@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Playfair+Display:ital,wght@0,500;0,600;0,700;1,400&family=Inter:wght@300;400;500;600;700&family=Fira+Code:wght@400;500&display=swap');

:root {
    /* Editorial Light Color Palette */
    --bg-base: #ffffff;
    --bg-surface: #fafaf9; /* Warm off-white */
    --bg-card: #ffffff;
    --bg-card-hover: #f5f5f4;
    
    --text-primary: #1c1917; /* Slate-dark */
    --text-secondary: #57534e; /* Muted corporate grey */
    --text-muted: #8c8a82;
    
    --border-color: #e7e5e4; /* Elegant thin stone line */
    --border-color-hover: #c4c1ba;
    
    /* Product Palette - CBRI (Royal Blue) */
    --color-cbri: #1d4ed8;
    --color-cbri-rgb: 29, 78, 216;
    --grad-cbri: linear-gradient(135deg, #1e40af 0%, #3b82f6 100%);
    
    /* Product Palette - ISRI (Forest Green) */
    --color-isri: #047857;
    --color-isri-rgb: 4, 120, 87;
    --grad-isri: linear-gradient(135deg, #065f46 0%, #10b981 100%);
    
    /* Product Palette - CMRI (Rich Bronze/Amber) */
    --color-cmri: #b45309;
    --color-cmri-rgb: 180, 83, 9;
    --grad-cmri: linear-gradient(135deg, #92400e 0%, #d97706 100%);
    
    /* Typography settings */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-heading: 'Plus Jakarta Sans', sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-mono: 'Fira Code', monospace;
    --transition-smooth: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background-color: var(--bg-base);
}

body {
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Layout Containers */
.container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

.container-wide {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* Header & Glassmorphic Navigation */
header {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-smooth);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 22px;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    text-decoration: none;
}

.logo span {
    font-weight: 400;
    color: var(--text-muted);
}

.logo-dot {
    width: 6px;
    height: 6px;
    background: var(--color-cbri);
    border-radius: 50%;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-smooth);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px; left: 0; right: 0;
    height: 2px;
    background: var(--text-primary);
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.nav-links a:hover::after {
    transform: scaleX(1);
}

.nav-links .active-link {
    color: var(--text-primary);
}
.nav-links .active-link::after {
    transform: scaleX(1);
}

.nav-links .cta-link {
    background: var(--text-primary);
    color: var(--bg-base) !important;
    padding: 8px 18px;
    border-radius: 6px;
}
.nav-links .cta-link:hover {
    background: #000000;
    transform: translateY(-1px);
}
.nav-links .cta-link::after { display: none; }

/* Mobile Menu Button */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px; height: 36px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    width: 24px; height: 1.5px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: var(--transition-smooth);
}

.mobile-menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

/* Mobile Dropdown Nav */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: var(--bg-base);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px 28px;
    transform: translateY(-110%);
    opacity: 0;
    transition: var(--transition-smooth);
    z-index: 999;
}

.mobile-nav.active {
    transform: translateY(0);
    opacity: 1;
}

.mobile-nav a {
    display: block;
    padding: 14px 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    border-bottom: 1px solid var(--border-color);
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--text-primary); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-heading);
    text-decoration: none;
    border-radius: 6px;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-base);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}
.btn-primary:hover {
    background: #000000;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background: var(--bg-base);
    border-color: var(--text-primary);
    transform: translateY(-2px);
}

/* Hero Section */
.hero {
    padding: 180px 0 110px;
    text-align: center;
    position: relative;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-color);
}

.hero-eyebrow {
    font-family: var(--font-heading);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.hero h1 {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: 56px;
    line-height: 1.15;
    letter-spacing: -0.02em;
    max-width: 880px;
    margin: 0 auto 24px;
    color: var(--text-primary);
}

.hero h1 .gradient-text {
    font-style: italic;
    background: none;
    -webkit-text-fill-color: initial;
    color: var(--color-cbri);
}
.isri-theme .hero h1 .gradient-text {
    color: var(--color-isri);
}
.cmri-theme .hero h1 .gradient-text {
    color: var(--color-cmri);
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 400;
    color: var(--text-secondary);
    max-width: 680px;
    margin: 0 auto 40px;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

/* Sections General Styling */
.section {
    padding: 100px 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-eyebrow {
    font-family: var(--font-heading);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.section-title {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: 40px;
    line-height: 1.2;
    letter-spacing: -0.01em;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto;
}

/* Elegant Light Cards */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02), 0 4px 12px rgba(0, 0, 0, 0.01);
    transition: var(--transition-smooth);
}

.glass-card:hover {
    border-color: var(--border-color-hover);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    transform: translateY(-2px);
}

/* Three Product Grid System on Hub page */
.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.product-card {
    padding: 40px;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
    border-top: 3px solid var(--border-color) !important;
}

.product-card.cbri { border-top-color: var(--color-cbri) !important; }
.product-card.isri { border-top-color: var(--color-isri) !important; }
.product-card.cmri { border-top-color: var(--color-cmri) !important; }

