:root {
    --primary: #6366f1;
    --secondary: #ec4899;
    --accent: #8b5cf6;
    --text-dark: #1e293b;
    --text-light: #f8fafc;
    --glass-bg: rgba(255, 255, 255, 0.25);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', 'Noto Sans TC', sans-serif;
}

body {
    background-color: #f0f2f5;
    min-height: 100vh;
    color: var(--text-dark);
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* Background Animation */
.background-blobs {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: drift 20s infinite alternate;
}

.blob-1 {
    width: 500px;
    height: 500px;
    background: #a5b4fc;
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 400px;
    height: 400px;
    background: #f9a8d4;
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

.blob-3 {
    width: 300px;
    height: 300px;
    background: #c4b5fd;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: -10s;
}

@keyframes drift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(30px, 50px) scale(1.1); }
}

/* Navigation */
.glass-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    transition: color 0.3s;
}

.nav-item:hover {
    color: var(--primary);
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white !important;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
    transition: transform 0.2s, box-shadow 0.2s;
}

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

/* Container */
.container {
    flex: 1;
    padding: 2rem 5%;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* Glass Cards */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--glass-shadow);
    transition: transform 0.3s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
}

/* Typography */
h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: 800;
}

h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

p {
    line-height: 1.6;
    margin-bottom: 1rem;
    color: #475569;
}

/* Footer */
.glass-footer {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    margin-top: auto;
    border-top: 1px solid var(--glass-border);
    font-size: 0.9rem;
    color: #64748b;
}

/* Utilities */
.text-center { text-align: center; }
.mt-2 { margin-top: 2rem; }
.mb-2 { margin-bottom: 2rem; }
.flex-split {
    display: flex;
    gap: 2rem;
    align-items: center;
}
.half { flex: 1; }

@media (max-width: 768px) {
    .flex-split { flex-direction: column; }
    h1 { font-size: 2rem; }
    .nav-links { gap: 1rem; }
}