* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
:root {
    --primary: #7c3aed;
    --primary-light: #9f7aea;
    --primary-dark: #6d28d9;
    --primary-bg: #f5f0ff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --black: #000000;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --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);
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    color: var(--gray-800);
    line-height: 1.5;
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--gray-900);
}
h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
}
h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
}
.navbar {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-200);
    z-index: 1000;
}
.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}
.logo i {
    font-size: 28px;
}
.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}
.nav-links a {
    text-decoration: none;
    color: var(--gray-600);
    font-weight: 500;
    transition: color var(--transition-fast);
    font-size: 0.95rem;
}
.nav-links a:hover {
    color: var(--primary);
}
.login-btn {
    background: var(--primary);
    color: var(--white) !important;
    padding: 8px 20px;
    border-radius: 40px;
    transition: background var(--transition-fast) !important;
    cursor: pointer;
}
.login-btn:hover {
    background: var(--primary-dark);
    color: var(--white) !important;
}
.hero {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--gray-50) 0%, var(--white) 100%);
}
.hero-content {
    max-width: 720px;
    margin: 0 auto;
    text-align: center;
}
.gradient-text {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.dynamic-text-container {
    font-size: 20px;
    color: var(--gray-600);
    margin: 20px 0 30px;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 8px;
}
.static-text {
    color: var(--gray-800);
    font-weight: 500;
}
.dynamic-text {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 700;
    min-width: 200px;
    text-align: left;
}
.dynamic-text::after {
    content: '|';
    display: inline-block;
    margin-left: 4px;
    font-weight: 400;
    color: var(--primary);
    animation: blink 0.7s infinite;
}
@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}
.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.25rem);
    color: var(--gray-500);
    margin: 1.5rem 0 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}
.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: 40px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 1rem;
    white-space: nowrap;
}
.btn-primary {
    background: var(--primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}
.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}
.btn-secondary {
    background: var(--white);
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}
.btn-secondary:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.btn-large {
    padding: 18px 36px;
    font-size: 18px;
}
.features {
    padding: 100px 0;
    background: var(--white);
}
.section-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto 60px;
}
.section-header p {
    font-size: 1.25rem;
    color: var(--gray-500);
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}
.feature-card {
    background: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 32px;
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
}
.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-bg);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--primary);
    font-size: 28px;
    border: 1px solid rgba(37, 99, 235, 0.1);
}
.feature-card h3 {
    font-size: 22px;
    margin-bottom: 12px;
    color: var(--gray-900);
}
.feature-card p {
    color: var(--gray-500);
    line-height: 1.6;
    font-size: 0.95rem;
}
.cta {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--gray-900) 0%, #1e293b 100%);
    color: var(--white);
    text-align: center;
    position: relative;
    isolation: isolate;
}
.cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 30% 30%, rgba(37, 99, 235, 0.15), transparent 50%);
    z-index: -1;
}
.cta-content {
    max-width: 640px;
    margin: 0 auto;
}
.cta h2 {
    color: var(--white);
    font-size: clamp(2.5rem, 5vw, 3rem);
    margin-bottom: 1rem;
}
.cta p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 1.25rem;
    margin-bottom: 2rem;
}
.cta-note {
    font-size: 0.875rem;
    opacity: 0.6;
    margin-top: 2rem;
}
.cta .btn-primary {
    background: var(--white);
    color: var(--gray-900);
    border: none;
}
.cta .btn-primary:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-3px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
}
.footer {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 60px 0 30px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}
.footer-col-logo {
    max-width: 320px;
}
.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 16px;
}
.footer-description {
    color: var(--gray-500);
    margin-bottom: 24px;
    font-size: 0.95rem;
    line-height: 1.6;
}
.social-links {
    display: flex;
    gap: 12px;
}
.social-links a {
    width: 40px;
    height: 40px;
    background: var(--gray-100);
    border: 1px solid var(--gray-200);
    border-radius: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-600);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-size: 20px;
}
.social-links a:hover {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: translateY(-3px);
}
.footer-col h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: var(--gray-900);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 12px;
}
.footer-col ul li a {
    text-decoration: none;
    color: var(--gray-500);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}
.footer-col ul li a:hover {
    color: var(--primary);
}
.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
}
.copyright {
    color: var(--gray-500);
    font-size: 14px;
}
.footer-links {
    display: flex;
    gap: 24px;
}
.footer-links a {
    text-decoration: none;
    color: var(--gray-500);
    font-size: 14px;
    transition: color var(--transition-fast);
}
.footer-links a:hover {
    color: var(--primary);
}
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
.animate-in {
    animation: fadeInUp 0.6s ease-out forwards;
    opacity: 0;
}
.animate-delay-1 {
    animation-delay: 0.2s;
}
.animate-delay-2 {
    animation-delay: 0.4s;
}
@media (max-width: 1024px) {
    .hero {
        padding: 100px 0 60px;
    }
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-col-logo {
        grid-column: span 2;
        max-width: 100%;
    }
}
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }
    .hero {
        padding: 100px 0 60px;
    }
    .hero h1 {
        font-size: 40px;
    }
    .hero-buttons {
        flex-direction: column;
        width: 100%;
        max-width: 320px;
        margin-left: auto;
        margin-right: auto;
    }
    .hero-buttons .btn {
        width: 100%;
        white-space: normal;
    }
    .nav-links {
        gap: 16px;
    }
    .nav-links a:not(.login-btn) {
        display: none;
    }
    .features {
        padding: 60px 0;
    }
    .section-header {
        margin-bottom: 40px;
    }
    .section-header p {
        font-size: 1.125rem;
    }
    .features-grid {
        gap: 16px;
    }
    .feature-card {
        padding: 24px;
    }
    .cta {
        padding: 60px 0;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .footer-col-logo {
        grid-column: span 1;
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
    .dynamic-text-container {
        font-size: 18px;
    }
}
@media (max-width: 480px) {
    .hero h1 {
        font-size: 32px;
    }
    .hero-subtitle {
        font-size: 1rem;
    }
    .btn {
        padding: 12px 24px;
    }
    .feature-card {
        border-radius: 28px;
    }
    .feature-icon {
        width: 50px;
        height: 50px;
        font-size: 24px;
    }
    .feature-card h3 {
        font-size: 20px;
    }
    .footer-links {
        gap: 16px;
        flex-direction: column;
    }
}
@media (max-width: 360px) {
    .container {
        padding: 0 16px;
    }
    .hero h1 {
        font-size: 28px;
    }
    .dynamic-text-container {
        font-size: 16px;
    }
    .feature-card {
        padding: 20px;
    }
}