/**
 * SentinelSuite Theme - Main Stylesheet
 *
 * Table of Contents:
 * 1. CSS Variables
 * 2. Reset & Base
 * 3. Typography
 * 4. Layout
 * 5. Components
 *    - Buttons
 *    - Badges
 *    - Cards
 * 6. Header
 * 7. Hero
 * 8. Stats
 * 9. Sections
 * 10. Products
 * 11. Features
 * 12. Guarantees
 * 13. Testimonials
 * 14. Agency
 * 15. FAQ
 * 16. Footer
 * 17. Utilities
 * 18. Animations
 * 19. Responsive
 */

/* ==========================================================================
   1. CSS Variables
   ========================================================================== */
:root {
    /* Colors - Primary */
    --color-primary: #2563eb;
    --color-primary-dark: #1d4ed8;
    --color-primary-50: #eff6ff;
    --color-primary-100: #dbeafe;
    --color-primary-200: #bfdbfe;
    --color-primary-300: #93c5fd;
    --color-primary-400: #60a5fa;
    --color-primary-500: #3b82f6;
    --color-primary-600: #2563eb;
    --color-primary-700: #1d4ed8;
    --color-primary-800: #1e40af;
    --color-primary-900: #1e3a8a;
    
    /* Colors - Neutral */
    --color-white: #ffffff;
    --color-gray-50: #f8fafc;
    --color-gray-100: #f1f5f9;
    --color-gray-200: #e2e8f0;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    --color-gray-800: #1e293b;
    --color-gray-900: #0f172a;
    --color-gray-950: #020617;
    
    /* Colors - Semantic */
    --color-success-50: #ecfdf5;
    --color-success-500: #10b981;
    --color-success-600: #059669;
    --color-warning-50: #fffbeb;
    --color-warning-500: #f59e0b;
    --color-warning-600: #d97706;
    --color-danger-50: #fef2f2;
    --color-danger-500: #ef4444;
    --color-danger-600: #dc2626;
    --color-info-50: #eff6ff;
    --color-info-500: #3b82f6;
    
    /* Accent Colors */
    --color-purple-500: #8b5cf6;
    --color-pink-500: #ec4899;
    --color-teal-500: #14b8a6;
    --color-orange-500: #f97316;
    
    /* Typography */
    --font-family-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;
    
    /* Spacing */
    --spacing-0: 0;
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    --spacing-20: 5rem;
    --spacing-24: 6rem;
    --spacing-32: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
    
    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal-backdrop: 400;
    --z-modal: 500;
    --z-tooltip: 600;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: 1.5rem;
    
    /* Header */
    --header-height: 80px;
}

/* ==========================================================================
   2. Reset & Base
   ========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-relaxed);
    color: var(--color-gray-700);
    background-color: var(--color-white);
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
    height: auto;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

button {
    cursor: pointer;
    background: none;
    border: none;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

/* ==========================================================================
   3. Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-gray-900);
}

h1 { font-size: var(--font-size-5xl); }
h2 { font-size: var(--font-size-4xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
    margin-bottom: var(--spacing-4);
}

p:last-child {
    margin-bottom: 0;
}

strong {
    font-weight: var(--font-weight-semibold);
}

.text-success { color: var(--color-success-500); }
.text-warning { color: var(--color-warning-500); }
.text-danger { color: var(--color-danger-500); }

/* ==========================================================================
   4. Layout
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.site-main {
    min-height: 100vh;
}

/* ==========================================================================
   5. Components - Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-align: center;
    white-space: nowrap;
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn svg {
    width: 1em;
    height: 1em;
}

.btn--primary {
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    color: var(--color-white);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.btn--primary:hover {
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-700));
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    transform: translateY(-1px);
}

.btn--outline {
    background: transparent;
    color: var(--color-gray-700);
    border: 1px solid var(--color-gray-300);
}

.btn--outline:hover {
    background: var(--color-gray-50);
    border-color: var(--color-gray-400);
}

.btn--white {
    background: var(--color-white);
    color: var(--color-primary-600);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn--white:hover {
    background: var(--color-gray-50);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.btn--sm {
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-xs);
}

.btn--lg {
    padding: var(--spacing-4) var(--spacing-8);
    font-size: var(--font-size-base);
}

