.funclass-install-guide { width: min(480px, calc(100vw - 48px)); box-sizing: border-box; max-height: 85vh; overflow: auto; border: 1px solid #d8e0ec; border-radius: 20px; padding: 28px; color: #182d49; background: #fff; font-family: system-ui, sans-serif; box-shadow: 0 16px 70px #071a3d40; }
.funclass-install-guide::backdrop { background: #071a3d70; }
.funclass-install-guide h2 { font-size: 1.3rem; margin: 0 0 18px; }
.funclass-install-guide p { line-height: 1.75; }
.funclass-install-guide button { border: 0; border-radius: 10px; background: #09234b; color: #fff; padding: 12px 20px; cursor: pointer; font: inherit; }
.funclass-install-guide button:focus-visible { outline: 3px solid #26a6bd; outline-offset: 3px; }