:root {
    --color-primary: #E85D26;
    --color-primary-dark: #C44A1B;
    --color-primary-light: #F28C5E;
    --color-secondary: #1E3A5F;
    --color-secondary-dark: #152A45;
    --color-accent: #2ECC71;
    --color-accent-dark: #27AE60;
    --color-bg: #F5F7FA;
    --color-bg-white: #FFFFFF;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-text-muted: #999999;
    --color-border: #E0E4E8;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 12px 48px rgba(0, 0, 0, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
}

.logo__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: var(--color-primary);
    color: white;
    font-weight: 800;
    font-size: 18px;
    border-radius: var(--radius-sm);
}

.logo__text {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-secondary);
}

.nav {
    display: flex;
    gap: 32px;
}

.nav__link {
    text-decoration: none;
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: var(--transition);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-primary);
}

.nav__link:hover::after,
.nav__link--active::after {
    width: 100%;
}

.header__cta {
    display: inline-flex;
    align-items: center;
    padding: 10px 24px;
    background: var(--color-primary);
    color: white;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.header__cta:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.burger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

/* Hero */
.hero {
    padding: 140px 0 80px;
    background: linear-gradient(135deg, var(--color-bg) 0%, #E8EDF2 100%);
    overflow: hidden;
}

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

.hero__title {
    font-size: 52px;
    font-weight: 800;
    line-height: 1.15;
    color: var(--color-secondary);
    margin-bottom: 20px;
}

.highlight {
    color: var(--color-primary);
}

.hero__subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    margin-bottom: 32px;
    max-width: 520px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: white;
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-secondary);
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

.hero__buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
}

.hero__stats {
    display: flex;
    gap: 48px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat__number {
    font-size: 32px;
    font-weight: 800;
    color: var(--color-secondary);
}

.stat__label {
    font-size: 14px;
    color: var(--color-text-muted);
    font-weight: 500;
}

.hero__visual {
    position: relative;
    height: 400px;
}

.hero__card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 28px;
    background: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    animation: float 6s ease-in-out infinite;
}

.hero__card--1 {
    top: 20px;
    left: 40px;
    animation-delay: 0s;
}

.hero__card--2 {
    top: 140px;
    right: 20px;
    animation-delay: 2s;
}

.hero__card--3 {
    bottom: 40px;
    left: 60px;
    animation-delay: 4s;
}

.hero__card-icon {
    font-size: 32px;
}

.hero__card-text {
    display: flex;
    flex-direction: column;
}

.hero__card-name {
    font-weight: 700;
    font-size: 16px;
    color: var(--color-secondary);
}

.hero__card-desc {
    font-size: 13px;
    color: var(--color-text-muted);
    font-weight: 400;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: var(--transition);
}

.btn--primary {
    background: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background: transparent;
    color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.btn--outline:hover {
    background: var(--color-secondary);
    color: white;
    transform: translateY(-2px);
}

.btn--full {
    width: 100%;
}

/* Section Headers */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 40px;
    font-weight: 800;
    color: var(--color-secondary);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

/* Services */
.services {
    padding: 100px 0;
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.service-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 36px;
    transition: var(--transition);
    border: 1px solid var(--color-border);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.service-card__icon {
    font-size: 40px;
    margin-bottom: 20px;
}

.service-card__title {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 12px;
}

.service-card__text {
    font-size: 15px;
    color: var(--color-text-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-card__list {
    list-style: none;
}

.service-card__list li {
    padding: 6px 0;
    font-size: 14px;
    color: var(--color-text-light);
    position: relative;
    padding-left: 20px;
}

.service-card__list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: 700;
}

/* Advantages */
.advantages {
    padding: 100px 0;
    background: var(--color-secondary);
    color: white;
}

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

.advantages .section-subtitle {
    color: rgba(255, 255, 255, 0.7);
}

.advantages__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.advantage {
    padding: 32px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.advantage:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-4px);
}

.advantage__number {
    font-size: 48px;
    font-weight: 800;
    color: var(--color-primary);
    opacity: 0.8;
    margin-bottom: 16px;
}