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

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ==========================================================================
   5. Components - Badges
   ========================================================================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border-radius: var(--radius-full);
    background: var(--color-gray-100);
    color: var(--color-gray-600);
}

.badge--sm {
    padding: 2px 6px;
    font-size: 0.625rem;
}

.badge--primary {
    background: var(--color-primary-100);
    color: var(--color-primary-700);
}

/* ==========================================================================
   6. Header
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-gray-100);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
}

.site-header > .container {
    height: 100%;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.site-header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

.site-header__logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    border-radius: var(--radius-lg);
    color: var(--color-white);
}

.site-header__logo-icon svg {
    width: 20px;
    height: 20px;
}

.site-header__logo .custom-logo {
    height: 40px;
    width: auto;
}

/* Navigation */
.site-nav {
    display: none;
}

/* Mobile Menu */
@media (max-width: 1023px) {
    .site-nav.site-nav--open {
        display: block;
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        height: calc(100dvh - var(--header-height));
        background: var(--color-white);
        z-index: 9999;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: var(--spacing-6);
        animation: slideDown 0.3s ease;
    }

    /* Prevent body scroll when menu is open */
    body.menu-open {
        overflow: hidden;
        position: fixed;
        width: 100%;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }

    .site-nav--open .site-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-2);
    }

    .site-nav--open .site-nav__link {
        padding: var(--spacing-4);
        font-size: var(--font-size-lg);
        border-radius: var(--radius-lg);
    }

    .site-nav--open .site-nav__dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding: 0;
        margin-top: var(--spacing-2);
    }

    .site-nav--open .site-nav__dropdown-inner {
        padding: var(--spacing-2);
        background: var(--color-gray-50);
        border-radius: var(--radius-lg);
    }
}

@media (min-width: 1024px) {
    .site-nav {
        display: block;
    }
}

.site-nav__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.site-nav__item {
    position: relative;
}

.site-nav__link {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.site-nav__link:hover {
    color: var(--color-gray-900);
    background: var(--color-gray-50);
}

.site-nav__arrow {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.site-nav__item--has-dropdown:hover .site-nav__arrow {
    transform: rotate(180deg);
}

/* Dropdown */
.site-nav__dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding-top: var(--spacing-2);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
}

.site-nav__item--has-dropdown:hover .site-nav__dropdown {
    opacity: 1;
    visibility: visible;
}

.site-nav__dropdown-inner {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-gray-100);
    padding: var(--spacing-2);
    min-width: 320px;
}

.site-nav__dropdown-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
    padding: var(--spacing-3);
    border-radius: var(--radius-lg);
    transition: background var(--transition-fast);
}

.site-nav__dropdown-item:hover {
    background: var(--color-gray-50);
}

.site-nav__dropdown-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-gray-100);
    border-radius: var(--radius-lg);
    flex-shrink: 0;
}

.site-nav__dropdown-icon svg {
    width: 20px;
    height: 20px;
}

.site-nav__dropdown-content {
    flex: 1;
}

.site-nav__dropdown-title {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
    margin-bottom: 2px;
}

.site-nav__dropdown-desc {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-500);
}

.site-nav__dropdown-badge {
    font-size: var(--font-size-xs);
    padding: 2px 8px;
    background: var(--color-warning-50);
    color: var(--color-warning-600);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

/* Header Actions */
.site-header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.site-header__login {
    display: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

.site-header__login:hover {
    color: var(--color-gray-900);
}

@media (min-width: 768px) {
    .site-header__login {
        display: block;
    }
}

/* Mobile Toggle */
.site-header__toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 8px;
}

.site-header__toggle-line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-gray-600);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

@media (min-width: 1024px) {
    .site-header__toggle {
        display: none;
    }
}

/* ==========================================================================
   7. Hero
   ========================================================================== */
.hero {
    position: relative;
    padding-top: calc(var(--header-height) + var(--spacing-16));
    padding-bottom: var(--spacing-16);
    overflow: hidden;
}

@media (min-width: 768px) {
    .hero {
        padding-top: calc(var(--header-height) + var(--spacing-24));
        padding-bottom: var(--spacing-24);
    }
}

/* Hero Background */
.hero__bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero__bg-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, 
        var(--color-gray-50) 0%, 
        var(--color-white) 50%,
        var(--color-primary-50) 100%
    );
}

