.on-adv {
    max-width: 1200px;
    margin: 0 auto;
    padding: 36px 20px 60px;
}

.on-adv__hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.05fr) minmax(320px, .95fr);
    align-items: center;
    gap: 34px;
    overflow: hidden;
    margin-bottom: 54px;
    padding: 52px;
    border: 1px solid #eee;
    border-radius: 8px;
    background:
        radial-gradient(circle at 85% 20%, rgba(255, 88, 64, .08), transparent 32%),
        linear-gradient(135deg, #fff 0%, #fff 58%, #fafafa 100%);
}

.on-adv__hero-content {
    max-width: 720px;
}

.on-adv__hero-visual {
    position: relative;
    min-width: 0;
}

.on-adv__hero-visual img {
    display: block;
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.on-adv__hero h1 {
    margin: 0 0 18px;
    font-size: 42px;
    line-height: 1.08;
    letter-spacing: -0.02em;
}

.on-adv__lead {
    max-width: 660px;
    margin: 0;
    color: #555;
    font-size: 18px;
    line-height: 1.6;
}

.on-adv__benefits {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 34px;
}

.on-adv__benefits div {
    padding: 14px 0;
}

.on-adv__benefits strong,
.on-adv__benefits span {
    display: block;
}

.on-adv__benefits strong {
    margin-bottom: 3px;
    font-size: 18px;
    line-height: 1.2;
}

.on-adv__benefits span {
    color: #777;
    font-size: 13px;
    line-height: 1.4;
}

.on-adv__hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 30px;
}

.on-adv__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 0 18px;
    border: 1px solid #ddd;
    border-radius: 4px;
    color: #222;
    background: #fff;
    font-weight: 600;
    text-decoration: none;
}

.on-adv__btn:hover {
    border-color: #aaa;
    color: #222;
    text-decoration: none;
}

.on-adv__btn--primary {
    border-color: #f0523d;
    color: #fff;
    background: #f0523d;
}

.on-adv__btn--primary:hover {
    border-color: #d94331;
    color: #fff;
    background: #d94331;
}

.on-adv__section {
    margin-bottom: 54px;
}

.on-adv__section > h2,
.on-adv__audience > h2 {
    margin: 0 0 24px;
    font-size: 30px;
    line-height: 1.2;
    text-align: center;
}

.on-adv__cards {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.on-adv-card {
    display: flex;
    flex-direction: column;
    min-width: 0;
    padding: 24px;
    border: 1px solid #e4e4e4;
    border-radius: 6px;
    background: #fff;
}

.on-adv-card h3 {
    margin: 0 0 16px;
    font-size: 19px;
    line-height: 1.3;
}

.on-adv-card p {
    margin: 0 0 16px;
    color: #555;
    line-height: 1.6;
}

.on-adv-card ul {
    margin: 0 0 22px;
    padding-left: 19px;
}

.on-adv-card li {
    margin-bottom: 8px;
    line-height: 1.45;
}

.on-adv-card li a {
    color: #333;
    font-weight: 600;
    text-decoration: none;
    border-bottom: 1px solid #ddd;
    transition: color .2s ease, border-color .2s ease;
}

.on-adv-card li a:hover {
    color: #f0523d;
    border-bottom-color: #f0523d;
}

.on-adv-card__price {
    margin-top: auto;
    padding-top: 18px;
}

.on-adv-card__price small,
.on-adv-card__price strong,
.on-adv-card__price span {
    display: block;
}

.on-adv-card__price small {
    margin-bottom: 4px;
    color: #888;
    font-size: 12px;
}

.on-adv-card__price strong {
    color: #f0523d;
    font-size: 24px;
    line-height: 1.2;
}

.on-adv-card__price span {
    margin-top: 4px;
    color: #777;
    font-size: 13px;
}

.on-adv-card__extra {
    margin-top: 12px;
    padding: 12px;
    border-radius: 4px;
    background: #faf7f6;
    font-size: 13px;
    line-height: 1.4;
}

.on-adv-card__extra strong {
    display: block;
    margin-top: 4px;
    color: #f0523d;
    font-size: 18px;
}

.on-adv-card__extra--sensitive {
    background: #fff8e6;
}

.on-adv__audience {
    margin-bottom: 54px;
    padding: 30px;
    border: 1px solid #eee;
    border-radius: 6px;
    background: #fafafa;
}

.on-adv__stats {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.on-adv__stats div {
    text-align: center;
}

