:root {
            --banoo-orange: #fc8550;
            --banoo-blue: #1d4052;
            --banoo-bg: #fffaf6;
        }
        body {
            margin: 0;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
            background: var(--banoo-bg);
            color: var(--banoo-blue);
        }
        .banoo-rechner {
            max-width: 800px;
            margin: 0 auto;
            padding: 1rem 1.25rem 2rem;
        }
        .banoo-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 1rem;
        }
        .banoo-ghost {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--banoo-orange);
            position: relative;
            flex-shrink: 0;
        }
        .banoo-ghost::before,
        .banoo-ghost::after {
            content: "";
            position: absolute;
            top: 22px;
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: #fff;
        }
        .banoo-ghost::before { left: 16px; }
        .banoo-ghost::after { right: 16px; }

        .banoo-title {
            font-size: 1.4rem;
            font-weight: 700;
        }
        .banoo-subtitle {
            font-size: .95rem;
            opacity: .8;
        }

        .banoo-card {
            background: #fff;
            border-radius: 1.25rem;
            box-shadow: 0 6px 18px rgba(0, 0, 0, .08);
            padding: 1.25rem;
        }

        .banoo-status {
            display: flex;
            justify-content: space-between;
            font-size: .95rem;
            margin-bottom: .75rem;
        }
        .banoo-badge {
            background: rgba(252, 133, 80, .12);
            color: var(--banoo-orange);
            padding: .2rem .65rem;
            border-radius: 999px;
            font-size: .8rem;
            font-weight: 600;
        }

        .banoo-question {
            text-align: center;
            margin: 1rem 0 1.25rem;
        }
        .banoo-question-main {
            font-size: 2.6rem;
            font-weight: 700;
            letter-spacing: .04em;
        }
        .banoo-question-main span {
            display: inline-block;
            min-width: 1.5ch;
        }

        .banoo-input-wrapper {
            margin-top: 1rem;
            display: flex;
            justify-content: center;
        }
        .banoo-answer {
            font-size: 2.2rem;
            width: 5ch;
            text-align: center;
            padding: .3rem .4rem;
            border-radius: .75rem;
            border: 3px solid var(--banoo-blue);
            background: #fff;
            outline: none;
        }
        .banoo-answer:focus-visible {
            box-shadow: 0 0 0 3px rgba(252,133,80,.35);
        }

        .banoo-keyboard {
            margin-top: 1.5rem;
            display: grid;
            grid-template-columns: repeat(5, minmax(0, 1fr));
            gap: .5rem;
        }
        .banoo-key {
            font-size: 1.6rem;
            padding: .6rem 0;
            border-radius: .9rem;
            border: none;
            background: #ffe0d0;
            color: var(--banoo-blue);
            font-weight: 600;
            cursor: pointer;
        }
        .banoo-key.action {
            font-size: 1rem;
            text-transform: uppercase;
            letter-spacing: .04em;
            background: var(--banoo-blue);
            color: #fff;
        }
        .banoo-key.wide {
            grid-column: span 2;
        }

        .banoo-feedback {
            margin-top: 1rem;
            min-height: 2.5rem;
            font-size: 1rem;
        }
        .banoo-feedback-text {
            padding: .75rem 1rem;
            border-radius: .9rem;
            background: rgba(29,64,82,.04);
        }
        .banoo-feedback-text.ok {
            border-left: 4px solid var(--banoo-orange);
        }
        .banoo-feedback-text.error {
            border-left: 4px solid #d9534f;
        }

        .banoo-footer {
            margin-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: .9rem;
            opacity: .8;
        }
        .banoo-progress-bar {
            position: relative;
            flex: 1;
            height: 8px;
            border-radius: 999px;
            background: rgba(29,64,82,.08);
            margin-left: .75rem;
            overflow: hidden;
        }
        .banoo-progress-fill {
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            width: 0%;
            background: var(--banoo-orange);
            transition: width .25s ease-out;
        }

        .banoo-summary {
            text-align: center;
            padding: 1.5rem 1rem;
        }
        .banoo-summary h2 {
            font-size: 1.7rem;
            margin-bottom: .5rem;
        }
        .banoo-summary-points {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--banoo-orange);
            margin: .2rem 0 .8rem;
        }
        .banoo-summary-note {
            font-size: .95rem;
            max-width: 28rem;
            margin: 0 auto 1.2rem;
        }
        .banoo-summary-actions {
            display: flex;
            justify-content: center;
            gap: .75rem;
            flex-wrap: wrap;
        }
        .banoo-btn {
            border: none;
            border-radius: 999px;
            padding: .65rem 1.3rem;
            font-size: .95rem;
            font-weight: 600;
            cursor: pointer;
        }
        .banoo-btn-primary {
            background: var(--banoo-orange);
            color: #fff;
        }
        .banoo-btn-secondary {
            background: transparent;
            color: var(--banoo-blue);
            border: 1px solid rgba(29,64,82,.25);
        }

        @media (max-width: 600px) {
            .banoo-rechner {
                padding: .75rem .75rem 1.5rem;
            }
            .banoo-question-main {
                font-size: 2.2rem;
            }
            .banoo-answer {
                font-size: 2rem;
                width: 6ch;
            }
            .banoo-keyboard {
                grid-template-columns: repeat(4, minmax(0, 1fr));
            }
        }