:root {
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary-color: #f472b6;
    --accent-color: #22d3ee;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-light: #94a3b8;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.7;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.025em;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-links li {
    display: flex;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
    position: relative;
    display: flex;
    align-items: center;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition-normal);
}

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

/* Language Switcher */
.nav-links li.language-switcher {
    margin-left: 1rem;
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.25rem;
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.lang-btn {
    padding: 0.375rem 0.75rem;
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition-normal);
    font-size: 0.9375rem;
    font-weight: 500;
    line-height: 1.25;
}

.lang-btn:hover {
    color: var(--text-primary);
}

.lang-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

@media (max-width: 768px) {
    .language-switcher {
        margin-top: 1rem;
        justify-content: center;
    }
}

.nav-links a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding-top: 70px;
    background: linear-gradient(135deg, #f5f3ff 0%, #fdf2f8 30%, #ecfeff 70%, #f0fdf4 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-carousel {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.8s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 2rem;
}

.carousel-slide.active {
    opacity: 1;
    animation: slideIn 0.8s ease;
}

.slide-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    animation: float 8s infinite ease-in-out;
}

.slide-visual svg {
    width: 100%;
    height: 100%;
    max-width: 800px;
    max-height: 200px;
    object-fit: contain;
}

.slide-text {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 2rem;
    max-width: 800px;
}

.carousel-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    line-height: 1.2;
}

@media (max-width: 768px) {
    .carousel-title {
        font-size: 2rem;
    }
}

@keyframes slideIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

.carousel-dots {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot:hover {
    background: rgba(99, 102, 241, 0.3);
}

.dot.active {
    background: var(--primary-color);
    transform: scale(1.2);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-content-top {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 0.5rem 1rem 1rem;
    max-width: 700px;
    margin-top: -1rem;
}

.hero-content-bottom {
    position: relative;
    z-index: 3;
    text-align: center;
    padding: 1rem;
    max-width: 700px;
    margin-top: 2rem;
}



.hero-tag {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: 600;
    border-radius: 2rem;
    margin-bottom: 1rem;
    letter-spacing: 0.05em;
}

.hero-title {
    margin-bottom: 1rem;
}

.title-main {
    display: block;
    font-size: 2rem;
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    letter-spacing: 0.1em;
}

.title-highlight {
    display: block;
    font-size: 3.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% 200%;
    animation: gradient-shift 5s ease infinite;
}

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

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 1.5rem;
    letter-spacing: 0.15em;
}

.hero-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.9;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.8);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: white;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    z-index: 10;
}

.scroll-indicator span {
    display: block;
    width: 26px;
    height: 44px;
    border: 2px solid var(--text-light);
    border-radius: 13px;
    position: relative;
}

.scroll-indicator span::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--text-light);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

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

@keyframes scroll {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.5; transform: translateX(-50%) translateY(8px); }
}

section {
    padding: 7rem 0;
}

.section-tag {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(244, 114, 182, 0.1));
    color: var(--primary-color);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 2rem;
    margin-bottom: 1rem;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text-primary), var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.manifesto {
    background: var(--bg-primary);
    position: relative;
}

.manifesto::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--border-color), transparent);
}

.manifesto-content {
    max-width: 900px;
    margin: 0 auto;
}

.manifesto-header {
    text-align: center;
    margin-bottom: 3rem;
}

.manifesto-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.manifesto-quote {
    background: linear-gradient(135deg, #f5f3ff, #fdf2f8);
    border-radius: var(--radius-xl);
    padding: 3rem;
    margin-bottom: 3rem;
    position: relative;
}

.manifesto-quote::before {
    content: '"';
    position: absolute;
    top: 1rem;
    left: 2rem;
    font-size: 6rem;
    color: var(--primary-light);
    opacity: 0.3;
    font-family: Georgia, serif;
    line-height: 1;
}

.manifesto-quote blockquote {
    font-size: 1.375rem;
    line-height: 1.8;
    color: var(--text-primary);
    font-style: italic;
    position: relative;
    z-index: 1;
}

.manifesto-insights {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.manifesto-outcome {
    background: linear-gradient(135deg, #f5f3ff 0%, #fdf2f8 50%, #ecfeff 100%);
    border-radius: var(--radius-2xl);
    padding: 3rem;
    position: relative;
    overflow: hidden;
}

.manifesto-outcome::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--accent-color));
}

