.ac-card {
        max-width: 720px;
        margin: 0 auto;
        padding: 2rem 1.5rem;
        background: var(--bg-primary, #fff);
        border: 1px solid var(--border-color, #e5e5e5);
        border-radius: 16px;
        box-shadow: 0 8px 32px rgba(0,0,0,.06);
        text-align: center;
        --ac-accent: #0ea5e9;
        animation: ac-card-in 600ms cubic-bezier(.2,.7,.2,1);
        transition: box-shadow 200ms ease;
    }
    .ac-card.is-running {
        box-shadow: 0 8px 32px rgba(14,165,233,.18), 0 0 0 1px rgba(14,165,233,.15);
    }
    @keyframes ac-card-in {
        from { opacity: 0; transform: translateY(12px) scale(.985); }
        to   { opacity: 1; transform: translateY(0)    scale(1); }
    }
    .ac-label {
        font-size: 1rem;
        text-transform: uppercase;
        letter-spacing: .08em;
        color: var(--muted, #666);
        margin-bottom: .5rem;
        min-height: 1.25rem;
    }
    .ac-value-row {
        display: flex;
        align-items: baseline;
        justify-content: center;
        gap: .25rem;
        font-family: 'Inter', system-ui, sans-serif;
        font-variant-numeric: tabular-nums;
        font-weight: 800;
        line-height: 1;
        margin: .5rem 0 1.5rem;
    }
    .ac-value {
        font-size: clamp(3rem, 14vw, 7rem);
        color: var(--ac-accent);
        word-break: break-all;
        transition: color 250ms ease, text-shadow 250ms ease, transform 120ms ease-out;
        display: inline-block;
    }
    .ac-card.is-running .ac-value {
        text-shadow: 0 0 32px rgba(14,165,233,.28);
    }
    .ac-value.is-pulsing {
        animation: ac-value-pulse 240ms ease-out;
    }
    @keyframes ac-value-pulse {
        0%   { transform: scale(1);    }
        40%  { transform: scale(1.04); }
        100% { transform: scale(1);    }
    }
    @media (prefers-reduced-motion: reduce) {
        .ac-card { animation: none; }
        .ac-value, .ac-card { transition: none; }
        .ac-value.is-pulsing { animation: none; }
    }
    .ac-affix {
        font-size: clamp(1.5rem, 5vw, 2.5rem);
        color: var(--text-primary, #222);
        font-weight: 600;
    }
    .ac-meta {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem 1.5rem;
        font-size: .9rem;
        color: var(--muted, #666);
        margin-bottom: 1.25rem;
    }
    .ac-meta span strong { color: var(--text-primary, #222); font-weight: 600; }
    .ac-controls {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: .75rem;
        margin-bottom: 1rem;
    }
    .ac-btn {
        font-family: inherit;
        font-size: 1rem;
        font-weight: 600;
        padding: .65rem 1.25rem;
        border-radius: 10px;
        border: 1px solid var(--border-color, #ddd);
        background: var(--bg-primary, #fff);
        color: var(--text-primary, #222);
        cursor: pointer;
        transition: background .12s, transform .08s;
    }
    .ac-btn:hover { background: var(--bg-secondary, #f5f5f5); }
    .ac-btn:active { transform: translateY(1px); }
    .ac-btn-primary {
        background: var(--ac-accent);
        color: #fff;
        border-color: var(--ac-accent);
    }
    .ac-btn-primary:hover { background: #0284c7; }
    .ac-tools {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: .5rem;
        margin-top: 1rem;
    }
    .ac-link-text {
        font-size: .875rem;
        color: var(--muted, #666);
        margin-top: .5rem;
        word-break: break-all;
    }
    .ac-link-text a { color: var(--ac-accent); text-decoration: underline; }
    .ac-settings {
        display: none;
        text-align: left;
        padding-top: 1.5rem;
        border-top: 1px dashed var(--border-color, #e5e5e5);
        margin-top: 1.5rem;
    }
    .ac-settings.is-open { display: block; }
