:root {
    /* Color Palette (Industrial B2B) */
    --primary: #DD6B20; /* Orange CTA */
    --primary-hover: #C05621;
    --dark: #1A202C; /* Graphite/Dark Blue tint */
    --gray-dark: #2D3748;
    --gray-light: #E2E8F0; /* Metallic Grey */
    --gray-text: #4A5568;
    --bg-body: #FFFFFF;
    --bg-light: #F7FAFC; /* Very light grey for alternate sections */
    --border-color: #CBD5E0;
    
    /* Typography */
    --font-family: 'Inter', sans-serif;
    
    /* Layout */
    --container-width: 1280px;
    --container-padding: 24px;
    --border-radius: 6px; /* Slightly sharper corners for industrial feel */
    --transition: all 0.3s ease;
}

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

body {
    font-family: var(--font-family);
    color: var(--dark);
    background-color: var(--bg-body);
    line-height: 1.6;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    overflow-wrap: break-word;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Layout */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: 80px 0;
}

.section.bg-light {
    background-color: var(--bg-light);
}

.section-header {
    margin-bottom: 48px;
    max-width: 800px;
}

.section-header.text-center {
    margin: 0 auto 48px auto;
    text-center: center;
}

.section-header h2 {
    font-size: 36px;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
}

.section-subtitle {
    font-size: 18px;
    color: var(--gray-text);
    margin-bottom: 16px;
}

.highlight-text {
    color: var(--dark);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    font-weight: 600;
    font-size: 16px;
    border-radius: var(--border-radius);
    text-align: center;
}

.btn-primary {
    background-color: var(--primary);
    color: #FFFFFF;
}

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

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: #FFFFFF;
}

.btn-block {
    width: 100%;
}

/* Grids */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }

/* Header */
.site-header {
    background-color: var(--bg-body);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
}

.header-top {
    border-bottom: 1px solid var(--border-color);
}

.header-top-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.header-bottom {
    background-color: var(--bg-body);
}

.logo-block {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 24px;
    font-weight: 800;
    color: var(--dark);
    line-height: 1;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.logo-subtitle {
    font-size: 12px;
    color: var(--gray-text);
    margin-top: 4px;
}

.main-nav > ul {
    display: flex;
    gap: 32px;
    height: 50px;
    align-items: center;
}

.main-nav a {
    font-size: 15px;
    font-weight: 500;
    color: var(--dark);
    transition: all 0.2s ease;
}

.main-nav a:hover {
    color: var(--primary);
}

.has-dropdown {
    position: relative;
}

.has-dropdown > a {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* Invisible bridge to prevent hover loss */
.has-dropdown::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 0;
    width: 100%;
    height: 15px;
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 12px);
    left: -20px;
    background: #FFFFFF;
    border: 1px solid rgba(0,0,0,0.06);
    border-radius: 12px;
    padding: 16px;
    min-width: 280px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px) scale(0.98);
    transform-origin: top left;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
    gap: 4px;
    z-index: 2000;
}

/* Small caret pointing up */
.dropdown-menu::before {
    content: '';
    position: absolute;
    top: -6px;
    left: 32px;
    width: 12px;
    height: 12px;
    background: #FFFFFF;
    transform: rotate(45deg);
    border-left: 1px solid rgba(0,0,0,0.06);
    border-top: 1px solid rgba(0,0,0,0.06);
}

.has-dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.dropdown-menu li {
    list-style: none;
    width: 100%;
}

.dropdown-menu li a {
    display: block;
    padding: 12px 16px;
    font-weight: 500;
    font-size: 15px;
    color: var(--gray-dark);
    border-radius: 8px;
    transition: all 0.2s ease;
}

.dropdown-menu li a:hover {
    background-color: var(--bg-light);
    color: var(--primary);
    transform: translateX(4px);
}

.header-contact {
    display: flex;
    align-items: center;
    gap: 20px;
}

.header-contacts {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
}

.header-contacts a {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--dark);
    transition: all 0.2s ease;
}