.hero__bg-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(59, 130, 246, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(59, 130, 246, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
}

.hero__bg-glow {
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 100%;
    background: radial-gradient(ellipse, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
    pointer-events: none;
}

/* Hero Inner */
.hero__inner {
    display: grid;
    gap: var(--spacing-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .hero__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-16);
    }
}

/* Hero Content */
.hero__content {
    text-align: center;
}

@media (min-width: 1024px) {
    .hero__content {
        text-align: left;
    }
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--color-primary-50);
    border: 1px solid var(--color-primary-100);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    color: var(--color-primary-700);
    margin-bottom: var(--spacing-6);
}

.hero__badge-icon {
    display: flex;
    color: var(--color-primary-500);
}

.hero__badge-icon svg {
    width: 16px;
    height: 16px;
}

.hero__title {
    font-size: var(--font-size-4xl);
    font-weight: var(--font-weight-extrabold);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-6);
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    .hero__title {
        font-size: var(--font-size-5xl);
    }
}

@media (min-width: 1024px) {
    .hero__title {
        font-size: var(--font-size-6xl);
    }
}

.hero__title-accent {
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-700));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-8);
    line-height: var(--line-height-relaxed);
}

@media (min-width: 768px) {
    .hero__subtitle {
        font-size: var(--font-size-xl);
    }
}

/* Hero Actions */
.hero__actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-8);
}

@media (min-width: 640px) {
    .hero__actions {
        flex-direction: row;
        justify-content: center;
    }
}

@media (min-width: 1024px) {
    .hero__actions {
        justify-content: flex-start;
    }
}

/* Hero Trust */
.hero__trust {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    justify-content: center;
}

@media (min-width: 1024px) {
    .hero__trust {
        justify-content: flex-start;
    }
}

.hero__trust-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.hero__trust-item svg {
    width: 16px;
    height: 16px;
    color: var(--color-success-500);
}

/* Hero Visual */
.hero__visual {
    display: none;
}

@media (min-width: 1024px) {
    .hero__visual {
        display: block;
    }
}

.hero__visual-wrapper {
    position: relative;
}

.hero__visual-main {
    width: 100%;
    max-width: 600px;
    height: auto;
}

/* Floating Cards */
.hero__visual-float {
    position: absolute;
    animation: float 6s ease-in-out infinite;
}

.hero__visual-float--1 {
    top: 10%;
    left: -10%;
    animation-delay: 0s;
}

.hero__visual-float--2 {
    bottom: 20%;
    left: -15%;
    animation-delay: 2s;
}

.hero__visual-float--3 {
    top: 5%;
    right: -10%;
    animation-delay: 4s;
}

.hero__visual-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-sm);
    white-space: nowrap;
}

.hero__visual-card svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary-500);
}

.hero__visual-card strong {
    font-weight: var(--font-weight-semibold);
}

.hero__visual-card--success {
    background: var(--color-success-500);
    color: var(--color-white);
}

.hero__visual-card--success .hero__visual-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
}

.hero__visual-card--success svg {
    width: 14px;
    height: 14px;
    color: var(--color-white);
}

/* ==========================================================================
   8. Stats
   ========================================================================== */
.stats {
    padding: var(--spacing-12) 0;
    background: var(--color-gray-900);
}

.stats__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-8);
    text-align: center;
}

@media (min-width: 768px) {
    .stats__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.stats__item {
    position: relative;
}

.stats__item:not(:last-child)::after {
    display: none;
}

@media (min-width: 768px) {
    .stats__item:not(:last-child)::after {
        content: '';
        position: absolute;
        right: 0;
        top: 50%;
        transform: translateY(-50%);
        width: 1px;
        height: 40px;
        background: var(--color-gray-700);
        display: block;
    }
}

.stats__number {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-1);
}

@media (min-width: 768px) {
    .stats__number {
        font-size: var(--font-size-4xl);
    }
}

.stats__label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
}

/* ==========================================================================
   9. Sections (Common)
   ========================================================================== */
.section {
    padding: var(--spacing-16) 0;
}

@media (min-width: 768px) {
    .section {
        padding: var(--spacing-24) 0;
    }
}

