:root {
    --primary: #2563eb; --dark: #1e293b; --gray: #64748b;
    --light: #f8fafc; --white: #ffffff; --border: #e2e8f0;
    --container: 1200px;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; color: var(--dark); line-height: 1.6; background: var(--white); }
a { text-decoration: none; color: inherit; transition: 0.3s; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 20px; }
.section { padding: 80px 0; }
.section-bg { background-color: var(--light); }
.section-title { text-align: center; font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; }
.section-desc { text-align: center; color: var(--gray); margin-bottom: 3rem; }
.btn { display: inline-block; background: var(--primary); color: #fff; padding: 12px 30px; border-radius: 50px; font-weight: 600; }
.btn:hover { background: #1d4ed8; transform: translateY(-2px); }

/* Header */
header { position: fixed; top: 0; width: 100%; background: rgba(255,255,255,0.95); backdrop-filter: blur(10px); z-index: 1000; border-bottom: 1px solid var(--border); }
.header-inner { height: 70px; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 800; color: var(--dark); }
.logo span { color: var(--primary); }
.nav ul { display: flex; gap: 30px; }
.nav a:hover { color: var(--primary); }

/* Hero */
.hero { padding: 160px 0 100px; text-align: center; }
.hero h1 { font-size: 4rem; line-height: 1.1; margin-bottom: 20px; font-weight: 800; letter-spacing: -1px; }
.hero p { font-size: 1.25rem; color: var(--gray); margin-bottom: 40px; }

/* Grids */
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* Cards */
.card { padding: 40px; background: #fff; border: 1px solid var(--border); border-radius: 12px; transition: 0.3s; text-align: center; }
.card:hover { transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.05); border-color: var(--primary); }
.icon-box { font-size: 2.5rem; color: var(--primary); margin-bottom: 20px; }

/* Project */
.project-card { border-radius: 12px; overflow: hidden; background: #fff; box-shadow: 0 4px 10px rgba(0,0,0,0.05); }
.project-thumb { height: 250px; overflow: hidden; background: #eee; }
.project-thumb img { width: 100%; height: 100%; object-fit: cover; transition: 0.5s; }
.project-card:hover .project-thumb img { transform: scale(1.05); }
.project-info { padding: 25px; }
.project-cat { font-size: 0.8rem; color: var(--primary); font-weight: 700; text-transform: uppercase; margin-bottom: 8px; display: block; }

/* Stats */
.stat-item h3 { font-size: 3rem; color: var(--primary); font-weight: 800; margin-bottom: 5px; }

/* Team */
.team-avatar { width: 150px; height: 150px; border-radius: 50%; object-fit: cover; margin: 0 auto 20px; background: #ddd; }

/* Footer */
footer { background: var(--dark); color: #fff; padding: 60px 0 20px; text-align: center; }
.copyright { color: #64748b; font-size: 0.9rem; margin-top: 40px; border-top: 1px solid #334155; padding-top: 20px; }