:root {
    --g-blue: #4285F4;
    --g-red: #EA4335;
    --g-yellow: #FBBC05;
    --g-green: #34A853;
    --g-text: #202124;
    --g-text-light: #5f6368;
    --g-border: #dadce0;
    --g-bg-gray: #f8f9fa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Google Sans', Roboto, Arial, sans-serif;
}

body {
    background: #fff;
    color: var(--g-text);
    overflow-x: hidden;
}

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

/* Header */
header {
    height: 64px;
    display: flex;
    align-items: center;
    padding: 0 24px;
    position: sticky;
    top: 0;
    background: #fff;
    z-index: 1000;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 22px;
    font-weight: 500;
    color: var(--g-text-light);
    text-decoration: none;
}

.logo-colors span:nth-child(1) { color: var(--g-blue); }
.logo-colors span:nth-child(2) { color: var(--g-red); }
.logo-colors span:nth-child(3) { color: var(--g-yellow); }
.logo-colors span:nth-child(4) { color: var(--g-blue); }
.logo-colors span:nth-child(5) { color: var(--g-green); }
.logo-colors span:nth-child(6) { color: var(--g-red); }

nav {
    margin-left: 40px;
    flex: 1;
}

.nav-links {
    display: flex;
    gap: 24px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--g-text-light);
    font-size: 14px;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--g-text);
}

/* Hero Section */
.hero {
    padding: 100px 0 60px;
    text-align: center;
}

.hero h1 {
    font-size: 64px;
    font-weight: 400;
    letter-spacing: -1px;
    margin-bottom: 24px;
    line-height: 1.1;
}

.hero p {
    font-size: 20px;
    color: var(--g-text-light);
    max-width: 800px;
    margin: 0 auto 40px;
}

.btn-primary {
    background: var(--g-blue);
    color: #fff;
    padding: 12px 32px;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    transition: background 0.2s, box-shadow 0.2s;
    display: inline-block;
}

.btn-primary:hover {
    background: #1a73e8;
    box-shadow: 0 1px 3px 0 rgba(60,64,67,0.3), 0 4px 8px 3px rgba(60,64,67,0.15);
}

/* Features Section */
.features {
    padding: 80px 0;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.feature-item {
    text-align: left;
}

.feature-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 24px;
}

.feature-item h3 {
    font-size: 24px;
    font-weight: 400;
    margin-bottom: 16px;
}

.feature-item p {
    color: var(--g-text-light);
    font-size: 16px;
    line-height: 1.6;
}

/* Banner Section */
.banner {
    background: var(--g-bg-gray);
    padding: 100px 0;
    text-align: center;
}

.banner h2 {
    font-size: 48px;
    font-weight: 400;
    margin-bottom: 40px;
}

.banner-img {
    width: 100%;
    max-width: 900px;
    height: 400px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 1px 2px 0 rgba(60,64,67,0.3), 0 1px 3px 1px rgba(60,64,67,0.15);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 100px;
}

/* Footer */
footer {
    padding: 60px 0 40px;
    border-top: 1px solid var(--g-border);
    color: var(--g-text-light);
    font-size: 14px;
}

.footer-links {
    display: flex;
    gap: 30px;
    margin-bottom: 24px;
}

.footer-links a {
    text-decoration: none;
    color: var(--g-text-light);
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: #fff;
    margin: 10% auto;
    padding: 40px;
    border: 1px solid #dadce0;
    width: 100%;
    max-width: 500px;
    border-radius: 8px;
    position: relative;
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    animation: modalFadeIn 0.3s;
}

@keyframes modalFadeIn {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.close {
    color: #5f6368;
    position: absolute;
    right: 20px;
    top: 15px;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: #202124;
}

@media (max-width: 768px) {
    .hero h1 { font-size: 40px; }
    .feature-grid { grid-template-columns: 1fr; }
    .modal-content { margin: 20% 20px; width: auto; }
}