    .ac-settings-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
        gap: .75rem;
    }
    .ac-settings-field { display: flex; flex-direction: column; gap: .25rem; }
    .ac-settings-field label {
        font-size: .8rem;
        font-weight: 600;
        color: var(--muted, #666);
        text-transform: uppercase;
        letter-spacing: .04em;
    }
    .ac-settings-field input,
    .ac-settings-field select {
        font: inherit;
        padding: .5rem .65rem;
        border: 1px solid var(--border-color, #ddd);
        border-radius: 8px;
        background: var(--bg-primary, #fff);
        color: var(--text-primary, #222);
    }
    .ac-flash { animation: ac-flash 600ms ease-out; }
    @keyframes ac-flash {
        0%   { box-shadow: 0 0 0 0 rgba(14,165,233,.55); }
        100% { box-shadow: 0 0 0 32px rgba(14,165,233,0); }
    }
    /* Pro-branded button (fullscreen / customize entry + upgrade CTA) */
    .ac-btn-pro {
        border-color: #2ba8ff;
        color: #2ba8ff;
    }
    .ac-btn-pro:hover { background: rgba(43,168,255,.08); }
    .ac-btn-pro .fa-crown { color: #2ba8ff; }
    .ac-btn-upgrade {
        background: #2ba8ff;
        color: #fff;
        border-color: #2ba8ff;
    }
    .ac-btn-upgrade:hover { background: #1f8fe0; color: #fff; }
    .ac-btn-upgrade .fa-crown { color: #fff; }
    /* Upgrade strip at the bottom of the customize panel */
    .ac-upgrade-strip {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        justify-content: space-between;
        gap: .75rem;
        margin-top: 1.25rem;
        padding: .9rem 1rem;
        border: 1px solid rgba(43,168,255,.35);
        border-radius: 12px;
        background: rgba(43,168,255,.06);
        text-align: left;
    }
    .ac-upgrade-strip__text {
        font-size: .9rem;
        color: var(--text-primary, #222);
        display: flex;
        align-items: center;
        gap: .5rem;
    }
    .ac-upgrade-strip__text .fa-crown { color: #2ba8ff; }
    /* Fullscreen presentation mode */
    .ac-card.is-fullscreen {
        max-width: none;
        width: 100%;
        height: 100%;
        margin: 0;
        border: none;
        border-radius: 0;
        box-shadow: none;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
    }
    .ac-card.is-fullscreen .ac-value {
        font-size: clamp(4rem, 22vw, 16rem);
    }
    .ac-card.is-fullscreen .ac-affix {
        font-size: clamp(2rem, 8vw, 5rem);
    }
    .ac-card.is-fullscreen .ac-label {
        font-size: 1.4rem;
    }
    .ac-card.is-fullscreen .ac-settings { display: none !important; }
    .ac-fs-exit {
        display: none;
        position: fixed;
        top: 1rem;
        right: 1rem;
        z-index: 10;
        font-size: .95rem;
    }
    .ac-card.is-fullscreen .ac-fs-exit { display: inline-flex; align-items: center; gap: .4rem; }
    .ac-content {
        max-width: 780px;
        margin: 3rem auto 0;
        padding: 0 1.5rem;
        color: var(--text-secondary, #444);
    }
    .ac-content h2 {
        font-family: 'Fraunces', Georgia, serif;
        font-size: 1.75rem;
        margin: 2rem 0 .75rem;
    }
    .ac-content p { line-height: 1.6; margin-bottom: 1rem; }
    .ac-content ul { line-height: 1.7; padding-left: 1.25rem; }

/* ---- migrated from inline style="" attributes (pilot: zero inline CSS) ---- */
.auto-counter-hero { padding: 2rem 0 4rem; }
.ac-hero-head { text-align: center; max-width: 720px; margin: 0 auto 2rem; padding: 0 1.5rem; }
.ac-hero-title { font-family: 'Fraunces', Georgia, serif; font-size: clamp(2rem, 5vw, 3rem); margin: 0 0 .5rem; }
.ac-hero-sub { color: var(--muted, #666); font-size: 1.05rem; line-height: 1.5; margin: 0; }
.ac-example-list { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: .9rem; }
.ac-copy-btn { padding: .3rem .7rem; font-size: .85rem; }