.section__header {
    margin-bottom: var(--spacing-12);
}

.section__header--center {
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.section__label {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-600);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-3);
}

.section__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-4);
}

@media (min-width: 768px) {
    .section__title {
        font-size: var(--font-size-4xl);
    }
}

.section__subtitle,
.section__text {
    font-size: var(--font-size-lg);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   Problem Section
   ========================================================================== */
.problem {
    background: var(--color-gray-50);
}

.problem__grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .problem__grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-8);
    }
}

.problem__card {
    padding: var(--spacing-8);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
}

.problem__card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-4);
}

.problem__card-icon svg {
    width: 28px;
    height: 28px;
    overflow: visible;
}

.problem__card-icon--danger {
    background: var(--color-danger-50);
    color: var(--color-danger-500);
}

.problem__card-icon--warning {
    background: var(--color-warning-50);
    color: var(--color-warning-500);
}

.problem__card-icon--info {
    background: var(--color-info-50);
    color: var(--color-info-500);
}

.problem__card-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-3);
}

.problem__card-text {
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   Solution Section
   ========================================================================== */
.solution__inner {
    display: grid;
    gap: var(--spacing-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .solution__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-16);
    }
}

.solution__list {
    margin: var(--spacing-8) 0;
}

.solution__list-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) 0;
    font-size: var(--font-size-lg);
    color: var(--color-gray-700);
}

.solution__list-item svg {
    width: 20px;
    height: 20px;
    color: var(--color-success-500);
    flex-shrink: 0;
}

.solution__image {
    width: 100%;
    height: auto;
}

/* ==========================================================================
   10. Products
   ========================================================================== */
.products {
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
}

.products__grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .products__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .products__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.product-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-8);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-gray-100);
    transition: all var(--transition-normal);
}

.product-card:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.product-card--coming-soon {
    opacity: 0.85;
}

.product-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-4);
}

.product-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--product-color), color-mix(in srgb, var(--product-color) 80%, black));
    border-radius: var(--radius-xl);
    color: var(--color-white);
}

.product-card__icon svg {
    width: 28px;
    height: 28px;
}

.product-card__badge {
    font-size: var(--font-size-xs);
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--color-warning-50);
    color: var(--color-warning-600);
    border-radius: var(--radius-full);
}

.product-card__name {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-1);
}

.product-card__tagline {
    font-size: var(--font-size-sm);
    color: var(--color-primary-600);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-3);
}

.product-card__description {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-6);
    flex: 1;
}

.product-card__features {
    margin-bottom: var(--spacing-6);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-gray-100);
}

.product-card__features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
}

.product-card__features svg {
    width: 16px;
    height: 16px;
    color: var(--color-success-500);
    flex-shrink: 0;
}

.product-card__footer {
    margin-top: auto;
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--color-gray-100);
}

.product-card__price {
    margin-bottom: var(--spacing-4);
}

.product-card__price-value {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray-900);
}

.product-card__price-period {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.product-card__coming-soon-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-4);
}

/* ==========================================================================
   11. Features
   ========================================================================== */
.features {
    background: var(--color-gray-900);
    color: var(--color-white);
}

.features .section__label {
    color: var(--color-primary-400);
}

.features .section__title {
    color: var(--color-white);
}

.features__grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .features__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-card {
    padding: var(--spacing-6);
    background: var(--color-gray-800);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-gray-700);
    transition: all var(--transition-normal);
}

.feature-card:hover {
    background: var(--color-gray-750);
    border-color: var(--color-gray-600);
    transform: translateY(-2px);
}

.feature-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
}

.feature-card__icon svg {
    width: 24px;
    height: 24px;
}

.feature-card__icon--blue {
    background: rgba(59, 130, 246, 0.2);
    color: var(--color-primary-400);
}

.feature-card__icon--green {
    background: rgba(16, 185, 129, 0.2);
    color: var(--color-success-500);
}

.feature-card__icon--purple {
    background: rgba(139, 92, 246, 0.2);
    color: var(--color-purple-500);
}

.feature-card__icon--orange {
    background: rgba(249, 115, 22, 0.2);
    color: var(--color-orange-500);
}

.feature-card__icon--teal {
    background: rgba(20, 184, 166, 0.2);
    color: var(--color-teal-500);
}