.on-adv__stats strong,
.on-adv__stats span {
    display: block;
}

.on-adv__stats strong {
    margin-bottom: 6px;
    font-size: 22px;
    line-height: 1.2;
}

.on-adv__stats span {
    color: #777;
    font-size: 13px;
    line-height: 1.4;
}

.on-adv__bottom {
    display: grid;
    grid-template-columns: minmax(260px, .8fr) minmax(0, 2fr);
    gap: 24px;
}

.on-adv__contacts,
.on-adv__order {
    padding: 26px;
    border: 1px solid #e4e4e4;
    border-radius: 6px;
    background: #fff;
}

.on-adv__contacts h2,
.on-adv__order h2 {
    margin: 0 0 18px;
    font-size: 24px;
    line-height: 1.2;
}

.on-adv__contacts p,
.on-adv__order p {
    margin: 0 0 18px;
    line-height: 1.55;
}

.on-adv__contacts a {
    color: #f0523d;
    text-decoration: none;
}

.on-adv__contacts a:hover {
    text-decoration: underline;
}

@media (max-width: 1050px) {
    .on-adv__cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .on-adv__benefits,
    .on-adv__stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .on-adv {
        padding: 24px 16px 44px;
    }

    .on-adv__hero {
        padding: 30px 22px;
        grid-template-columns: 1fr;
        gap: 28px;
        margin-bottom: 40px;
    }

.on-adv__hero-visual {
    max-width: 520px;
    margin: 0 auto;
}

    .on-adv__hero h1 {
        font-size: 32px;
    }

    .on-adv__lead {
        font-size: 16px;
    }

    .on-adv__bottom {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {
    .on-adv__cards,
    .on-adv__benefits,
    .on-adv__stats {
        grid-template-columns: 1fr;
    }

    .on-adv__section > h2,
    .on-adv__audience > h2 {
        font-size: 25px;
        text-align: left;
    }

    .on-adv__hero-actions {
        flex-direction: column;
    }

    .on-adv__btn {
        width: 100%;
    }
}

.on-adv-form {
    margin-top: 24px;
}

.on-adv-form__row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 18px;
}

.on-adv-form__field {
    margin-bottom: 18px;
}

.on-adv-form__row .on-adv-form__field {
    margin-bottom: 0;
}

.on-adv-form__field label {
    display: block;
    margin-bottom: 7px;
    font-size: 14px;
    font-weight: 600;
    color: #222;
}

.on-adv-form input[type="text"],
.on-adv-form input[type="email"],
.on-adv-form select,
.on-adv-form textarea {
    width: 100%;
    box-sizing: border-box;
    padding: 12px 14px;
    border: 1px solid #d8d8d8;
    border-radius: 5px;
    background: #fff;
    color: #222;
    font: inherit;
    line-height: 1.4;
    transition: border-color .2s ease, box-shadow .2s ease;
}

.on-adv-form input[type="text"],
.on-adv-form input[type="email"],
.on-adv-form select {
    min-height: 46px;
}

.on-adv-form textarea {
    min-height: 130px;
    resize: vertical;
}

.on-adv-form input:focus,
.on-adv-form select:focus,
.on-adv-form textarea:focus {
    outline: none;
    border-color: #999;
    box-shadow: 0 0 0 2px rgba(0, 0, 0, .04);
}

.on-adv-form .on-adv__btn {
    border: 0;
    cursor: pointer;
    font: inherit;
}

.on-adv-form__privacy {
    margin: 13px 0 0;
    font-size: 12px;
    line-height: 1.5;
    color: #777;
}

.on-adv-form__notice {
    margin: 18px 0 22px;
    padding: 13px 15px;
    border-radius: 5px;
    font-size: 14px;
    line-height: 1.5;
}

.on-adv-form__notice--success {
    border: 1px solid #b9dfc5;
    background: #f3fbf5;
}

.on-adv-form__notice--error {
    border: 1px solid #e5c1c1;
    background: #fff6f6;
}

.on-adv-form__hp {
    position: absolute !important;
    left: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
}

@media (max-width: 760px) {
    .on-adv-form__row {
        grid-template-columns: 1fr;
        gap: 16px;
        margin-bottom: 16px;
    }

    .on-adv-form__row .on-adv-form__field {
        margin-bottom: 0;
    }

    .on-adv-form__field {
        margin-bottom: 16px;
    }
}