.tracking-page {
        width: 100%;
        max-width: 700px;
        margin: 0 auto;
    }

    .tracking-heading {
        margin-bottom: 1.5rem;
    }

    .tracking-eyebrow {
        display: inline-flex;
        align-items: center;
        gap: .45rem;
        margin-bottom: .55rem;
        color: var(--security, #0f766e);
        font-size: .76rem;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: .08em;
    }

    .tracking-eyebrow::before {
        content: "";
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: #16a34a;
        box-shadow: 0 0 0 4px rgba(22, 163, 74, .10);
    }

    .tracking-heading h1 {
        margin-bottom: .7rem;
        font-size: clamp(1.8rem, 4vw, 2.35rem);
        line-height: 1.12;
        letter-spacing: -.035em;
    }

    .tracking-intro {
        max-width: 62ch;
        color: var(--muted);
        font-size: .96rem;
        line-height: 1.65;
    }

    .tracking-card {
        width: 100%;
        padding: clamp(1.35rem, 4vw, 2rem);
        border: 1px solid var(--border);
        border-radius: 18px;
        background: var(--card);
        box-shadow: var(--shadow);
    }

    .tracking-card-header {
        display: flex;
        align-items: center;
        gap: .85rem;
        margin-bottom: 1.45rem;
        padding-bottom: 1.2rem;
        border-bottom: 1px solid var(--border);
    }

    .tracking-icon {
        width: 44px;
        height: 44px;
        flex: 0 0 44px;
        display: grid;
        place-items: center;
        border-radius: 12px;
        background: var(--primary-soft);
        color: var(--primary);
        font-size: 1.1rem;
        font-weight: 900;
    }

    .tracking-card-header h2 {
        margin: 0;
        font-size: 1rem;
    }

    .tracking-card-header p {
        margin-top: .2rem;
        color: var(--muted);
        font-size: .78rem;
    }

    .tracking-form-group {
        margin-bottom: 1.25rem;
    }

    .tracking-form-group label {
        display: block;
        margin-bottom: .45rem;
        color: var(--text);
        font-size: .88rem;
        font-weight: 750;
    }

    .required {
        color: #dc2626;
    }

    .tracking-input {
        width: 100%;
        min-height: 48px;
        padding: .72rem .9rem;
        border: 1px solid #cbd5e1;
        border-radius: 10px;
        background: #fff;
        color: var(--text);
        font: inherit;
        transition: border-color .15s ease, box-shadow .15s ease;
    }

    .tracking-input::placeholder {
        color: #9ca3af;
    }

    .tracking-input:hover {
        border-color: #94a3b8;
    }

    .tracking-input:focus {
        outline: none;
        border-color: var(--primary);
        box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
    }

    .tracking-hint {
        display: block;
        margin-top: .35rem;
        color: var(--muted);
        font-size: .76rem;
        line-height: 1.5;
    }

    .tracking-number {
        font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
        letter-spacing: .03em;
    }

    .tracking-security {
        display: flex;
        align-items: flex-start;
        gap: .7rem;
        margin: 1.35rem 0;
        padding: .9rem 1rem;
        border: 1px solid #bfdbfe;
        border-radius: 11px;
        background: var(--primary-soft);
        color: #1e40af;
        font-size: .82rem;
        line-height: 1.5;
    }

    .tracking-security-icon {
        width: 22px;
        height: 22px;
        flex: 0 0 22px;
        display: grid;
        place-items: center;
        border-radius: 50%;
        background: #dbeafe;
        color: var(--primary);
        font-size: .72rem;
        font-weight: 900;
    }

    .tracking-actions {
        margin-top: 1.4rem;
    }

    .tracking-submit {
        width: 100%;
        min-height: 48px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: .8rem 1.2rem;
        border: 0;
        border-radius: 10px;
        background: var(--primary);
        color: #fff;
        font: inherit;
        font-size: .86rem;
        font-weight: 800;
        cursor: pointer;
        box-shadow: 0 8px 18px rgba(37, 99, 235, .18);
        transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
        -webkit-appearance: none;
        appearance: none;
    }

    /*
     * Priorité volontairement supérieure aux règles génériques
     * du layout du type button[type="submit"]:hover.
     * Le bouton reste bleu au survol.
     */
    .tracking-card button.tracking-submit:hover {
        background: var(--primary-dark) !important;
        color: #fff !important;
        border-color: var(--primary-dark) !important;
        transform: translateY(-1px);
        box-shadow: 0 10px 22px rgba(37, 99, 235, .23);
    }

    .tracking-card button.tracking-submit:active {
        background: var(--primary-dark) !important;
        color: #fff !important;
        transform: translateY(0);
    }

    .tracking-card button.tracking-submit:focus,
    .tracking-card button.tracking-submit:focus-visible {
        background: var(--primary) !important;
        color: #fff !important;
        outline: 3px solid rgba(37, 99, 235, .18);
        outline-offset: 2px;
    }

    .tracking-note {
        margin-top: 1rem;
        text-align: center;
        color: var(--muted);
        font-size: .74rem;
        line-height: 1.5;
    }

    @media (max-width: 640px) {
        .tracking-card {
            padding: 1.15rem;
            border-radius: 14px;
        }
    }