.feature-card__icon--pink {
    background: rgba(236, 72, 153, 0.2);
    color: var(--color-pink-500);
}

.feature-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    margin-bottom: var(--spacing-2);
}

.feature-card__text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    line-height: var(--line-height-relaxed);
}

.features__cta {
    text-align: center;
    margin-top: var(--spacing-12);
}

/* ==========================================================================
   12. Guarantees
   ========================================================================== */
.guarantees__grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 640px) {
    .guarantees__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .guarantees__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.guarantee-card {
    text-align: center;
    padding: var(--spacing-8);
}

.guarantee-card__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-4);
    background: var(--color-primary-50);
    border-radius: var(--radius-full);
    color: var(--color-primary-600);
}

.guarantee-card__icon svg {
    width: 28px;
    height: 28px;
}

.guarantee-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
}

.guarantee-card__text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* ==========================================================================
   13. Testimonials
   ========================================================================== */
.testimonials {
    background: var(--color-gray-50);
}

.testimonials__grid {
    display: grid;
    gap: var(--spacing-6);
}

@media (min-width: 768px) {
    .testimonials__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .testimonials__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.testimonial-card {
    padding: var(--spacing-8);
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-gray-100);
}

.testimonial-card__rating {
    display: flex;
    gap: 2px;
    margin-bottom: var(--spacing-4);
    color: var(--color-warning-500);
}

.testimonial-card__rating svg {
    width: 18px;
    height: 18px;
}

.testimonial-card__quote {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-6);
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.testimonial-card__avatar {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    object-fit: cover;
}

.testimonial-card__avatar-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--color-primary-100);
    color: var(--color-primary-600);
    flex-shrink: 0;
}

.testimonial-card__avatar-icon svg {
    width: 24px;
    height: 24px;
}

.testimonial-card__author-name {
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-900);
}

.testimonial-card__author-role {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ==========================================================================
   14. Agency
   ========================================================================== */
.agency__inner {
    display: grid;
    gap: var(--spacing-12);
    align-items: center;
}

@media (min-width: 1024px) {
    .agency__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-16);
    }
}

.agency__image {
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.agency__features {
    margin: var(--spacing-8) 0;
}

.agency__feature {
    display: flex;
    gap: var(--spacing-4);
    padding: var(--spacing-4) 0;
}

.agency__feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-primary-50);
    border-radius: var(--radius-lg);
    color: var(--color-primary-600);
    flex-shrink: 0;
}

.agency__feature-icon svg {
    width: 22px;
    height: 22px;
}

.agency__feature-content h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-1);
}

.agency__feature-content p {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* ==========================================================================
   15. FAQ
   ========================================================================== */
.faq__list {
    max-width: 800px;
    margin: 0 auto;
}

.faq__item {
    border-bottom: 1px solid var(--color-gray-200);
}

.faq__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-4);
    width: 100%;
    padding: var(--spacing-6) 0;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-900);
    text-align: left;
    cursor: pointer;
    list-style: none;
}

.faq__question::-webkit-details-marker {
    display: none;
}

.faq__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    color: var(--color-gray-400);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.faq__icon svg {
    width: 20px;
    height: 20px;
}

.faq__item[open] .faq__icon {
    transform: rotate(45deg);
}

/* Button style FAQ (used on FAQ page) */
.faq__item .faq__question svg {
    width: 20px;
    height: 20px;
    color: var(--color-gray-400);
    transition: transform var(--transition-normal);
    flex-shrink: 0;
}

.faq__item.is-open .faq__question svg {
    transform: rotate(90deg);
}

.faq__item .faq__answer {
    display: none;
}

.faq__item.is-open .faq__answer {
    display: block;
}

.faq__answer {
    padding-bottom: var(--spacing-6);
    color: var(--color-gray-600);
    line-height: var(--line-height-relaxed);
}

.faq__cta {
    text-align: center;
    margin-top: var(--spacing-12);
}

.faq__cta p {
    margin-bottom: var(--spacing-4);
    color: var(--color-gray-600);
}

/* ==========================================================================
   16. Footer
   ========================================================================== */

/* Footer CTA */
.footer-cta {
    background: linear-gradient(135deg, var(--color-primary-600), var(--color-primary-800));
    padding: var(--spacing-16) 0;
}

