:root {
    --bg-primary: #F5F7FA;
    --bg-secondary: #E8EEF5;
    --bg-card: #FFFFFF;
    --primary: #6B8AF6;
    --primary-light: #A8C0FF;
    --primary-dark: #5A7AE5;
    --text-primary: #1A1F36;
    --text-secondary: #6B7280;
    --text-muted: #9CA3AF;
    --border: rgba(107, 138, 246, 0.1);
    --shadow-light: rgba(107, 138, 246, 0.08);
    --shadow-medium: rgba(107, 138, 246, 0.12);
    --shadow-dark: rgba(107, 138, 246, 0.2);
    --radius: 16px;
    --radius-sm: 12px;
    --radius-lg: 24px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(245, 247, 250, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 4px 30px var(--shadow-light);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.35rem;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.6rem;
}

.logo-text {
    background: linear-gradient(135deg, #8B5CF6 0%, #A855F7 50%, #6366F1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    letter-spacing: -0.5px;
    font-size: 1.15rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 20px;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(107, 138, 246, 0.08);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(107, 138, 246, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 50%, #E0E8F8 100%);
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 80%;
    height: 80%;
    background: radial-gradient(circle, rgba(107, 138, 246, 0.15) 0%, transparent 70%);
    animation: float 20s ease-in-out infinite;
}

.hero-bg::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 60%;
    height: 60%;
    background: radial-gradient(circle, rgba(168, 192, 255, 0.2) 0%, transparent 70%);
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(30px, -30px) rotate(5deg); }
    66% { transform: translate(-20px, 20px) rotate(-5deg); }
}

.particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

#bg-canvas {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0.3;
    animation: particle-float 10s ease-in-out infinite;
}

@keyframes particle-float {
    0%, 100% { transform: translateY(0) translateX(0); opacity: 0.3; }
    50% { transform: translateY(-100px) translateX(50px); opacity: 0.6; }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.8);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 32px;
    box-shadow: 
        0 4px 20px var(--shadow-light),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    animation: fade-in-up 0.8s ease-out;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.hero-title {
    margin-bottom: 24px;
    animation: fade-in-up 0.8s ease-out 0.1s backwards;
}

.title-main {
    display: flex;
    justify-content: center;
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 800;
    letter-spacing: 0.02em;
    gap: 0.02em;
}

.title-main span {
    display: inline-block;
}

.title-main .char-1 {
    color: #8B5CF6;
}

.title-main .char-2 {
    color: #3B82F6;
}

.title-main .char-3 {
    color: #10B981;
}

.title-main .char-4 {
    color: #F59E0B;
}

.title-sub {
    display: block;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 300;
    color: var(--primary);
    letter-spacing: 0.1em;
    margin-top: 8px;
}

.hero-subtitle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
    animation: fade-in-up 0.8s ease-out 0.2s backwards;
}

.subtitle-tag {
    padding: 6px 16px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    color: white;
    border-radius: 20px;
    font-size: 0.95rem;
    font-weight: 500;
}

.subtitle-multiply {
    color: var(--text-muted);
    font-size: 1.25rem;
}

.hero-desc-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 40px;
    animation: fade-in-up 0.8s ease-out 0.3s backwards;
}

.hero-desc-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, #C0C0C0 50%, transparent 100%);
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin: 0;
    white-space: nowrap;
}

.hero-buttons {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
    animation: fade-in-up 0.8s ease-out 0.4s backwards;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    min-width: 200px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 100%);
    color: white;
    box-shadow: 
        0 4px 20px rgba(99, 102, 241, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 30px rgba(99, 102, 241, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-secondary {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    color: white;
    box-shadow: 
        0 4px 20px rgba(16, 185, 129, 0.35),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 30px rgba(16, 185, 129, 0.45),
        inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-icon {
    font-size: 1.25rem;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.875rem;
    animation: bounce 2s ease-in-out infinite;
}

.scroll-icon {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.scroll-icon::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    animation: scroll-down 2s ease-in-out infinite;
}

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

@keyframes scroll-down {
    0%, 100% { transform: translateX(-50%) translateY(0); opacity: 1; }
    50% { transform: translateX(-50%) translateY(8px); opacity: 0.3; }
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: linear-gradient(135deg, rgba(107, 138, 246, 0.1) 0%, rgba(168, 192, 255, 0.1) 100%);
    color: var(--primary);
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
}