.header-contacts a:hover {
    color: var(--primary);
}

.header-email {
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-text);
}

.header-phone {
    font-weight: 700;
    font-size: 18px;
}

.header-btn {
    padding: 10px 20px;
    font-size: 14px;
}

.mobile-menu-toggle {
    display: none;
    font-size: 28px;
    color: var(--dark);
}

/* Hero Section */
.hero-section {
    background-color: var(--gray-dark);
    color: #FFFFFF;
    padding: 64px 0 80px 0;
    background-image: linear-gradient(135deg, var(--dark) 0%, var(--gray-dark) 100%);
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 64px;
    align-items: center;
}

.hero-title {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -1px;
}

.hero-lead {
    font-size: 22px;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
}

.hero-text {
    font-size: 18px;
    color: var(--gray-light);
    margin-bottom: 32px;
    line-height: 1.6;
}

.hero-trust {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.hero-trust li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 16px;
    color: #E2E8F0;
}

.hero-trust iconify-icon {
    color: var(--primary);
    font-size: 20px;
    flex-shrink: 0;
    margin-top: 2px;
}

/* Universal Form */
.hero-form-wrapper {
    background: #FFFFFF;
    padding: 40px;
    border-radius: 8px;
    color: var(--dark);
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.form-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 24px;
    text-align: center;
}

.form-group {
    margin-bottom: 16px;
}

.form-group input, .form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: 15px;
    color: var(--dark);
    background-color: var(--bg-light);
    outline: none;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--primary);
    background-color: #FFFFFF;
}

.file-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
}

.file-label iconify-icon {
    font-size: 20px;
}

.form-microtext {
    font-size: 12px;
    color: var(--gray-text);
    text-align: center;
    margin-top: 16px;
    line-height: 1.4;
}

/* Cards (Pain Points & Audience) */
.card {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px 24px;
    transition: var(--transition);
}

.card:hover {
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    transform: translateY(-4px);
    border-color: var(--gray-light);
}

.card-icon {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 20px;
}

.card h3 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
}

.card p {
    color: var(--gray-text);
    font-size: 15px;
}

/* Catalog Grid */
.catalog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}

.catalog-link {
    display: block;
    position: relative;
    padding: 24px 20px;
    min-height: 140px;
    border-radius: var(--border-radius);
    font-weight: 700;
    font-size: 16px;
    color: #FFFFFF;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    overflow: hidden;
    transition: var(--transition);
    border: none;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.catalog-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to top, rgba(26,32,44,0.9) 0%, rgba(26,32,44,0.3) 100%);
    z-index: 1;
    transition: var(--transition);
}

.catalog-link:hover::before {
    background: linear-gradient(to top, rgba(221,107,32,0.9) 0%, rgba(221,107,32,0.4) 100%);
}

.catalog-link:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 20px rgba(0,0,0,0.15);
}

.catalog-link span {
    position: relative;
    z-index: 2;
    display: flex;
    height: 100%;
    align-items: flex-end;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

/* Process Steps */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.step-card {
    display: flex;
    flex-direction: column;
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 32px;
    position: relative;
    padding-left: 100px;
}

.step-number {
    position: absolute;
    left: 32px;
    top: 32px;
    width: 48px;
    height: 48px;
    background: var(--dark);
    color: #FFFFFF;
    font-size: 24px;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.step-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-card p {
    color: var(--gray-text);
    font-size: 16px;
}

/* Advantages */
.adv-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.adv-icon {
    font-size: 32px;
    color: var(--primary);
    flex-shrink: 0;
    margin-top: 4px;
}

.adv-item h4 {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
}

.adv-item p {
    color: var(--gray-text);
}
/* Selection Criteria Block */
.criteria-block {
    display: grid;
    grid-template-columns: 0.8fr 1.2fr;
    background: #FFFFFF;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.06);
    border: 1px solid var(--border-color);
}

