/* ================================
   CSS Variables & Design System
   ================================ */
:root {
    /* Color Palette */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --dark-gradient: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);

    --primary-color: #667eea;
    --secondary-color: #764ba2;
    --accent-color: #4facfe;
    --text-dark: #1a202c;
    --text-medium: #4a5568;
    --text-light: #718096;
    --bg-light: #f7fafc;
    --bg-white: #ffffff;
    --border-color: #e2e8f0;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;

    /* Typography */
    --font-sans: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --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;

    /* 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 -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
}

/* ================================
   Global Styles & Reset
   ================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--bg-light);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ================================
   Scroll Progress Bar
   ================================ */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 4px;
    background: var(--primary-gradient);
    width: 0%;
    z-index: 9999;
    transition: width 0.1s ease;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.5);
}

/* ================================
   Hero Section
   ================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.hero-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s ease-in-out infinite;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(245, 87, 108, 0.8) 0%, transparent 70%);
    top: -10%;
    left: -10%;
    animation-delay: 0s;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(79, 172, 254, 0.8) 0%, transparent 70%);
    top: 40%;
    right: -5%;
    animation-delay: 7s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(240, 147, 251, 0.6) 0%, transparent 70%);
    bottom: -10%;
    left: 50%;
    animation-delay: 14s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(30px, -30px) scale(1.1);
    }
    66% {
        transform: translate(-20px, 20px) scale(0.9);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: var(--spacing-2xl) 0;
    animation: fadeInUp 1s ease;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease 0.2s backwards;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.title-line {
    display: block;
    animation: fadeInUp 1s ease 0.4s backwards;
}

.gradient-text {
    background: linear-gradient(to right, #fff 0%, #f0f9ff 50%, #fff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s ease 0.6s backwards, shimmer 3s ease-in-out infinite;
    background-size: 200% auto;
}

@keyframes shimmer {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 100% center;
    }
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    font-weight: 300;
    opacity: 0.95;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
    animation: fadeInUp 1s ease 0.8s backwards;
}

.hero-cta {
    animation: fadeInUp 1s ease 1s backwards;
}

/* ================================
   Buttons
   ================================ */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    background: white;
    color: var(--primary-color);
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    box-shadow: var(--shadow-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
    border-radius: inherit;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2xl);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary:hover {
    color: white;
}

.btn-primary span,
.btn-primary svg {
    position: relative;
    z-index: 1;
}

.btn-arrow {
    transition: transform var(--transition-base);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: var(--font-size-xl);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 0.875rem 1.75rem;
    background: rgba(102, 126, 234, 0.1);
    color: var(--primary-color);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.7);
    }
    50% {
        box-shadow: 0 0 0 20px rgba(255, 255, 255, 0);
    }
}

/* 特別顯眼的按鈕樣式 */
.btn-highlight {
    position: relative;
    animation: highlight-pulse 2s ease-in-out infinite, gentle-bounce 3s ease-in-out infinite;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.6), 0 10px 40px rgba(0, 0, 0, 0.3) !important;
    transform: scale(1.05);
}

.btn-highlight::after {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(45deg, #ffd700, #ff6b6b, #4ecdc4, #ffd700);
    background-size: 300% 300%;
    border-radius: inherit;
    z-index: -1;
    animation: gradient-shift 3s ease infinite;
    opacity: 0.8;
    filter: blur(8px);
}

@keyframes highlight-pulse {
    0%, 100% {
        box-shadow: 0 0 30px rgba(255, 255, 255, 0.6), 0 10px 40px rgba(0, 0, 0, 0.3), 0 0 60px rgba(255, 215, 0, 0.4);
    }
    50% {
        box-shadow: 0 0 50px rgba(255, 255, 255, 0.9), 0 15px 50px rgba(0, 0, 0, 0.4), 0 0 80px rgba(255, 215, 0, 0.6);
    }
}

@keyframes gentle-bounce {
    0%, 100% {
        transform: scale(1.05) translateY(0);
    }
    50% {
        transform: scale(1.08) translateY(-5px);
    }
}

@keyframes gradient-shift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

/* ================================
   Scroll Indicator
   ================================ */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    animation: fadeInUp 1s ease 1.5s backwards;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.8);
    border-radius: 15px;
    display: flex;
    justify-content: center;
    padding-top: 8px;
}

.wheel {
    width: 3px;
    height: 8px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 2px;
    animation: scroll 1.5s ease-in-out infinite;
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateY(12px);
    }
}

/* ================================
   Section Common Styles
   ================================ */
section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--primary-gradient);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.02em;
}

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

/* ================================
   Problem Section
   ================================ */
.section-problem {
    background: white;
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.problem-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.problem-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.problem-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: transparent;
}

.problem-card:hover::before {
    transform: scaleX(1);
}

.problem-icon {
    margin-bottom: var(--spacing-md);
}

.icon-circle {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    color: white;
    transition: all var(--transition-base);
}

