* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: #1E293B;
    line-height: 1.5;
    background-color: #FFFFFF;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Типография */
h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: 700;
    color: #0F172A;
}

.section-subtitle {
    font-size: 1.25rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #475569;
}

.text-accent {
    color: #2563EB;
}

/* Кнопки */
.btn {
    display: inline-block;
    background-color: #2563EB;
    color: white;
    font-weight: 600;
    text-decoration: none;
    border-radius: 12px;
    transition: all 0.2s ease;
    border: none;
    cursor: pointer;
    font-family: 'Inter', sans-serif;
    text-align: center;
}

.btn:hover {
    background-color: #1D4ED8;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(37, 99, 235, 0.4);
}

.btn--small {
    padding: 10px 20px;
    font-size: 1rem;
}

.btn--large {
    padding: 16px 32px;
    font-size: 1.125rem;
    width: auto;
}

.btn--block {
    display: block;
    width: 100%;
    padding: 14px;
    font-size: 1rem;
}

.btn--primary {
    background-color: #2563EB;
}

.btn--submit {
    width: 100%;
    margin-top: 1rem;
}

/* Шапка */
.header {
    padding: 20px 0;
    border-bottom: 1px solid #E2E8F0;
    background-color: white;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: #0F172A;
}

/* Hero секция */
.hero {
    padding: 80px 0 60px;
    background: linear-gradient(135deg, #F8FAFC 0%, #FFFFFF 100%);
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero__title {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: #0F172A;
}

.hero__subtitle {
    font-size: 1.25rem;
    color: #475569;
    margin-bottom: 2rem;
}

.hero__actions {
    margin-bottom: 1.5rem;
}

.hero__note {
    margin-top: 1rem;
    font-size: 0.95rem;
    color: #64748B;
}

.hero__messengers {
    display: flex;
    gap: 20px;
    font-size: 2rem;
    color: #2563EB;
}

.hero__img {
    max-width: 100%;
    border-radius: 24px;
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.15);
}

/* Проблемы */
.problems {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.problems__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin: 40px 0;
}

.problem-item {
    background: white;
    padding: 30px 20px;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 4px 6px -2px rgba(0,0,0,0.05);
    transition: all 0.2s;
}

.problem-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0,0,0,0.1);
}

.problem-icon {
    font-size: 2.5rem;
    color: #2563EB;
    margin-bottom: 1rem;
}

.problems__conclusion {
    text-align: center;
    font-size: 1.25rem;
    background: #2563EB;
    color: white;
    padding: 20px;
    border-radius: 60px;
    max-width: 800px;
    margin: 0 auto;
}

/* Решение */
.solution {
    padding: 80px 0;
}

.solution__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.solution-item {
    padding: 30px;
    border: 1px solid #E2E8F0;
    border-radius: 24px;
    transition: all 0.2s;
}

.solution-item:hover {
    border-color: #2563EB;
    box-shadow: 0 20px 30px -10px rgba(37, 99, 235, 0.1);
}

.solution-icon {
    font-size: 2.5rem;
    color: #2563EB;
    margin-bottom: 1.5rem;
}

.solution-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.solution-item p {
    color: #475569;
}

/* Кейсы */
.cases {
    padding: 80px 0;
    background-color: #0F172A;
    color: white;
}

.cases .section-title {
    color: white;
}

.cases .text-accent {
    color: #60A5FA;
}

.cases__grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    max-width: 900px;
    margin: 40px auto 0;
}

.case-item {
    display: flex;
    gap: 20px;
    background: rgba(255,255,255,0.05);
    padding: 30px;
    border-radius: 24px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

.case-icon {
    font-size: 2.5rem;
    color: #60A5FA;
    flex-shrink: 0;
}

.case-request {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: #F1F5F9;
}

.case-response {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.case-bad {
    color: #F87171;
    text-decoration: line-through 2px;
}

.case-good {
    color: #4ADE80;
    font-weight: 600;
}

/* Как работает */
.how-it-works {
    padding: 80px 0;
}

.steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
}

.step {
    flex: 1;
    min-width: 150px;
    text-align: center;
}

.step-number {
    width: 60px;
    height: 60px;
    background-color: #2563EB;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.step-text {
    font-weight: 500;
}

.step-arrow {
    font-size: 2rem;
    color: #2563EB;
}

/* Тарифы */
.pricing {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.pricing__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.pricing-card {
    background: white;
    border-radius: 32px;
    padding: 40px 30px;
    box-shadow: 0 4px 6px -2px rgba(0,0,0,0.05);
    transition: all 0.2s;
    position: relative;
    border: 1px solid #E2E8F0;
    display: flex;
    flex-direction: column;
}

.pricing-card--popular {
    border: 2px solid #2563EB;
    transform: scale(1.05);
    box-shadow: 0 25px 50px -12px rgba(37, 99, 235, 0.3);
    z-index: 2;
}

.pricing-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: #2563EB;
    color: white;
    padding: 6px 20px;
    border-radius: 40px;
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
}

.pricing-card__title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

.pricing-card__price {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0F172A;
    margin-bottom: 1.5rem;
}

.pricing-card__price span {
    font-size: 1rem;
    font-weight: 400;
    color: #64748B;
}

.pricing-card__features {
    list-style: none;
    margin-bottom: 2rem;
    flex-grow: 1;
}

.pricing-card__features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 10px;
    color: #475569;
}

