:root {
    /* Primary palette - sophisticated purple */
    --primary-50: #f5f3ff;
    --primary-100: #ede9fe;
    --primary-200: #ddd6fe;
    --primary-300: #c4b5fd;
    --primary-400: #a78bfa;
    --primary-500: #8b5cf6;
    --primary-600: #7c3aed;
    --primary-700: #6d28d9;
    --primary-800: #5b21b6;
    --primary-900: #4c1d95;
    
    /* Secondary palette - teal accents */
    --secondary-400: #2dd4bf;
    --secondary-500: #14b8a6;
    --secondary-600: #0d9488;
    
    /* Neutral palette */
    --neutral-50: #fafafa;
    --neutral-100: #f5f5f5;
    --neutral-200: #e5e5e5;
    --neutral-300: #d4d4d4;
    --neutral-400: #a3a3a3;
    --neutral-500: #737373;
    --neutral-600: #525252;
    --neutral-700: #404040;
    --neutral-800: #262626;
    --neutral-900: #171717;
    
    /* Accent colors */
    --accent-pink: #ec4899;
    --accent-rose: #f43f5e;
    --accent-amber: #f59e0b;
    --accent-gold: #fbbf24;
    --accent-emerald: #10b981;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #7c3aed, #4c1d95);
    --gradient-secondary: linear-gradient(135deg, #2dd4bf, #0d9488);
    --gradient-accent: linear-gradient(135deg, #ec4899, #f43f5e);
    --gradient-gold: linear-gradient(135deg, #fbbf24, #d97706);
    --gradient-dark: linear-gradient(135deg, #1e1b4b, #0f172a);
    --gradient-blue-purple: linear-gradient(135deg, #3b82f6, #8b5cf6);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 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-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.06);
    --shadow-colored: 0 10px 25px -3px rgba(124, 58, 237, 0.25);
    
    /* Glass effect */
    --glass-background: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Dark glass effect */
    --dark-glass-background: rgba(23, 23, 23, 0.7);
    --dark-glass-border: rgba(255, 255, 255, 0.08);
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    color: var(--neutral-800);
    background-color: var(--neutral-50);
    overflow-x: hidden;
    line-height: 1.7;
    font-weight: 400;
}

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

::-webkit-scrollbar-track {
    background: var(--neutral-100);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-400);
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-500);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.display-text {
    font-weight: 800;
    letter-spacing: -0.03em;
}

.subtitle {
    font-weight: 400;
    color: var(--neutral-600);
}

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    /* overflow: hidden; */
    letter-spacing: 0.01em;
}

/* .btn::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.1) 100%
    );
    transform: rotate(30deg);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.btn:hover::after {
    opacity: 1;
    transform: rotate(30deg) translateX(10%);
} */

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    color: white;
    box-shadow: 0 4px 12px rgba(109, 40, 217, 0.2);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-700), var(--primary-900));
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(109, 40, 217, 0.3);
}

.btn-secondary {
    background: var(--gradient-secondary);
    border: none;
    color: white;
    box-shadow: 0 4px 12px rgba(20, 184, 166, 0.2);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, var(--secondary-500), var(--secondary-600));
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(20, 184, 166, 0.3);
}

.btn-accent {
    background: var(--gradient-accent);
    border: none;
    color: white;
    box-shadow: 0 4px 12px rgba(236, 72, 153, 0.2);
}

.btn-accent:hover {
    background: linear-gradient(135deg, #e11d48, #be123c);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(236, 72, 153, 0.3);
}

.btn-gold {
    background: var(--gradient-gold);
    border: none;
    color: white;
    box-shadow: 0 4px 12px rgba(251, 191, 36, 0.2);
}

.btn-gold:hover {
    background: linear-gradient(135deg, #f59e0b, #b45309);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(251, 191, 36, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-200);
    color: var(--primary-700);
}

.btn-outline:hover {
    border-color: var(--primary-400);
    color: var(--primary-800);
    background: var(--primary-50);
    transform: translateY(-2px);
}

.btn-glass {
    background: var(--glass-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    color: white;
}

.btn-glass:hover {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    transform: translateY(-2px);
}