.problem-card:hover .icon-circle {
    transform: scale(1.1) rotate(5deg);
}

.problem-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.problem-desc {
    color: var(--text-medium);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.problem-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-light);
}

.problem-cta {
    text-align: center;
    margin-top: var(--spacing-3xl);
}

.cta-text {
    font-size: var(--font-size-xl);
    color: var(--text-medium);
    margin-bottom: var(--spacing-md);
}

.cta-text strong {
    color: var(--primary-color);
    font-weight: 700;
}

.cta-arrow {
    font-size: var(--font-size-4xl);
    color: var(--primary-color);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

/* ================================
   Solution Section
   ================================ */
.section-solution {
    background: var(--bg-light);
    position: relative;
    overflow: hidden;
}

.solution-background {
    position: absolute;
    inset: 0;
    z-index: 0;
    opacity: 0.03;
}

.grid-pattern {
    width: 100%;
    height: 100%;
    background-image:
        linear-gradient(var(--border-color) 1px, transparent 1px),
        linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
}

.solution-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 1;
}

.showcase-image {
    position: relative;
}

.image-placeholder {
    aspect-ratio: 4/3;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: var(--radius-2xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
    transition: all var(--transition-base);
}

.image-placeholder:hover {
    border-color: var(--primary-color);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.15) 0%, rgba(118, 75, 162, 0.15) 100%);
}

.placeholder-icon {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    opacity: 0.6;
}

.image-placeholder p {
    color: var(--text-light);
    font-size: var(--font-size-sm);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.feature-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    font-size: var(--font-size-3xl);
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-gradient);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.feature-text h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.feature-text p {
    color: var(--text-medium);
    line-height: 1.6;
}

/* ================================
   Details Modal (IG-Style Slider)
   ================================ */
.details-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.details-modal:not(.hidden) {
    opacity: 1;
    visibility: visible;
}

/* Modal Backdrop - Frosted Glass Effect */
.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(26, 32, 44, 0.7);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Modal Container */
.modal-container {
    position: relative;
    width: 90%;
    max-width: 900px;
    max-height: 85vh;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-radius: var(--radius-2xl);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(40px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Close Button */
.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 10;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    border: none;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: rotate(90deg) scale(1.1);
}

/* Slides Wrapper */
.modal-slides-wrapper {
    width: 100%;
    height: calc(85vh - 80px); /* Account for padding and controls */
    max-height: calc(85vh - 80px);
    overflow: hidden;
    position: relative;
}

.modal-slides {
    display: flex;
    height: 100%;
    min-height: 100%;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: transform;
}

.modal-slide {
    min-width: 100%;
    width: 100%;
    height: 100%;
    min-height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    padding: var(--spacing-2xl) var(--spacing-xl);
    padding-bottom: 100px; /* Space for pagination */
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch; /* Smooth scrolling on iOS */
}

/* Scroll indicator shadow */
.modal-slide::before {
    content: '';
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: linear-gradient(to bottom, rgba(255,255,255,0.95), transparent);
    pointer-events: none;
    z-index: 1;
}

/* Custom Scrollbar */
.modal-slide::-webkit-scrollbar {
    width: 8px;
}

.modal-slide::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.05);
    border-radius: 10px;
}

.modal-slide::-webkit-scrollbar-thumb {
    background: var(--primary-gradient);
    border-radius: 10px;
}

.modal-slide::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-gradient);
}

/* Slide Content */
.slide-content {
    max-width: 800px;
    margin: 0 auto;
}

/* Modal Slide Images - Responsive Sizing */
.slide-image img {
    max-width: 70%;
    height: auto;
    margin: 0 auto;
    display: block;
    transition: all var(--transition-base);
}

.slide-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.slide-number {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 800;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    flex-shrink: 0;
}

.slide-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--text-dark);
    margin: 0;
}

.slide-image {
    margin-bottom: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.slide-image .image-placeholder {
    max-height: 250px;
}

.slide-text {
    color: var(--text-medium);
}

.slide-intro {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-lg);
    font-weight: 500;
}

/* Feature Boxes */
.feature-boxes {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.feature-box {
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.feature-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-box-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
}

.feature-box h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.feature-box p {
    color: var(--text-medium);
    line-height: 1.6;
    font-size: var(--font-size-sm);
}

/* Highlight Box */
.highlight-box {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    border-radius: var(--radius-xl);
    border-left: 4px solid var(--primary-color);
}

.highlight-icon {
    font-size: var(--font-size-3xl);
    flex-shrink: 0;
}

.highlight-box p {
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.7;
    margin: 0;
}

/* Steps Container */
.steps-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.step-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.step-card:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-color);
}

.step-card.alert-card {
    background: linear-gradient(135deg, rgba(245, 87, 108, 0.1) 0%, rgba(240, 147, 251, 0.1) 100%);
    border-color: rgba(245, 87, 108, 0.3);
}

.step-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: var(--shadow-md);
}

.step-icon.alert-icon {
    background: var(--secondary-gradient);
}

.step-num {
    color: white;
    font-size: var(--font-size-xl);
    font-weight: 800;
}