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

.outcome-label {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 0.5rem 1.25rem;
    border-radius: 100px;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.outcome-quote {
    font-size: 1.5rem;
    line-height: 1.7;
    color: var(--text-primary);
    font-style: italic;
    margin-bottom: 1rem;
    position: relative;
}

.outcome-quote::before {
    content: '"';
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.2;
    position: absolute;
    top: -1rem;
    left: -1rem;
    font-family: Georgia, serif;
}

.outcome-desc {
    color: var(--text-secondary);
    font-size: 1rem;
}

.insight-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    transition: var(--transition-normal);
    border: 1px solid transparent;
}

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

.insight-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}

.insight-icon svg {
    width: 24px;
    height: 24px;
    stroke: white;
}

.insight-card h4 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.insight-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.philosophy {
    background: var(--bg-secondary);
}

.philosophy-flow {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.flow-step {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--bg-primary);
    padding: 1.5rem 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    min-width: 280px;
}

.flow-number {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    flex-shrink: 0;
}

.flow-content h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.flow-content p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.flow-arrow {
    color: var(--primary-color);
    flex-shrink: 0;
}

.flow-arrow svg {
    width: 32px;
    height: 32px;
}

.philosophy-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.philosophy-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
}

.philosophy-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.card-visual {
    margin-bottom: 1.5rem;
}

.visual-circle {
    width: 80px;
    height: 80px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(244, 114, 182, 0.1));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.philosophy-card:hover .visual-circle {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}

.visual-circle svg {
    width: 36px;
    height: 36px;
    stroke: var(--primary-color);
    transition: var(--transition-normal);
}

.philosophy-card:hover .visual-circle svg {
    stroke: white;
}

.philosophy-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.philosophy-card p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.privacy {
    background: var(--bg-primary);
}

.privacy-manifesto {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.privacy-principle {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.privacy-principle::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.principle-primary::before {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.principle-secondary::before {
    background: linear-gradient(90deg, var(--secondary-color), #f9a8d4);
}

.principle-tertiary::before {
    background: linear-gradient(90deg, var(--accent-color), #67e8f9);
}

.privacy-principle:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.principle-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.principle-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bg-tertiary);
    line-height: 1;
}

.principle-header h3 {
    font-size: 1.25rem;
    color: var(--text-primary);
}

.principle-content p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.principle-content ul {
    list-style: none;
    margin-bottom: 1.5rem;
}

.principle-content li {
    color: var(--text-secondary);
    padding-left: 1.25rem;
    position: relative;
    margin-bottom: 0.5rem;
}

.principle-content li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
}

.principle-highlight {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(244, 114, 182, 0.1));
    padding: 1rem;
    border-radius: var(--radius-md);
    text-align: center;
}

.principle-highlight strong {
    color: var(--primary-color);
    font-size: 0.9375rem;
}

.privacy-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: linear-gradient(135deg, #f5f3ff, #fdf2f8);
    padding: 1.5rem 2rem;
    border-radius: var(--radius-xl);
}

.privacy-note svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
    flex-shrink: 0;
}

.privacy-note p {
    color: var(--text-secondary);
    font-size: 1rem;
}

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

.ecosystem-visual {
    position: relative;
    padding: 3rem 0;
    margin-bottom: 4rem;
}

.ecosystem-center {
    display: flex;
    justify-content: center;
    margin-bottom: 3rem;
}

.center-node {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 10px 40px rgba(99, 102, 241, 0.4);
    position: relative;
    z-index: 2;
}

.center-icon {
    font-size: 2.5rem;
    font-weight: 700;
}

.center-label {
    font-size: 0.875rem;
    font-weight: 500;
    margin-top: 0.25rem;
}

.center-ring {
    position: absolute;
    width: 160px;
    height: 160px;
    border: 2px dashed var(--border-color);
    border-radius: 50%;
    animation: rotate 30s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.ecosystem-modules {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 1rem;
}

.module-group {
    text-align: center;
}

.group-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.group-items {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.module-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1rem;
    transition: var(--transition-normal);
    cursor: pointer;
}

.module-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.module-icon {
    font-size: 1.5rem;
    display: block;
    margin-bottom: 0.5rem;
}

.module-name {
    display: block;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
}

.module-desc {
    display: block;
    font-size: 0.75rem;
    color: var(--text-light);
}

.ecosystem-insight {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.insight-block {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2rem;
    border: 1px solid var(--border-color);
}