/* Cards */
.card {
    border: none;
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-glass {
    background: var(--glass-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
}

.card-dark-glass {
    background: var(--dark-glass-background);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--dark-glass-border);
    box-shadow: var(--glass-shadow);
    color: white;
}

/* Hero Section */
.hero {
    background: var(--gradient-dark);
    color: white;
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath opacity='.5' d='M96 95h4v1h-4v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9zm-1 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.2;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.particle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.3;
    animation: float 15s infinite ease-in-out;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0);
    }
    25% {
        transform: translateY(-30px) translateX(30px);
    }
    50% {
        transform: translateY(-15px) translateX(-20px);
    }
    75% {
        transform: translateY(30px) translateX(10px);
    }
}

.hero-shape {
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 80px;
    background: var(--neutral-50);
    clip-path: polygon(0 100%, 100% 100%, 100% 0, 0 100%);
}

.hero-shape-alt {
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 80px;
    background: var(--neutral-50);
    clip-path: polygon(0 100%, 100% 100%, 0 0);
}

.floating {
    animation: floating 6s ease-in-out infinite;
}

@keyframes floating {
    0% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(2deg); }
    100% { transform: translateY(0px) rotate(0deg); }
}

.logo-container {
    position: relative;
    z-index: 1;
    perspective: 1000px;
}

.logo {
    width: 160px;
    height: 160px;
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.2);
    position: absolute;
    overflow: hidden;
    transform-style: preserve-3d;
    transform: rotateX(10deg) rotateY(10deg);
    transition: transform 0.5s ease;
}

.logo:hover {
    transform: rotateX(0deg) rotateY(0deg);
}

.logo::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.1) 100%
    );
    transform: rotate(30deg);
    animation: shine 6s infinite;
}

@keyframes shine {
    0% { transform: rotate(30deg) translateX(-100%); }
    20%, 100% { transform: rotate(30deg) translateX(100%); }
}

.logo-inner {
    font-size: 80px;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: colorShift 8s infinite alternate;
}

@keyframes colorShift {
    0% { 
        background: var(--gradient-gold);
        -webkit-background-clip: text;
        background-clip: text;
    }
    50% { 
        background: var(--gradient-accent);
        -webkit-background-clip: text;
        background-clip: text;
    }
    100% { 
        background: var(--gradient-blue-purple);
        -webkit-background-clip: text;
        background-clip: text;
    }
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 900;
    margin-bottom: 20px;
    position: relative;
    z-index: 1;
    letter-spacing: -0.04em;
    line-height: 1.1;
    background: linear-gradient(to right, #fff, #f5f5f5);
    -webkit-background-clip: text;
    background-clip: text;
    /* -webkit-text-fill-color: transparent; */
}

.hero-subtitle {
    font-size: 1.3rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto 40px;
    position: relative;
    z-index: 1;
    font-weight: 400;
}

/* Navbar */
.navbar {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    padding: 20px 0;
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.navbar-brand {
    font-weight: 800;
    font-size: 1.5rem;
    color: white;
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
}

.navbar-brand:hover {
    color: var(--accent-gold);
}

.navbar-brand img {
    width: 32px;
    height: 32px;
    margin-right: 10px;
    border-radius: 100%;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.navbar-brand:hover img {
    transform: rotate(10deg);
    box-shadow: 0 6px 12px rgba(251, 191, 36, 0.3);
}

.navbar-brand span {
    color: var(--accent-gold);
}

.navbar-brand:hover span {
    color: var(--accent-amber);
}

.navbar-nav .nav-link {
    color: white;
    font-weight: 500;
    padding: 10px 15px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.navbar-nav .nav-link::after {
    content: '';
    position: absolute;
    bottom: 5px;
    left: 15px;
    width: 0;
    height: 2px;
    background: var(--accent-gold);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-nav .nav-link:hover {
    color: var(--accent-gold);
}