.step-info h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.step-info p {
    color: var(--text-medium);
    line-height: 1.6;
    margin: 0;
}

.step-arrow {
    text-align: center;
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    padding: var(--spacing-xs) 0;
}

/* Advantages Grid */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.advantage-card {
    padding: var(--spacing-lg);
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
}

.advantage-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.advantage-icon {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-sm);
}

.advantage-card h4 {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: var(--spacing-xs);
}

.advantage-card > p {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.advantage-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.advantage-card ul li {
    color: var(--text-medium);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.advantage-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

/* Navigation Arrows */
.modal-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(102, 126, 234, 0.2);
    color: var(--primary-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    z-index: 10;
}

.modal-nav:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-50%) scale(1.1);
    box-shadow: var(--shadow-lg);
}

.modal-nav:active {
    transform: translateY(-50%) scale(0.95);
}

.modal-nav-prev {
    left: 20px;
}

.modal-nav-next {
    right: 20px;
}

.modal-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    pointer-events: none;
}

/* Pagination Dots */
.modal-pagination {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 10;
}

.pagination-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(102, 126, 234, 0.3);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
}

.pagination-dot:hover {
    background: rgba(102, 126, 234, 0.6);
    transform: scale(1.2);
}

.pagination-dot.active {
    width: 24px;
    border-radius: 5px;
    background: var(--primary-gradient);
}

/* Page Counter */
.modal-counter {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    color: white;
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    z-index: 10;
}

.current-page {
    color: white;
    font-weight: 700;
}

.total-pages {
    opacity: 0.7;
}

/* ================================
   Feedback Section
   ================================ */
.section-feedback {
    background: var(--bg-light);
    position: relative;
    overflow: hidden;
}

.feedback-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.orb-4 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.15) 0%, transparent 70%);
    top: -10%;
    left: -10%;
}

.orb-5 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(118, 75, 162, 0.15) 0%, transparent 70%);
    bottom: -10%;
    right: -10%;
}

.feedback-form-wrapper {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

#feedback-form {
    background: white;
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
}

.form-label svg {
    color: var(--primary-color);
}

input[type="email"],
select {
    width: 100%;
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-base);
    font-family: var(--font-sans);
    transition: all var(--transition-base);
    background: var(--bg-light);
}

input[type="email"]:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    background: white;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

.btn-submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 1.25rem;
    background: var(--primary-gradient);
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 700;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-2xl);
}

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

.btn-icon {
    transition: transform var(--transition-base);
}

.btn-submit:hover .btn-icon {
    transform: translateX(4px);
}

.form-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
    font-weight: 600;
}

.form-message.success {
    background: rgba(72, 187, 120, 0.1);
    color: #2f855a;
    border: 1px solid rgba(72, 187, 120, 0.3);
}

.form-message.error {
    background: rgba(245, 87, 108, 0.1);
    color: #c53030;
    border: 1px solid rgba(245, 87, 108, 0.3);
}

.feedback-benefits {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.benefit-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.benefit-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-md);
}

.benefit-item svg {
    color: #48bb78;
    flex-shrink: 0;
}

.benefit-item span {
    color: var(--text-medium);
    font-weight: 500;
}

/* ================================
   Footer
   ================================ */
.footer {
    background: var(--text-dark);
    color: white;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-text {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.footer-subtext {
    font-size: var(--font-size-sm);
    opacity: 0.6;
}

/* ================================
   Utility Classes
   ================================ */
.hidden {
    display: none !important;
}

/* Fade In Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ================================
   Responsive Design
   ================================ */
@media (max-width: 1024px) {
    .solution-showcase {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-3xl: 4rem;
        --spacing-2xl: 3rem;
    }

    .hero {
        min-height: 90vh;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .problem-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .detail-block {
        padding-left: 0;
        padding-top: 60px;
    }

    .detail-number {
        left: 50%;
        transform: translateX(-50%);
    }

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

@media (max-width: 480px) {
    .container {
        width: 95%;
    }

    .btn-primary,
    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: var(--font-size-base);
    }

    .hero-subtitle {
        font-size: var(--font-size-base);
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
    }

    /* Modal Responsive */
    .modal-container {
        width: 95%;
        max-height: 90vh;
    }

    .modal-slide {
        padding: var(--spacing-lg) var(--spacing-md);
        padding-bottom: 70px;
    }

    .slide-title {
        font-size: var(--font-size-xl);
    }

    .modal-nav {
        width: 40px;
        height: 40px;
    }

    .modal-nav-prev {
        left: 10px;
    }

    .modal-nav-next {
        right: 10px;
    }

    .feature-boxes,
    .advantages-grid {
        grid-template-columns: 1fr;
    }

    .modal-close {
        width: 40px;
        height: 40px;
        top: 15px;
        right: 15px;
    }

    .modal-counter {
        font-size: var(--font-size-xs);
        padding: 4px 12px;
    }

    /* Modal images on mobile - make them larger */
    .slide-image img {
        max-width: 90%;
    }
}