.modules .section-title {
    background: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #A855F7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.resources .section-title {
    background: linear-gradient(135deg, #F97316 0%, #EA580C 50%, #C2410C 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modules {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
}

.modules-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.module-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 
        8px 8px 20px rgba(107, 138, 246, 0.08),
        -8px -8px 20px rgba(255, 255, 255, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.5);
    display: flex;
    flex-direction: column;
    min-height: 220px;
}

.module-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary) 0%, var(--primary-light) 100%);
    opacity: 0;
    transition: var(--transition);
}

.module-card:hover {
    transform: translateY(-8px);
    box-shadow: 
        12px 12px 30px rgba(107, 138, 246, 0.15),
        -12px -12px 30px rgba(255, 255, 255, 0.9),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.module-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(107, 138, 246, 0.1) 0%, rgba(168, 192, 255, 0.1) 100%);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: var(--transition);
}

.card-icon svg {
    width: 28px;
    height: 28px;
    color: var(--primary);
}

.module-card:hover .card-icon {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.module-card:hover .card-icon svg {
    color: white;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.card-desc {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    flex-grow: 1;
}

.card-arrow {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: rgba(107, 138, 246, 0.1);
    border-radius: 50%;
    color: var(--primary);
    font-size: 1.25rem;
    transition: var(--transition);
    margin-top: auto;
}

.module-card:hover .card-arrow {
    background: var(--primary);
    color: white;
    transform: translateX(4px);
}

.tools {
    padding: 100px 0;
    background: var(--bg-primary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.tool-card {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    box-shadow: 
        6px 6px 16px rgba(107, 138, 246, 0.06),
        -6px -6px 16px rgba(255, 255, 255, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.tool-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        10px 10px 24px rgba(107, 138, 246, 0.12),
        -10px -10px 24px rgba(255, 255, 255, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.tool-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.tool-content {
    flex: 1;
}

.tool-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.tool-desc {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.tool-arrow {
    color: var(--text-muted);
    font-size: 1.25rem;
    transition: var(--transition);
}

.tool-card:hover .tool-arrow {
    color: var(--primary);
    transform: translateX(4px);
}

.resources {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.resources-grid {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.resources-grid-wide {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 16px;
}

.resource-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 28px 36px;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    min-width: 140px;
    box-shadow: 
        6px 6px 16px rgba(107, 138, 246, 0.06),
        -6px -6px 16px rgba(255, 255, 255, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.5);
}

.resource-card-wide {
    min-width: auto;
    width: 100%;
    padding: 24px 12px;
}

.resource-card:hover {
    transform: translateY(-6px);
    box-shadow: 
        10px 10px 24px rgba(107, 138, 246, 0.12),
        -10px -10px 24px rgba(255, 255, 255, 0.8),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.resource-icon {
    font-size: 2.25rem;
}

.resource-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.footer {
    padding: 60px 0 40px;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, #D8E2F0 100%);
    border-top: 1px solid var(--border);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.footer-logo {
    font-size: 2rem;
}

.footer-name {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, #8B5CF6 0%, #A855F7 50%, #6366F1 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-info {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.8rem;
    transition: var(--transition);
}

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

.footer-domain {
    font-size: 1rem;
    font-weight: 500;
}

.footer-divider {
    color: var(--text-muted);
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--text-muted);
}

@media (max-width: 1024px) {
    .modules-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        flex-direction: column;
        padding: 16px;
        gap: 4px;
        box-shadow: 0 10px 40px var(--shadow-medium);
        border-radius: 0 0 var(--radius) var(--radius);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero {
        padding: 100px 20px 60px;
    }
    
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        min-width: unset;
        justify-content: center;
    }
    
    .modules-grid {
        grid-template-columns: 1fr;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .resources-grid {
        gap: 16px;
    }
    
    .resources-grid-wide {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .resource-card {
        min-width: calc(50% - 16px);
        padding: 20px;
    }
    
    .hero-scroll {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-subtitle {
        gap: 8px;
    }
    
    .subtitle-tag {
        padding: 4px 12px;
        font-size: 0.85rem;
    }
    
    .subtitle-multiply {
        font-size: 1rem;
    }
    
    .resource-card {
        min-width: 100%;
    }
}