-align:center;transition:var(--transition-base);box-shadow:var(--accent-glow);cursor:pointer;gap:8px}.btn-solid:hover{background:var(--primary-hover);border-color:var(--primary-hover);transform:translateY(-2px);box-shadow:0 8px 20px rgba(0,123,187,.3)}.btn-solid:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}.btn-outline{display:inline-flex;align-items:center;justify-content:center;background:transparent;color:var(--primary-color);padding:12px 24px;border:2px solid var(--primary-color);border-radius:6px;font-weight:800;text-align:center;transition:var(--transition-base);cursor:pointer;gap:8px}.btn-outline:hover{background:var(--primary-soft);transform:translateY(-2px)}.handwriting{font-family:var(--font-kiwi-maru),cursive;color:var(--primary-color)}.safe-bottom{padding-bottom:env(safe-area-inset-bottom)}.safe-bottom-large{padding-bottom:calc(var(--footer-space, 96px) + env(safe-area-inset-bottom))}.fixed-footer-safe{padding-bottom:calc(12px + env(safe-area-inset-bottom))}.compact-thumbnail{position:relative;display:inline-block}.compact-thumbnail__button{border:none;background:transparent;padding:0;cursor:pointer}.compact-thumbnail__button,.compact-thumbnail__icon{display:inline-flex;align-items:center;justify-content:center;border-radius:8px}.compact-thumbnail__icon{width:100%;height:100%;background:rgba(0,0,0,.02)}.compact-thumbnail__expanded{position:relative;display:block}.compact-thumbnail__collapse{position:absolute;top:6px;right:6px;background:rgba(0,0,0,.5);color:#fff;border:none;width:28px;height:28px;border-radius:6px;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}