.pricing-card__features i {
    color: #2563EB;
    font-size: 1rem;
}

.pricing-card__footer {
    margin-top: auto;
}

.pricing-card__label {
    display: block;
    text-align: center;
    color: #64748B;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

/* Качество */
.quality {
    padding: 80px 0;
}

.quality__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.quality-item {
    text-align: center;
    padding: 30px 20px;
    background: #F8FAFC;
    border-radius: 24px;
}

.quality-icon {
    font-size: 2.5rem;
    color: #2563EB;
    margin-bottom: 1rem;
}

.quality-item h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.quality-item p {
    color: #475569;
}

/* Форма */
.form-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #2563EB 0%, #1E40AF 100%);
    color: white;
}

.form-section .section-title,
.form-section .section-subtitle {
    color: white;
}

.form-container {
    max-width: 500px;
    margin: 40px auto 0;
    background: white;
    border-radius: 32px;
    padding: 40px;
    box-shadow: 0 30px 60px -15px rgba(0,0,0,0.3);
}

.lead-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 500;
    color: #1E293B;
    font-size: 0.95rem;
}

.form-group input,
.form-group select {
    padding: 14px 16px;
    border: 1.5px solid #E2E8F0;
    border-radius: 12px;
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    transition: all 0.2s;
    background-color: #F8FAFC;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: #2563EB;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    background-color: white;
}

.form-group--checkbox {
    flex-direction: row;
    align-items: center;
    gap: 12px;
}

.form-group--checkbox input {
    width: 20px;
    height: 20px;
    accent-color: #2563EB;
}

.form-group--checkbox label {
    margin-bottom: 0;
    font-size: 0.9rem;
    color: #475569;
}

.form-note {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: #64748B;
}

.form-success {
    text-align: center;
    padding: 30px 20px;
}

.form-success i {
    font-size: 4rem;
    color: #10B981;
    margin-bottom: 1rem;
}

.form-success h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #0F172A;
}

.form-success p {
    color: #475569;
}

.hidden {
    display: none;
}

/* FAQ */
.faq {
    padding: 80px 0;
    background-color: #F8FAFC;
}

.faq__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: 20px;
    box-shadow: 0 4px 6px -2px rgba(0,0,0,0.05);
}

.faq-question {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #0F172A;
    position: relative;
    padding-left: 25px;
}

.faq-question::before {
    content: "?";
    position: absolute;
    left: 0;
    color: #2563EB;
    font-weight: 700;
}

.faq-answer {
    color: #475569;
    line-height: 1.6;
    padding-left: 25px;
}

/* Подвал */
.footer {
    padding: 40px 0;
    background-color: #0F172A;
    color: white;
}

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer__logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

.footer__contacts {
    display: flex;
    gap: 20px;
}

.footer__contacts a {
    color: #94A3B8;
    font-size: 1.5rem;
    transition: color 0.2s;
}

.footer__contacts a:hover {
    color: #2563EB;
}

.footer__copy {
    color: #64748B;
    font-size: 0.9rem;
}

/* Адаптивность */
@media (max-width: 1024px) {
    .hero__title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .pricing-card--popular {
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero__messengers {
        justify-content: center;
    }
    
    .hero__image {
        order: -1;
    }
    
    .hero__img {
        max-width: 80%;
        margin: 0 auto;
        display: block;
    }
    
    .steps {
        flex-direction: column;
        align-items: stretch;
    }
    
    .step-arrow {
        transform: rotate(90deg);
        margin: 10px 0;
        text-align: center;
    }
    
    .case-item {
        flex-direction: column;
        text-align: center;
    }
    
    .case-icon {
        margin-bottom: 1rem;
    }
    
    .pricing__grid {
        gap: 20px;
    }
    
    .footer__content {
        flex-direction: column;
        text-align: center;
    }
    
    .faq__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 2rem;
    }
    
    .hero__subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .problem-item {
        padding: 20px 15px;
    }
    
    .solution-item {
        padding: 20px;
    }
    
    .solution-item h3 {
        font-size: 1.25rem;
    }
    
    .pricing-card {
        padding: 30px 20px;
    }
    
    .pricing-card__price {
        font-size: 2rem;
    }
    
    .form-container {
        padding: 25px 20px;
    }
    
    .faq-item {
        padding: 20px;
    }
}

/* Дополнительные стили для кнопок в карточках тарифов */
.pricing-card .btn--block {
    margin-top: 1rem;
}

/* Стили для активных состояний */
.btn:active {
    transform: translateY(0);
    box-shadow: 0 5px 15px -5px rgba(37, 99, 235, 0.4);
}

/* Стили для ссылок в тексте */
a {
    color: #2563EB;
    text-decoration: none;
    transition: color 0.2s;
}

a:hover {
    color: #1D4ED8;
    text-decoration: underline;
}

/* Утилиты */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

/* Анимации */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero, .problems, .solution, .cases, .how-it-works, .pricing, .quality, .form-section, .faq {
    animation: fadeIn 0.6s ease-out;
}

/* Стили для сообщений об ошибках валидации */
.error-message {
    color: #EF4444;
    font-size: 0.85rem;
    margin-top: 5px;
}

input.error, select.error {
    border-color: #EF4444 !important;
}

input.error:focus, select.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1) !important;
}

/* Стили для disabled состояния кнопки */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Стили для скроллбара (опционально) */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #F1F5F9;
}

::-webkit-scrollbar-thumb {
    background: #2563EB;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #1D4ED8;
}