.footer-cta__inner {
    display: grid;
    gap: var(--spacing-8);
    align-items: center;
}

@media (min-width: 1024px) {
    .footer-cta__inner {
        grid-template-columns: 1fr auto;
    }
}

.footer-cta__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    margin-bottom: var(--spacing-4);
}

@media (min-width: 768px) {
    .footer-cta__title {
        font-size: var(--font-size-4xl);
    }
}

.footer-cta__text {
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-lg);
}

.footer-cta__actions {
    text-align: center;
}

@media (min-width: 1024px) {
    .footer-cta__actions {
        text-align: right;
    }
}

.footer-cta__link {
    display: block;
    margin-top: var(--spacing-4);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-cta__link:hover {
    color: var(--color-white);
}

/* Footer Main */
.footer-main {
    background: var(--color-gray-900);
    padding: var(--spacing-16) 0;
}

.footer-main__grid {
    display: grid;
    gap: var(--spacing-10);
}

@media (min-width: 640px) {
    .footer-main__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-main__grid {
        grid-template-columns: 2fr repeat(3, 1fr);
        gap: var(--spacing-8);
        justify-content: end;
    }
}

/* Footer Brand */
.footer-main__brand {
    grid-column: 1 / -1;
}

@media (min-width: 1024px) {
    .footer-main__brand {
        grid-column: 1;
    }
}

.footer-main__logo {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.footer-main__logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-600));
    border-radius: var(--radius-lg);
    color: var(--color-white);
}

.footer-main__logo-icon svg {
    width: 20px;
    height: 20px;
}

.footer-main__logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.footer-main__tagline {
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-6);
    font-size: var(--font-size-sm);
}

.footer-main__social {
    display: flex;
    gap: var(--spacing-3);
}

.footer-main__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-gray-800);
    border-radius: var(--radius-lg);
    color: var(--color-gray-400);
    transition: all var(--transition-fast);
}

.footer-main__social-link:hover {
    background: var(--color-gray-700);
    color: var(--color-white);
}

.footer-main__social-link svg {
    width: 18px;
    height: 18px;
}

/* Footer Columns */
.footer-main__heading {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-4);
}

.footer-main__list a {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    transition: color var(--transition-fast);
}

.footer-main__list a:hover {
    color: var(--color-white);
}

/* Newsletter */
.footer-main__column--newsletter {
    grid-column: 1 / -1;
}

@media (min-width: 1024px) {
    .footer-main__column--newsletter {
        grid-column: auto;
    }
}

.footer-main__newsletter-text {
    font-size: var(--font-size-sm);
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-4);
}

.footer-main__newsletter-form {
    display: flex;
    gap: var(--spacing-2);
}

.footer-main__newsletter-input {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--color-gray-800);
    border: 1px solid var(--color-gray-700);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    font-size: var(--font-size-sm);
}

.footer-main__newsletter-input::placeholder {
    color: var(--color-gray-500);
}

.footer-main__newsletter-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
}

.footer-main__newsletter-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--color-primary-600);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    transition: background var(--transition-fast);
}

.footer-main__newsletter-btn:hover {
    background: var(--color-primary-500);
}

.footer-main__newsletter-btn svg {
    width: 18px;
    height: 18px;
}

/* Footer Bottom */
.footer-bottom {
    background: var(--color-gray-950);
    padding: var(--spacing-6) 0;
}

.footer-bottom__inner {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    align-items: center;
    text-align: center;
}

@media (min-width: 768px) {
    .footer-bottom__inner {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-bottom__copyright {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

.footer-bottom__legal {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-4);
    justify-content: center;
}

.footer-bottom__legal a {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.footer-bottom__legal a:hover {
    color: var(--color-gray-300);
}

/* ==========================================================================
   17. Utilities
   ========================================================================== */
.hide-mobile {
    display: none;
}

@media (min-width: 768px) {
    .hide-mobile {
        display: inline;
    }
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================================================================
   18. Animations
   ========================================================================== */
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* ==========================================================================
   19. Responsive Adjustments
   ========================================================================== */
@media (max-width: 767px) {
    :root {
        --font-size-5xl: 2.25rem;
        --font-size-6xl: 2.75rem;
    }
}