.advantage__title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
}

.advantage__text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
}

/* Contact */
.contact {
    padding: 100px 0;
}

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

.contact__text {
    font-size: 18px;
    color: var(--color-text-light);
    margin-bottom: 40px;
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact__detail {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.contact__detail-icon {
    font-size: 24px;
    margin-top: 2px;
}

.contact__detail-label {
    font-size: 13px;
    color: var(--color-text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.contact__detail-value {
    font-size: 16px;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

a.contact__detail-value:hover {
    color: var(--color-primary);
}

/* Form */
.contact__form {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
}

.contact__form-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: 28px;
}

.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    font-family: inherit;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    transition: var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    background: white;
    box-shadow: 0 0 0 4px rgba(232, 93, 38, 0.1);
}

.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-note {
    font-size: 12px;
    color: var(--color-text-muted);
    text-align: center;
    margin-top: 16px;
}

/* Reviews */
.reviews {
    padding: 100px 0;
    background: var(--color-bg);
}

.reviews__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.review-card {
    position: relative;
    background: white;
    border-radius: var(--radius-lg);
    padding: 36px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.review-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.review-card__stars {
    color: #F5A623;
    font-size: 18px;
    letter-spacing: 2px;
    margin-bottom: 16px;
}

.review-card__text {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-light);
    margin-bottom: 24px;
    flex: 1;
}

.review-card__author {
    border-top: 1px solid var(--color-border);
    padding-top: 16px;
}

.review-card__name {
    display: block;
    font-weight: 700;
    font-size: 15px;
    color: var(--color-secondary);
    margin-bottom: 4px;
}

.review-card__org {
    display: block;
    font-size: 13px;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* FAQ */
.faq {
    padding: 100px 0;
}

.faq__list {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq__item {
    background: white;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: var(--transition);
}

.faq__item.active {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.faq__question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: 16px;
    font-weight: 600;
    color: var(--color-secondary);
    text-align: left;
    transition: var(--transition);
}

.faq__question:hover {
    color: var(--color-primary);
}

.faq__icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--color-bg);
    color: var(--color-primary);
    font-size: 20px;
    font-weight: 600;
    transition: var(--transition);
}

.faq__item.active .faq__icon {
    transform: rotate(45deg);
    background: var(--color-primary);
    color: white;
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 24px;
}

.faq__item.active .faq__answer {
    max-height: 500px;
    padding: 0 24px 20px;
}

.faq__answer p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--color-text-light);
}

/* Service card tags (редакции конфигураций) */
.service-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border);
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 12px;
    font-weight: 600;
    color: var(--color-secondary);
}

/* Messenger buttons */
.contact__messengers {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.contact__messenger {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.contact__messenger:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

/* Footer */
.footer {
    background: var(--color-secondary-dark);
    color: white;
    padding-top: 60px;
}

.footer__inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
}

.footer__tagline {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 16px;
    max-width: 280px;
}

.footer__heading {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer__link {
    display: block;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    padding: 6px 0;
    transition: var(--transition);
}

.footer__link:hover {
    color: var(--color-primary-light);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero__title {
        font-size: 40px;
    }

    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .reviews__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .advantages__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer__inner {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-lg);
    }

    .nav.active {
        display: flex;
    }

    .header__cta {
        display: none;
    }

    .burger {
        display: flex;
    }

    .burger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .burger.active span:nth-child(2) {
        opacity: 0;
    }

    .burger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__title {
        font-size: 36px;
    }

    .hero__subtitle {
        margin: 0 auto 32px;
    }

    .hero__buttons {
        justify-content: center;
    }

    .hero__stats {
        justify-content: center;
    }

    .hero__visual {
        display: none;
    }

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

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

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

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

    .section-title {
        font-size: 32px;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 120px 0 60px;
    }

    .hero__title {
        font-size: 28px;
    }

    .hero__buttons {
        flex-direction: column;
    }

    .hero__stats {
        flex-direction: column;
        gap: 24px;
        align-items: center;
    }

    .contact__form {
        padding: 24px;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}