.product-badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 24px;
}
.product-card.cbri .product-badge { background: rgba(29, 78, 216, 0.08); color: var(--color-cbri); }
.product-card.isri .product-badge { background: rgba(4, 120, 87, 0.08); color: var(--color-isri); }
.product-card.cmri .product-badge { background: rgba(180, 83, 9, 0.08); color: var(--color-cmri); }

.product-title {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.product-tagline {
    font-size: 12px;
    color: var(--text-muted);
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.product-desc {
    color: var(--text-secondary);
    font-size: 14.5px;
    line-height: 1.6;
    margin-bottom: 24px;
}

.product-bullets {
    list-style: none;
    margin-bottom: 36px;
    flex-grow: 1;
}

.product-bullets li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 13.5px;
    color: var(--text-secondary);
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}
.product-bullets li:last-child { border-bottom: none; }

.product-bullets li svg {
    width: 16px; height: 16px;
    margin-top: 3px;
    flex-shrink: 0;
}
.product-card.cbri .product-bullets li svg { color: var(--color-cbri); }
.product-card.isri .product-bullets li svg { color: var(--color-isri); }
.product-card.cmri .product-bullets li svg { color: var(--color-cmri); }

.product-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    font-weight: 700;
    font-family: var(--font-heading);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.product-card.cbri .product-link { color: var(--color-cbri); }
.product-card.isri .product-link { color: var(--color-isri); }
.product-card.cmri .product-link { color: var(--color-cmri); }

.product-link:hover {
    gap: 12px;
}

/* Stats Counter Section */
.stats-section {
    padding: 60px 0;
    background: var(--bg-base);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.stat-item {
    text-align: center;
    padding: 16px;
    border-right: 1px solid var(--border-color);
}
.stat-item:last-child {
    border-right: none;
}

.stat-num {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.015em;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.stat-item.highlight-cbri .stat-num { color: var(--color-cbri); }
.stat-item.highlight-isri .stat-num { color: var(--color-isri); }
.stat-item.highlight-cmri .stat-num { color: var(--color-cmri); }

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Features Grid on Product Pages */
.features-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.feature-box {
    padding: 36px;
    position: relative;
    border-radius: 8px;
}

.feature-box-icon {
    width: 40px;
    height: 40px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
}
.cbri-theme .feature-box-icon { color: var(--color-cbri); border-color: rgba(29, 78, 216, 0.2); background: rgba(29, 78, 216, 0.04); }
.isri-theme .feature-box-icon { color: var(--color-isri); border-color: rgba(4, 120, 87, 0.2); background: rgba(4, 120, 87, 0.04); }
.cmri-theme .feature-box-icon { color: var(--color-cmri); border-color: rgba(180, 83, 9, 0.2); background: rgba(180, 83, 9, 0.04); }

.feature-box-title {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-box-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.55;
}

/* Clean Professional App Window (Terminal) */
.terminal {
    background: #ffffff;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.02), 0 12px 30px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    max-width: 800px;
    margin: 48px auto 0;
}

.terminal-header {
    background: var(--bg-surface);
    height: 44px;
    display: flex;
    align-items: center;
    padding: 0 16px;
    border-bottom: 1px solid var(--border-color);
}

.terminal-controls {
    display: flex;
    gap: 6px;
}

.terminal-btn {
    width: 10px; height: 10px;
    border-radius: 50%;
    background-color: #d1d1d6;
}

.terminal-title {
    flex-grow: 1;
    text-align: center;
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
}

.terminal-body {
    padding: 24px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-primary);
    background: #ffffff;
}

.terminal-line {
    margin-bottom: 12px;
    color: var(--text-secondary);
}

.terminal-prompt {
    color: var(--text-primary);
    font-weight: 600;
    margin-right: 4px;
}

.terminal-output {
    margin-top: 16px;
    padding: 18px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-left: 3px solid var(--color-cbri);
    border-radius: 4px;
    opacity: 0;
    transform: translateY(8px);
    transition: var(--transition-smooth);
    color: var(--text-secondary);
}
.isri-theme .terminal-output { border-left-color: var(--color-isri); }
.cmri-theme .terminal-output { border-left-color: var(--color-cmri); }

.terminal-output.show {
    opacity: 1;
    transform: translateY(0);
}

.terminal-verdict {
    font-weight: 700;
    display: inline-block;
    padding: 3px 8px;
    border-radius: 3px;
    font-size: 10.5px;
    margin-bottom: 12px;
    text-transform: uppercase;
}
.verdict-compliant, .verdict-pass {
    background: rgba(4, 120, 87, 0.1);
    color: var(--color-isri);
}
.cbri-theme .verdict-compliant, .cbri-theme .verdict-pass {
    background: rgba(29, 78, 216, 0.1);
    color: var(--color-cbri);
}
.cmri-theme .verdict-compliant, .cmri-theme .verdict-pass {
    background: rgba(180, 83, 9, 0.1);
    color: var(--color-cmri);
}
.verdict-non-compliant, .verdict-fail {
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
}

