/* Базовый стиль сайта-лендинга Testsl Sites — светлая тема, чистый CSS */

* {box-sizing: border-box;}

body {margin: 0; font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif; color: #212529; background: #f5f7fb;}
a {text-decoration: none;}
img {max-width: 100%;}

/* Шапка */
.site-header {position: sticky; top: 0; z-index: 100; background: #ffffff; border-bottom: 1px solid #e9ecef;}
.site-header__inner {max-width: 1140px; margin: 0 auto; padding: 14px 16px; display: flex; align-items: center; gap: 24px;}
.site-header__logo {display: flex; align-items: center; gap: 10px; font-size: 18px; font-weight: 800; color: #0d6efd;}
.site-header__logo span {color: #212529;}
.site-header__nav {display: flex; gap: 20px; flex: 1 1 auto;}
.site-header__nav a {color: #495057; font-size: 15px; font-weight: 500;}
.site-header__nav a:hover {color: #0d6efd;}
.site-header__cta {padding: 9px 20px; border-radius: 10px; background: #0d6efd; color: #ffffff; font-size: 14px; font-weight: 600;}
.site-header__cta:hover {background: #0b5ed7;}

/* Первый экран */
.site-hero {background: linear-gradient(160deg, #eef3ff, #f5f7fb); padding: 96px 16px 80px;}
.site-hero__inner {max-width: 860px; margin: 0 auto; text-align: center;}
.site-hero h1 {font-size: 42px; font-weight: 800; margin: 0 0 16px; line-height: 1.2;}
.site-hero p {max-width: 640px; margin: 0 auto 28px; color: #6c757d; font-size: 17px; line-height: 1.6;}
.site-hero__actions {display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;}

/* Кнопки */
.site-btn {display: inline-block; padding: 12px 26px; border-radius: 12px; font-size: 15px; font-weight: 600;}
.site-btn--primary {background: #0d6efd; color: #ffffff;}
.site-btn--primary:hover {background: #0b5ed7;}
.site-btn--ghost {background: #ffffff; color: #495057; border: 1px solid #dee2e6;}
.site-btn--ghost:hover {color: #0d6efd; border-color: #0d6efd;}

/* Секции */
.site-section {padding: 72px 0;}
.site-section__inner {max-width: 1140px; margin: 0 auto; padding: 0 16px; text-align: center;}
.site-section__title {font-size: 30px; font-weight: 800; margin: 0 0 12px;}
.site-section__text {max-width: 680px; margin: 0 auto; color: #6c757d; font-size: 16px; line-height: 1.65;}
.site-section--alt {background: #ffffff;}

/* Возможности */
.site-features {display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 40px; text-align: left;}
.site-feature {background: #ffffff; border: 1px solid #e9ecef; border-radius: 16px; padding: 26px;}
.site-feature__icon {width: 46px; height: 46px; display: flex; align-items: center; justify-content: center; border-radius: 12px; background: rgba(13, 110, 253, 0.08); color: #0d6efd; font-size: 20px; margin-bottom: 14px;}
.site-feature__title {font-size: 17px; font-weight: 700; margin: 0 0 8px;}
.site-feature__text {color: #6c757d; font-size: 14px; line-height: 1.6; margin: 0;}

/* Подвал */
.site-footer {background: #ffffff; border-top: 1px solid #e9ecef;}
.site-footer__inner {max-width: 1140px; margin: 0 auto; padding: 24px 16px; display: flex; justify-content: space-between; gap: 12px; color: #6c757d; font-size: 13.5px; flex-wrap: wrap;}

@media (max-width: 767.98px) {
    .site-hero h1 {font-size: 30px;}
    .site-features {grid-template-columns: 1fr;}
    .site-header__nav {display: none;}
}