.insight-block h4 {
    font-size: 1.125rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.insight-block p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.download {
    background: linear-gradient(135deg, #f5f3ff 0%, #fdf2f8 50%, #ecfeff 100%);
}

.download-content {
    max-width: 1000px;
    margin: 0 auto;
}

.download-platforms {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.platform-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid var(--border-color);
    position: relative;
}

.platform-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.platform-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.platform-icon svg {
    width: 48px;
    height: 48px;
}

.platform-windows .platform-icon svg {
    color: #0078d4;
}

.platform-mac .platform-icon svg {
    color: #000;
}

.platform-mobile .platform-icon svg {
    color: var(--primary-color);
}

.platform-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.platform-version {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    font-size: 0.9375rem;
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
    width: 100%;
}

.btn-download:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-download.btn-disabled {
    background: var(--bg-tertiary);
    color: var(--text-light);
    box-shadow: none;
    cursor: not-allowed;
}

.btn-download.btn-disabled:hover {
    transform: none;
}

.platform-note {
    display: block;
    margin-top: 1rem;
    font-size: 0.75rem;
    color: var(--text-light);
}

.download-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.download-info .info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: var(--bg-primary);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.download-info .info-item svg {
    width: 24px;
    height: 24px;
    stroke: var(--primary-color);
    flex-shrink: 0;
}

.download-info .info-item h4 {
    font-size: 1rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.download-info .info-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.about {
    background: var(--bg-secondary);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.about-main h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
}

.value-icon {
    font-size: 2rem;
    line-height: 1;
    flex-shrink: 0;
}

.value-content h4 {
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
    color: var(--text-primary);
}

.value-content p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.contact-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

.contact-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.contact-person {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-avatar {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 600;
}

.contact-name {
    display: block;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-role {
    display: block;
    font-size: 0.875rem;
    color: var(--text-light);
}

.contact-email {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.75rem 1rem;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.contact-email:hover {
    background: rgba(99, 102, 241, 0.2);
}

.contact-email svg {
    width: 20px;
    height: 20px;
}

.about-closing {
    text-align: center;
    padding: 3rem;
    background: linear-gradient(135deg, #f5f3ff, #fdf2f8);
    border-radius: var(--radius-xl);
}

.about-closing blockquote {
    font-size: 1.375rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.closing-text {
    color: var(--text-light);
    font-size: 0.9375rem;
}

.footer {
    background: var(--text-primary);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.footer-logo .logo-icon {
    width: 36px;
    height: 36px;
    font-size: 1rem;
}

.footer-logo .logo-text {
    color: white;
    font-size: 1.25rem;
}

.footer-tagline {
    color: var(--text-light);
    font-size: 0.9375rem;
}

.footer-nav {
    display: flex;
    gap: 2rem;
}

.footer-nav a {
    color: var(--text-light);
    text-decoration: none;
    transition: var(--transition-fast);
}

.footer-nav a:hover {
    color: white;
}

.footer-bottom {
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

@media (max-width: 1024px) {
    .philosophy-flow {
        flex-direction: column;
    }
    
    .flow-arrow {
        transform: rotate(90deg);
    }
    
    .ecosystem-modules {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .module-group:nth-child(4),
    .module-group:nth-child(5),
    .module-group:nth-child(6) {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border-color);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .title-main {
        font-size: 1.5rem;
    }
    
    .title-highlight {
        font-size: 2.5rem;
    }
    
    .hero-desc {
        font-size: 1rem;
    }
    
    .slide-visual {
        max-width: 400px;
    }
    
    .carousel-dots {
        bottom: 30px;
    }
    
    .dot {
        width: 10px;
        height: 10px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .manifesto-insights {
        grid-template-columns: 1fr;
    }
    
    .manifesto-outcome {
        padding: 2rem 1.5rem;
    }
    
    .outcome-quote {
        font-size: 1.125rem;
    }
    
    .philosophy-cards {
        grid-template-columns: 1fr;
    }
    
    .privacy-manifesto {
        grid-template-columns: 1fr;
    }
    
    .ecosystem-modules {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .ecosystem-insight {
        grid-template-columns: 1fr;
    }
    
    .download-platforms {
        grid-template-columns: 1fr;
    }
    
    .download-info {
        grid-template-columns: 1fr;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }
    
    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .title-highlight {
        font-size: 2.75rem;
    }
    
    .ecosystem-modules {
        grid-template-columns: 1fr;
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .flow-step {
        min-width: auto;
        width: 100%;
    }
}