.navbar-nav .nav-link:hover::after {
    width: calc(100% - 30px);
}

.navbar-toggler {
    border: none;
    padding: 0;
}

.navbar-toggler:focus {
    box-shadow: none;
}

.navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 1)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* Features Section */
.section-title {
    position: relative;
    margin-bottom: 60px;
    font-weight: 800;
    color: var(--neutral-900);
    letter-spacing: -0.03em;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.feature-card {
    background: white;
    border-radius: 24px;
    padding: 40px 30px;
    box-shadow: var(--shadow-lg);
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    position: relative;
    overflow: hidden;
    z-index: 1;
    border: 1px solid var(--neutral-100);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: var(--gradient-primary);
    opacity: 0.03;
    z-index: -1;
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
    transform: translateY(-10px) rotateX(5deg);
    box-shadow: var(--shadow-xl);
}

.feature-card:hover::before {
    height: 100%;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 25px;
    display: inline-block;
    color: var(--primary-600);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: transform 0.5s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--neutral-900);
    letter-spacing: -0.02em;
}

/* Steps Section */
.steps-container {
    position: relative;
    padding: 30px 0;
}

.steps-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-300), var(--primary-500));
}

.step-item {
    position: relative;
    margin-bottom: 70px;
}

.step-item:last-child {
    margin-bottom: 0;
}

.step-number {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 700;
    position: absolute;
    top: -32px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: 0 10px 25px rgba(109, 40, 217, 0.2);
    transition: all 0.3s ease;
}

.step-item:hover .step-number {
    transform: translateX(-50%) scale(1.1);
    box-shadow: 0 15px 35px rgba(109, 40, 217, 0.3);
}

.step-content {
    background: white;
    border-radius: 24px;
    padding: 40px 30px;
    box-shadow: var(--shadow-lg);
    margin-top: 35px;
    position: relative;
    z-index: 1;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--neutral-100);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.step-content:hover {
    transform: translateY(-5px) rotateX(2deg);
    box-shadow: var(--shadow-xl);
}

/* Author Section */
.author-card {
    background: var(--gradient-dark);
    border-radius: 24px;
    padding: 50px 40px;
    color: white;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
    transform-style: preserve-3d;
    perspective: 1000px;
}

.author-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath opacity='.5' d='M96 95h4v1h-4v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9zm-1 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.2;
}

.author-avatar {
    width: 120px;
    height: 120px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 50px;
    margin: 0 auto 30px;
    position: relative;
    z-index: 1;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.author-avatar:hover { 
    transform-style: preserve-3d;
    transition: transform 0.5s ease;
}

.author-avatar:hover {
    transform: scale(1.05) rotateY(10deg);
}

.author-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
    background: linear-gradient(to right, #fff, #f5f5f5);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.author-link {
    color: var(--accent-gold);
    text-decoration: none;
    position: relative;
    z-index: 1;
    transition: all 0.3s ease;
    font-weight: 500;
}

.author-link:hover {
    color: var(--accent-amber);
    text-decoration: underline;
}

/* Version Section */
.version-badge {
    display: inline-block;
    background: var(--gradient-primary);
    color: white;
    padding: 8px 20px;
    border-radius: 50px;
    font-weight: 700;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(109, 40, 217, 0.2);
    transition: all 0.3s ease;
}

.version-badge:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(109, 40, 217, 0.3);
}

.update-card {
    background: white;
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 25px;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-left: 5px solid var(--primary-600);
    transform-style: preserve-3d;
    perspective: 1000px;
}

.update-card:hover {
    transform: translateX(5px) rotateY(2deg);
    box-shadow: var(--shadow-xl);
}

.update-version {
    font-weight: 700;
    color: var(--primary-600);
    margin-bottom: 15px;
    display: block;
    font-size: 1.2rem;
}

/* Footer */
.footer {
    background: var(--gradient-dark);
    color: white;
    padding: 80px 0 40px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='100' height='100' viewBox='0 0 100 100'%3E%3Cg fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath opacity='.5' d='M96 95h4v1h-4v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4h-9v4h-1v-4H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15v-9H0v-1h15V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h9V0h1v15h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9h4v1h-4v9zm-1 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-10 0v-9h-9v9h9zm-9-10h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9zm10 0h9v-9h-9v9z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.2;
}