.typing-cursor {
    display: inline-block;
    width: 6px; height: 14px;
    background: var(--text-primary);
    margin-left: 2px;
    animation: blink-cursor 0.9s infinite step-end;
    vertical-align: middle;
}

@keyframes blink-cursor {
    50% { opacity: 0; }
}

/* Split content layouts */
.split-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.split-content h2 {
    font-family: var(--font-serif);
    font-weight: 500;
    font-size: 36px;
    margin-bottom: 20px;
    line-height: 1.2;
    color: var(--text-primary);
}

.split-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 15px;
    line-height: 1.6;
}

/* Bullet lists */
.bullet-list {
    list-style: none;
    margin-bottom: 24px;
}

.bullet-list li {
    display: flex;
    gap: 12px;
    margin-bottom: 14px;
    font-size: 14.5px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.bullet-list li svg {
    width: 18px; height: 18px;
    color: var(--color-cbri);
    margin-top: 3px;
    flex-shrink: 0;
}
.isri-theme .bullet-list li svg { color: var(--color-isri); }
.cmri-theme .bullet-list li svg { color: var(--color-cmri); }

/* Knowledge base columns (3-columns) */
.knowledge-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.knowledge-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-top: 48px;
}

.knowledge-col {
    padding: 36px;
    border-radius: 8px;
}

.knowledge-col-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-primary);
}

.knowledge-col-title::before {
    content: '';
    width: 6px; height: 6px;
    border-radius: 50%;
}
.cbri-theme .knowledge-col-title::before { background-color: var(--color-cbri); }
.isri-theme .knowledge-col-title::before { background-color: var(--color-isri); }
.cmri-theme .knowledge-col-title::before { background-color: var(--color-cmri); }

.knowledge-col-list {
    list-style: none;
}

.knowledge-col-list li {
    padding: 14px 0;
    border-bottom: 1px solid var(--border-color);
}
.knowledge-col-list li:last-child { border-bottom: none; }

.knowledge-col-list strong {
    display: block;
    font-size: 14px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.knowledge-col-list span {
    font-size: 13px;
    color: var(--text-secondary);
}

/* Architecture Pillars */
.arch-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-top: 48px;
}

.arch-item {
    text-align: center;
}

.arch-icon {
    width: 56px; height: 56px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    color: var(--color-cbri);
}
.isri-theme .arch-icon { color: var(--color-isri); }
.cmri-theme .arch-icon { color: var(--color-cmri); }

.arch-item h3 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.arch-item p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Premium Contact Form */
.contact-section {
    padding: 100px 0;
    background-color: var(--bg-surface);
    border-top: 1px solid var(--border-color);
}

.contact-card {
    max-width: 640px;
    margin: 0 auto;
    padding: 48px;
    border-radius: 8px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 20px;
}

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

.form-group label {
    display: block;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: var(--bg-base);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 14.5px;
    color: var(--text-primary);
    transition: var(--transition-smooth);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--text-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.03);
}

.form-group select option {
    background-color: var(--bg-base);
    color: var(--text-primary);
}

.form-group textarea {
    min-height: 120px;
    resize: vertical;
}

.submit-btn {
    width: 100%;
    padding: 14px 28px;
    background: var(--text-primary);
    color: var(--bg-base);
    border: none;
    border-radius: 6px;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 15px;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.submit-btn:hover {
    background: #000000;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.submit-btn:active {
    transform: translateY(0);
}

/* Footer Section */
footer {
    padding: 60px 0;
    background: var(--bg-base);
    border-top: 1px solid var(--border-color);
}

.footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-text {
    font-size: 13.5px;
    color: var(--text-secondary);
}

.footer-text a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13.5px;
    transition: var(--transition-smooth);
}

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

/* Scroll reveal classes */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Breakpoints */
@media (max-width: 992px) {
    .hero h1 { font-size: 44px; }
    .products-grid { grid-template-columns: 1fr; gap: 32px; }
    .product-card { padding: 32px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
    .stat-item { border-right: none; }
    .stat-item:nth-child(odd) { border-right: 1px solid var(--border-color); }
    .knowledge-grid { grid-template-columns: 1fr; gap: 24px; }
    .knowledge-grid-2 { grid-template-columns: 1fr; gap: 24px; }
    .arch-grid { grid-template-columns: 1fr; gap: 32px; }
    .split-layout { grid-template-columns: 1fr; gap: 36px; }
    .features-container { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .hero h1 { font-size: 36px; }
    .hero-subtitle { font-size: 16px; }
    .section-title { font-size: 30px; }
    .stat-num { font-size: 20px; }
    .nav-links { display: none; }
    .mobile-menu-toggle { display: flex; }
    .mobile-nav { display: block; }
    .form-row { grid-template-columns: 1fr; gap: 0; }
    .contact-card { padding: 32px 24px; }
    .footer-inner { flex-direction: column; gap: 24px; text-align: center; }
    .footer-links { justify-content: center; }
}