@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;700&display=swap');

:root {
    --es-clean-primary: #0A2540;   /* Глубокий синий (корпоративный) */
    --es-clean-secondary: #00D4FF; /* Голубой (свежесть) */
    --es-clean-bg: #F6F9FC;        /* Светло-серый фон (Swiss style) */
    --es-clean-text: #333333;
    --es-clean-white: #FFFFFF;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: 'Inter', sans-serif; background-color: var(--es-clean-bg); color: var(--es-clean-text); line-height: 1.6; }
h1, h2, h3, h4 { color: var(--es-clean-primary); font-weight: 700; letter-spacing: -0.5px; }
.es-clean-container { max-width: 1140px; margin: 0 auto; padding: 0 20px; }

/* Header */
.es-clean-header { background: var(--es-clean-white); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid #E6E8EB; box-shadow: 0 2px 10px rgba(0,0,0,0.02); }
.es-clean-header-inner { display: flex; justify-content: space-between; align-items: center; height: 80px; }
.es-clean-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; font-weight: 700; font-size: 1.25rem; color: var(--es-clean-primary); letter-spacing: -0.5px; }
.es-clean-logo img { height: 36px; width: 36px; }
.es-clean-nav { display: flex; gap: 32px; }
.es-clean-nav a { text-decoration: none; color: #4A5568; font-weight: 600; font-size: 0.95rem; transition: color 0.2s; }
.es-clean-nav a:hover { color: var(--es-clean-secondary); }
.es-clean-hamburger { display: none; font-size: 26px; cursor: pointer; color: var(--es-clean-primary); }

/* Hero */
.es-clean-hero { background: var(--es-clean-primary); color: var(--es-clean-white); padding: 100px 0; border-bottom: 8px solid var(--es-clean-secondary); }
.es-clean-hero h1 { color: var(--es-clean-white); font-size: 3.5rem; margin-bottom: 24px; line-height: 1.1; }
.es-clean-hero p { font-size: 1.15rem; max-width: 600px; margin-bottom: 40px; color: #A0AAB2; font-weight: 300; }
.es-clean-btn { display: inline-block; background: var(--es-clean-secondary); color: var(--es-clean-primary); padding: 16px 32px; text-decoration: none; font-weight: 700; border-radius: 4px; transition: 0.3s; border: none; cursor: pointer; font-size: 1rem; text-transform: uppercase; letter-spacing: 0.5px; }
.es-clean-btn:hover { background: #FFFFFF; transform: translateY(-2px); }

/* Sections & Grid */
.es-clean-section { padding: 80px 0; }
.es-clean-grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; margin-top: 40px; }
.es-clean-card { background: var(--es-clean-white); padding: 40px; border-radius: 8px; border: 1px solid #E6E8EB; transition: all 0.3s ease; }
.es-clean-card:hover { transform: translateY(-4px); box-shadow: 0 12px 24px rgba(10,37,64,0.06); border-color: var(--es-clean-secondary); }
.es-clean-card h3 { margin-bottom: 15px; font-size: 1.3rem; }

/* Form */
.es-clean-form-box { background: var(--es-clean-white); padding: 48px; border-radius: 8px; border: 1px solid #E6E8EB; box-shadow: 0 20px 40px rgba(0,0,0,0.04); }
.es-clean-input { width: 100%; padding: 16px; margin-bottom: 20px; border: 1px solid #D1D5DB; border-radius: 4px; font-family: inherit; font-size: 0.95rem; background: #F9FAFB; transition: border-color 0.2s; }
.es-clean-input:focus { outline: none; border-color: var(--es-clean-primary); background: #FFF; }

/* Footer */
.es-clean-footer { background: #06182B; color: #8F9BA8; padding: 60px 0 30px; margin-top: auto; }
.es-clean-footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 40px; margin-bottom: 40px; }
.es-clean-footer h4 { color: var(--es-clean-white); margin-bottom: 20px; font-size: 1.1rem; }
.es-clean-footer a { color: #8F9BA8; text-decoration: none; display: block; margin-bottom: 12px; transition: color 0.2s; }
.es-clean-footer a:hover { color: var(--es-clean-white); }
.es-clean-bottom { border-top: 1px solid #1A2E44; padding-top: 24px; text-align: center; font-size: 0.85rem; }

/* Mobile */
@media (max-width: 768px) {
    .es-clean-hamburger { display: block; }
    .es-clean-nav { display: none; flex-direction: column; position: absolute; top: 80px; left: 0; width: 100%; background: var(--es-clean-white); padding: 20px; border-bottom: 1px solid #E6E8EB; box-shadow: 0 4px 6px rgba(0,0,0,0.05); }
    .es-clean-nav.es-clean-active { display: flex; }
    .es-clean-hero h1 { font-size: 2.5rem; }
    .es-clean-hero { padding: 60px 0; }
}