.footer-content {
    position: relative;
    z-index: 1;
}

.social-links {
    margin-bottom: 30px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    margin: 0 10px;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.social-link:hover {
    background: var(--accent-gold);
    transform: translateY(-5px);
    color: var(--neutral-900);
    box-shadow: 0 10px 20px rgba(251, 191, 36, 0.3);
}

.copyright {
    opacity: 0.8;
    font-size: 0.9rem;
}

/* Scroll to top button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
    box-shadow: 0 5px 15px rgba(109, 40, 217, 0.2);
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(109, 40, 217, 0.3);
}

/* Preloader */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--neutral-900);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader {
    position: relative;
    width: 80px;
    height: 80px;
}

.loader:before, .loader:after {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--primary-500);
    opacity: 0.6;
    animation: pulse 2s ease-in-out infinite;
}

.loader:after {
    animation-delay: -1s;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(0);
        opacity: 0.6;
    }
    50% {
        transform: scale(1);
        opacity: 0;
    }
}

/* 3D Card Effect */
.card-3d {
    transform-style: preserve-3d;
    perspective: 1000px;
    transition: transform 0.5s ease;
}

.card-3d:hover {
    transform: rotateX(5deg) rotateY(5deg);
}

/* Usage Section Styles */
.usage-step {
    cursor: pointer;
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 10px;
    transition: all 0.3s ease;
    background: white;
    border: 1px solid var(--neutral-200);
    display: flex;
    align-items: center;
}

.usage-step.active {
    background: var(--primary-50);
    border-color: var(--primary-300);
    box-shadow: var(--shadow-md);
}

.usage-step-number {
    width: 36px;
    height: 36px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    margin-right: 15px;
    flex-shrink: 0;
}

.usage-step-content {
    flex-grow: 1;
}

.usage-step h5 {
    margin: 0 0 5px;
    font-weight: 600;
    transition: color 0.3s ease;
}

.usage-step p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--neutral-600);
}

.usage-step.active h5 {
    color: var(--primary-700);
}

.usage-image-container {
    position: relative;
    height: 370px;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
}

.usage-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease;
    border-radius: 16px;
}

.usage-image.active {
    opacity: 1;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3.5rem;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .logo {
        width: 140px;
        height: 140px;
    }
    
    .logo-inner {
        font-size: 70px;
    }
    
    .usage-image-container {
        height: 300px;
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .logo {
        width: 120px;
        height: 120px;
    }
    
    .logo-inner {
        font-size: 60px;
    }
    
    .steps-container::before {
        left: 30px;
    }
    
    .step-number {
        left: 30px;
        transform: none;
    }
    
    .step-content {
        margin-left: 60px;
    }
    
    .step-item:hover .step-number {
        transform: scale(1.1);
    }
    
    .usage-steps-container {
        display: flex;
        flex-wrap: nowrap;
        overflow-x: auto;
        padding-bottom: 15px;
        margin-bottom: 20px;
        -webkit-overflow-scrolling: touch;
    }
    
    .usage-step {
        min-width: 250px;
        margin-right: 10px;
        margin-bottom: 0;
        flex-direction: column;
        text-align: center;
        padding: 15px 10px;
    }
    
    .usage-step-number {
        margin-right: 0;
        margin-bottom: 10px;
    }
    
    .usage-image-container {
        height: 250px;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 2.3rem;
    }
    
    .btn {
        padding: 0.6rem 1.2rem;
    }
    
    .usage-step {
        min-width: 200px;
    }
    
    .usage-image-container {
        height: 200px;
    }
}

/* Footer QR Codes */
.qr-codes {
    background: rgba(255, 255, 255, 0.1);
    padding: 30px;
    border-radius: 16px;
    backdrop-filter: blur(10px);
    height: 100%;
}

.qr-codes h4 {
    color: white;
    font-weight: 600;
    margin-bottom: 20px;
    text-align: center;
}

.qr-item {
    transition: all 0.3s ease;
}

.qr-item:hover {
    transform: translateY(-5px);
}

.qr-item img {
    border-radius: 8px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.qr-item p {
    color: white;
    font-size: 0.9rem;
    opacity: 0.9;
}

.btn-gold.square-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}

.btn-gold.square-icon i {
    font-size: 1.2rem;
    margin: 0;
}