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

body {
    font-family: Inter, sans-serif;
    color: #111;
    background: #f8f9fc;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    padding: 25px 0;
}

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

.menu {
    display: flex;
    gap: 30px;
}

.menu a {
    text-decoration: none;
    color: #444;
}

.header-buttons {
    display: flex;
    gap: 12px;
}

.btn {
    display: inline-flex;
    justify-content: center;
    align-items: center;

    height: 52px;

    padding: 0 28px;

    border-radius: 12px;

    background: #0f63f3;

    color: white;

    text-decoration: none;

    border: none;

    cursor: pointer;
}

.btn-light {
    background: #5eb4ff;
}

.hero {
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 64px;
    line-height: 1.1;
}

.subtitle {
    margin-top: 24px;
    color: #666;
}

.calculator {
    margin: 40px auto 0;
    max-width: 700px;
}

.calc-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.field {
    flex: 1;
}

.field label {
    display: block;
    margin-bottom: 8px;
}

.field input,
.field select {
    width: 100%;
    height: 58px;

    border: 1px solid #e4e8ef;

    border-radius: 14px;

    padding: 0 16px;

    background: white;
}

.calc-btn {
    width: 100%;
}

.advantages {
    padding: 100px 0;
}

.adv-grid {
    display: grid;
    grid-template-columns: repeat(2,1fr);
    gap: 40px;
}

.adv-item h3 {
    margin-bottom: 15px;
}

.faq {
    padding: 80px 0;
}

.faq h2 {
    margin-bottom: 40px;
}

.faq details {
    margin-bottom: 15px;
    background: white;
    border-radius: 16px;
    padding: 20px;
}

.faq summary {
    cursor: pointer;
}

.request {
    padding: 100px 0;
}

.request-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.request form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.request input {
    height: 58px;
    border-radius: 14px;
    border: 1px solid #e4e8ef;
    padding: 0 16px;
}

.footer {
    padding: 30px 0;
}

.footer .container {
    display: flex;
    justify-content: space-between;
}

/* Планшет */

@media (max-width: 1024px) {

    .hero h1 {
        font-size: 48px;
    }

    .request-grid {
        grid-template-columns: 1fr;
    }

}

/* Телефон */

@media (max-width: 768px) {

    .menu,
    .header-buttons {
        display: none;
    }

    .header .container {
        justify-content: center;
    }

    .hero h1 {
        font-size: 36px;
    }

    .calc-row {
        flex-direction: column;
    }

    .adv-grid {
        grid-template-columns: 1fr;
    }

    .footer .container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

}