.promo-hero-section {
    background: linear-gradient(180deg, #ffffff 0%, #f8fafc 100%);
    padding: 68px 0 64px;
    position: relative;
    overflow: hidden;
}

.promo-hero-section::before {
    content: "";
    position: absolute;
    width: 420px;
    height: 420px;
    top: -140px;
    right: -120px;
    background: radial-gradient(circle, rgba(255, 215, 130, 0.18) 0%, rgba(255,255,255,0) 72%);
    pointer-events: none;
    z-index: 0;
}

.promo-hero-section::after {
    content: "";
    position: absolute;
    width: 300px;
    height: 300px;
    bottom: -120px;
    left: -80px;
    background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, rgba(255,255,255,0) 75%);
    pointer-events: none;
    z-index: 0;
}

.promo-hero-grid {
    display: grid;
    grid-template-columns: 1.05fr 0.95fr;
    gap: 42px;
    align-items: start;
    position: relative;
    z-index: 1;
}

.promo-book-side {
    position: relative;
    z-index: 1;
    padding-top: 4px;
}

.section-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 14px;
    border-radius: 999px;
    background: #dbe7f8;
    color: #1d4ed8;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.promo-title {
    font-size: 56px;
    line-height: 1.02;
    font-weight: 800;
    color: #0f172a;
    margin: 18px 0 16px;
    max-width: 640px;
    letter-spacing: -0.03em;
}

.promo-subtitle {
    font-size: 18px;
    line-height: 1.75;
    color: #475467;
    max-width: 610px;
    margin-bottom: 24px;
}

.promo-book-showcase {
    position: relative;
    background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
    border-radius: 30px;
    padding: 28px;
    min-height: 430px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        0 30px 70px rgba(16, 24, 40, 0.10),
        0 8px 24px rgba(16, 24, 40, 0.05);
    border: 1px solid rgba(15, 23, 42, 0.06);
    overflow: hidden;
}

.promo-book-glow {
    position: absolute;
    width: 360px;
    height: 360px;
    background: radial-gradient(circle, rgba(255, 215, 130, 0.24) 0%, rgba(255,255,255,0) 72%);
    filter: blur(12px);
    z-index: 1;
}

.promo-book-sparkles::before,
.promo-book-sparkles::after {
    content: "";
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    z-index: 2;
    background: radial-gradient(circle, rgba(255,255,255,0.95) 0%, rgba(255,255,255,0) 75%);
}

.promo-book-sparkles::before {
    width: 180px;
    height: 180px;
    top: 10px;
    left: -20px;
    animation: promoFloat 5s ease-in-out infinite;
}

.promo-book-sparkles::after {
    width: 160px;
    height: 160px;
    bottom: 10px;
    right: -16px;
    animation: promoFloat 5s ease-in-out 1.4s infinite;
}

.promo-book-image {
    position: relative;
    z-index: 3;
    width: 310px;
    max-width: 100%;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 24px 36px rgba(15, 23, 42, 0.18));
    animation: promoBookFloat 4.4s ease-in-out infinite;
}

.promo-points {
    display: grid;
    gap: 12px;
    margin-top: 20px;
}

.promo-point {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: #344054;
    font-size: 15px;
    line-height: 1.6;
}

.promo-point span {
    color: #c9972d;
    font-weight: 800;
    margin-top: 1px;
    flex-shrink: 0;
}

.promo-form-side {
    position: relative;
    z-index: 2;
}

.promo-alert {
    margin-bottom: 18px;
    padding: 14px 16px;
    border-radius: 14px;
    font-size: 14px;
    line-height: 1.6;
    font-weight: 600;
}

.promo-alert.success {
    background: #ecfdf3;
    color: #027a48;
    border: 1px solid #abefc6;
}

.promo-alert.error {
    background: #fef3f2;
    color: #b42318;
    border: 1px solid #fecdca;
}

.promo-form-card {
    background: #ffffff;
    border-radius: 28px;
    padding: 30px;
    box-shadow:
        0 26px 70px rgba(16, 24, 40, 0.10),
        0 8px 22px rgba(16, 24, 40, 0.05);
    border: 1px solid rgba(15, 23, 42, 0.06);
}

.promo-form-kicker {
    display: inline-block;
    margin-bottom: 10px;
    font-size: 12px;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #c05621;
}

.promo-form-card h2 {
    font-size: 29px;
    line-height: 1.12;
    color: #0f172a;
    margin-bottom: 10px;
    letter-spacing: -0.02em;
}

