:root {
    --primary-color: #FF8A00;
    --primary-gradient: linear-gradient(135deg, #FF8A00, #FFD15C);
    --text-main: #333333;
    --text-muted: #666666;
    --bg-color: #FAFAFA;
    --card-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.4);
    --shadow: 0 8px 32px 0 rgba(255, 138, 0, 0.15);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--bg-color);
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(255, 209, 92, 0.15), transparent 30%),
        radial-gradient(circle at 85% 30%, rgba(255, 138, 0, 0.1), transparent 30%);
    background-attachment: fixed;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

header {
    padding: 2rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    background: rgba(250, 250, 250, 0.8);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 40px;
    border-radius: 10px;
}

nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    margin-left: 2rem;
    transition: color 0.3s;
}

nav a:hover, nav a.active {
    color: var(--primary-color);
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}

/* Glassmorphism Card */
.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 24px;
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow);
    padding: 3rem;
    margin-bottom: 2rem;
}

/* Typography */
h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

h2 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

h3 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    font-weight: bold;
    border-radius: 30px;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 138, 0, 0.3);
}

/* Features Grid */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-item {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.03);
    border: 1px solid rgba(0,0,0,0.02);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

/* Documents (Privacy/Terms) */
.doc-content h2 {
    margin-top: 2rem;
    font-size: 1.5rem;
}

.doc-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.doc-content li {
    margin-bottom: 0.5rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    border-top: 1px solid rgba(0,0,0,0.05);
    margin-top: 2rem;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    header { flex-direction: column; gap: 1rem; }
    nav { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; }
    nav a { margin-left: 0; }
    .glass-card { padding: 2rem; }
}