.criteria-info {
    background: linear-gradient(135deg, var(--primary) 0%, #1A202C 100%);
    padding: 48px;
    color: #FFFFFF;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.criteria-info h2 {
    color: #FFFFFF;
    margin-bottom: 20px;
    font-size: 32px;
    line-height: 1.2;
}

.criteria-info p {
    color: rgba(255,255,255,0.9);
    font-size: 16px;
    line-height: 1.6;
}

.criteria-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-content: stretch;
}

.criteria-item {
    padding: 32px 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.criteria-item:hover {
    background: var(--bg-light);
}

.criteria-item:nth-child(even) {
    border-right: none;
}

.criteria-item:nth-last-child(1),
.criteria-item:nth-last-child(2) {
    border-bottom: none;
}

.criteria-icon-wrap {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--bg-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 24px;
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.criteria-item:hover .criteria-icon-wrap {
    background: var(--primary);
    color: #FFFFFF;
    transform: scale(1.1);
}

.criteria-text {
    font-size: 15px;
    font-weight: 600;
    margin: 0;
    color: var(--dark);
    line-height: 1.4;
}


/* FAQ */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.faq-item {
    background: #FFFFFF;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 24px;
    text-align: left;
    font-size: 18px;
    font-weight: 600;
    color: var(--dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question iconify-icon {
    font-size: 24px;
    color: var(--gray-text);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question iconify-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 24px;
}

.faq-item.active .faq-answer {
    padding: 0 24px 24px 24px;
    max-height: 500px; /* arbitrary max height for animation */
}

.faq-answer p {
    color: var(--gray-text);
    line-height: 1.6;
}

/* Pre-Footer CTA */
.section-cta {
    background-color: var(--primary);
    color: #FFFFFF;
    padding: 80px 0;
}

.cta-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.cta-inner h2 {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 24px;
}

.cta-inner p {
    font-size: 18px;
    margin-bottom: 32px;
}

.cta-benefits {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    text-align: left;
    margin-bottom: 40px;
}

.cta-benefits li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    font-size: 16px;
}

.cta-benefits iconify-icon {
    font-size: 24px;
    margin-top: 2px;
    color: #FFFFFF;
    opacity: 0.8;
}

.cta-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.cta-actions .btn-primary {
    background-color: var(--dark);
}

.cta-actions .btn-primary:hover {
    background-color: #000000;
}

.cta-actions .btn-outline {
    border-color: #FFFFFF;
    color: #FFFFFF;
}

.cta-actions .btn-outline:hover {
    background-color: #FFFFFF;
    color: var(--primary);
}

.hero-lead {
    font-size: 18px;
    color: var(--primary);
    margin-bottom: 30px;
    max-width: 800px;
    line-height: 1.6;
}

.hero-trust {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 16px;
    color: #E2E8F0;
}
.hero-trust li {
    display: flex;
    align-items: center;
    gap: 10px;
}
.hero-trust iconify-icon {
    color: var(--primary);
    font-size: 20px;
}

.hero-form-wrapper {
    background: #FFF;
    padding: 32px;
    border-radius: var(--border-radius);
    color: var(--dark);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}
.form-title {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
}
.form-subtitle {
    font-size: 14px;
    margin-bottom: 24px;
    color: var(--gray-text);
}
.form-group {
    margin-bottom: 16px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-family);
    outline: none;
    transition: var(--transition);
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary);
}
.form-group textarea {
    resize: vertical;
}
.file-upload {
    margin-bottom: 24px;
}
.file-label {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary);
    font-weight: 600;
    cursor: pointer;
}
.file-label iconify-icon {
    font-size: 20px;
}
.lead-form button[type="submit"] {
    width: 100%;
    margin-bottom: 12px;
}
.call-btn {
    width: 100%;
    display: block;
    text-align: center;
}
.form-note {
    font-size: 12px;
    color: var(--gray-text);
    text-align: center;
    margin-top: 16px;
}