.promo-form-copy {
    color: #667085;
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.promo-form {
    margin-top: 4px;
}

.promo-form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 16px;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: #344054;
    margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    border: 1px solid #d0d5dd;
    border-radius: 14px;
    background: #ffffff;
    padding: 14px 16px;
    font-size: 15px;
    font-family: 'Inter', sans-serif;
    color: #101828;
    transition: all 0.25s ease;
    outline: none;
    box-sizing: border-box;
}

.form-group textarea {
    min-height: 110px;
    resize: vertical;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #98a2b3;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
}

.promo-submit-btn {
    width: 100%;
    border: none;
    border-radius: 16px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: #ffffff;
    padding: 16px 18px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease;
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.22);
}

.promo-submit-btn:hover {
    transform: translateY(-2px);
}

.promo-submit-btn.is-loading,
.promo-submit-btn:disabled {
    opacity: 0.75;
    pointer-events: none;
}

.promo-form-note {
    font-size: 13px;
    line-height: 1.7;
    color: #667085;
    margin-top: 14px;
    text-align: center;
}

@keyframes promoBookFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@keyframes promoFloat {
    0%, 100% {
        transform: scale(1) translateY(0);
        opacity: 0.7;
    }
    50% {
        transform: scale(1.08) translateY(-8px);
        opacity: 1;
    }
}

@media (max-width: 1100px) {
    .promo-title {
        font-size: 48px;
    }

    .promo-hero-grid {
        gap: 32px;
    }

    .promo-book-showcase {
        min-height: 390px;
    }

    .promo-book-image {
        width: 280px;
    }
}

@media (max-width: 991px) {
    .promo-hero-section {
        padding: 42px 0 50px;
    }

    .promo-hero-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .promo-book-side {
        padding-top: 0;
    }

    .promo-title {
        font-size: 42px;
        max-width: 100%;
        margin: 16px 0 12px;
    }

    .promo-subtitle {
        font-size: 16px;
        max-width: 100%;
        margin-bottom: 18px;
    }

    .promo-book-showcase {
        min-height: 320px;
        padding: 24px;
        border-radius: 24px;
    }

    .promo-book-image {
        width: 240px;
    }

    .promo-points {
        margin-top: 16px;
    }

    .promo-form-card {
        padding: 24px;
        border-radius: 24px;
    }

    .promo-form-card h2 {
        font-size: 26px;
    }
}

@media (max-width: 640px) {
    .promo-hero-section {
        padding: 22px 0 40px;
    }

    .promo-hero-grid {
        gap: 22px;
    }

    .section-badge {
        font-size: 11px;
        padding: 8px 12px;
    }

    .promo-title {
        font-size: 34px;
        line-height: 1.08;
        margin: 14px 0 10px;
    }

    .promo-subtitle {
        font-size: 15px;
        line-height: 1.65;
        margin-bottom: 16px;
    }

    .promo-book-showcase {
        padding: 16px;
        min-height: 250px;
        border-radius: 20px;
    }

    .promo-book-glow {
        width: 240px;
        height: 240px;
    }

    .promo-book-image {
        width: 180px;
    }

    .promo-book-sparkles::before {
        width: 110px;
        height: 110px;
        top: 6px;
        left: -12px;
    }

    .promo-book-sparkles::after {
        width: 95px;
        height: 95px;
        bottom: 8px;
        right: -10px;
    }

    .promo-points {
        gap: 10px;
        margin-top: 14px;
    }

    .promo-point {
        font-size: 14px;
        line-height: 1.55;
    }

    .promo-form-card {
        padding: 20px 16px;
        border-radius: 20px;
    }

    .promo-form-kicker {
        font-size: 11px;
        margin-bottom: 8px;
    }

    .promo-form-card h2 {
        font-size: 24px;
        line-height: 1.14;
        margin-bottom: 8px;
    }

    .promo-form-copy {
        font-size: 14px;
        line-height: 1.6;
        margin-bottom: 16px;
    }

    .promo-form-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .form-group {
        margin-bottom: 14px;
    }

    .form-group label {
        font-size: 13px;
        margin-bottom: 6px;
    }

    .form-group input,
    .form-group textarea {
        padding: 12px 14px;
        font-size: 14px;
        border-radius: 12px;
    }

    .form-group textarea {
        min-height: 96px;
    }

    .promo-submit-btn {
        padding: 14px 16px;
        font-size: 15px;
        border-radius: 14px;
    }

    .promo-form-note {
        font-size: 12px;
        line-height: 1.6;
        margin-top: 12px;
    }
}