/* Forms general */
.site-footer {
    background-color: var(--dark);
    color: #FFFFFF;
    padding-top: 80px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

.footer-logo {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-desc {
    color: var(--gray-light);
    font-size: 14px;
    margin-bottom: 24px;
    max-width: 300px;
}

.footer-heading {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 24px;
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    color: var(--gray-light);
    font-size: 15px;
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #FFFFFF;
}

.footer-contact-item iconify-icon {
    font-size: 24px;
    color: var(--primary);
}

.footer-phone {
    font-size: 20px;
    font-weight: 700;
}

.footer-bottom {
    border-top: 1px solid var(--gray-dark);
    padding: 24px 0;
    color: var(--gray-light);
    font-size: 14px;
    text-align: center;
}

/* Global Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(4px);
    z-index: 9999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 500px;
    background: transparent;
    transform: translateY(20px);
    transition: all 0.3s ease;
    margin: 20px;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    background: transparent;
    border: none;
    font-size: 28px;
    line-height: 1;
    color: var(--gray-text);
    cursor: pointer;
    z-index: 10;
    transition: color 0.2s ease;
}

.modal-close:hover {
    color: var(--dark);
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    .hero-title { font-size: 36px; }
    .grid-4, .grid-3 { grid-template-columns: repeat(2, 1fr); }
    .footer-inner { grid-template-columns: repeat(2, 1fr); }
    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: #FFFFFF;
        box-shadow: 0 20px 40px rgba(0,0,0,0.1);
        border-top: 1px solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.4s ease-in-out, opacity 0.3s ease;
        opacity: 0;
    }
    .main-nav.is-open {
        max-height: 80vh;
        opacity: 1;
        overflow-y: auto;
    }
    .main-nav > ul {
        flex-direction: column;
        height: auto;
        padding: 24px;
        align-items: flex-start;
        gap: 0;
    }
    .main-nav > ul > li {
        width: 100%;
        border-bottom: 1px solid rgba(0,0,0,0.05);
    }
    .main-nav > ul > li:last-child {
        border-bottom: none;
    }
    .main-nav > ul > li > a {
        display: flex;
        padding: 16px 0;
        width: 100%;
        font-size: 16px;
        justify-content: space-between;
    }
    .main-nav a:hover {
        background: transparent;
    }
    
    /* Mobile Dropdown Menu */
    .dropdown-menu {
        position: static;
        visibility: visible;
        opacity: 1;
        transform: none;
        box-shadow: none;
        border: none;
        border-left: 2px solid var(--primary);
        border-radius: 0;
        padding: 0 0 0 16px;
        margin: 0 0 0 8px;
        min-width: 100%;
        display: none;
    }
    .dropdown-menu::before {
        display: none;
    }
    .has-dropdown.active .dropdown-menu {
        display: flex;
        margin-bottom: 16px;
    }
    .has-dropdown.active > a {
        color: var(--primary);
    }
    .has-dropdown.active > a iconify-icon {
        transform: rotate(180deg);
    }
    .has-dropdown::after {
        display: none;
    }
    .header-contact { display: none; }
    .mobile-menu-toggle { display: block; }
    .criteria-block { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .section { padding: 48px 0; }
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
    .cta-benefits { grid-template-columns: 1fr; }
    .cta-actions { flex-direction: column; }
    .step-card { padding: 24px 24px 24px 80px; }
    .step-number { left: 16px; top: 16px; width: 40px; height: 40px; font-size: 20px; }
    .hero-form-wrapper { padding: 24px; }
    .footer-inner { grid-template-columns: 1fr; gap: 32px; }
    .section-header h2 { font-size: 28px; }
    .criteria-list { grid-template-columns: 1fr; }
    .criteria-item { border-right: none !important; }
    .criteria-item:nth-last-child(2) { border-bottom: 1px solid var(--border-color); }
}