*{margin:0;padding:0;box-sizing:border-box;}
        body{
            font-family:'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background:#fefefe; color:#1e293b; line-height:1.5;
        }
        @import url('https://fonts.googleapis.com/css2?family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600;14..32,700&display=swap');
        .container{max-width:1280px; margin:0 auto; padding:0 24px;}
        .navbar{
            background:rgba(255,255,255,0.98); box-shadow:0 1px 0 #eef2f6;
            position:sticky; top:0; z-index:50; border-bottom:2px solid #e0f2e9;
        }
        .nav-flex{display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; padding:0.8rem 0;}
        .logo-area{display:flex; align-items:center; gap:8px;}
        .logo-icon{background:#10b981; width:36px; height:36px; border-radius:12px; display:flex; align-items:center; justify-content:center; color:white; font-weight:700; font-size:20px; box-shadow:0 2px 6px rgba(16,185,129,0.2);}
        .logo-text{font-size:1.5rem; font-weight:700; color:#0f3b2c; letter-spacing:-0.3px;}
        .nav-links{display:flex; gap:28px; align-items:center; flex-wrap:wrap;}
        .nav-links a{text-decoration:none; font-weight:500; color:#334155; transition:color 0.2s; font-size:1rem; white-space:nowrap;}
        .nav-links a:hover, .nav-links a.active{color:#10b981;}
        .hero{padding:3rem 0 3.5rem; background:linear-gradient(105deg, #ffffff 0%, #f6fef9 100%); border-bottom:1px solid #e2f0e8;}
        .hero-grid{display:flex; flex-wrap:wrap; align-items:center; gap:2rem;}
        .hero-content{flex:1.2;}
        .hero-badge{background:#dcfce7; color:#0a5c3e; display:inline-block; padding:5px 16px; border-radius:60px; font-size:0.85rem; font-weight:600; margin-bottom:1.2rem;}
        .hero-title{font-size:3rem; font-weight:800; line-height:1.2; letter-spacing:-0.02em; color:#0c4a3a; margin-bottom:1rem;}
        .hero-desc{font-size:1.1rem; color:#475569; max-width:90%; margin-bottom:1.8rem;}
        .feature-tags{display:flex; flex-wrap:wrap; gap:12px; margin-bottom:2rem;}
        .feature-tags span{background:#ffffff; padding:6px 14px; border-radius:40px; font-size:0.85rem; font-weight:500; border:1px solid #cbd5e1; color:#1f4a3c;}
        .btn-group{display:flex; flex-wrap:wrap; gap:16px;}
        .btn-primary{background:#10b981; color:white; padding:12px 28px; border-radius:44px; font-weight:600; text-decoration:none; display:inline-flex; align-items:center; gap:8px; transition:0.2s; border:none; box-shadow:0 2px 6px rgba(16,185,129,0.2);}
        .btn-primary:hover{background:#059669; transform:translateY(-2px);}
        .btn-secondary{background:white; border:1px solid #cbd5e1; padding:12px 28px; border-radius:44px; font-weight:600; text-decoration:none; color:#2c5f4a; display:inline-flex; align-items:center; gap:8px;}
        .btn-secondary:hover{background:#ecfdf5; border-color:#10b981;}
        .hero-stats{flex:0.9; background:#ffffffd9; border-radius:2rem; padding:1.6rem; box-shadow:0 15px 30px -10px rgba(0,0,0,0.05); border:1px solid #e2f0e8;}
        .stat-item{display:flex; align-items:center; gap:12px; margin-bottom:1.2rem; border-bottom:1px dashed #e2e8f0; padding-bottom:0.8rem;}
        .stat-icon{font-size:1.8rem; color:#10b981;}
        .section-title{font-size:2rem; font-weight:700; color:#0f3b2c; margin-bottom:1.5rem;}
        .quick-grid{display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin:2rem 0;}
        .quick-card{background:white; border-radius:1.5rem; padding:1.8rem 1.2rem; border:1px solid #e2f0e8; transition:all 0.2s; text-decoration:none; color:inherit; display:block;}
        .quick-card:hover{border-color:#10b981; box-shadow:0 8px 20px rgba(16,185,129,0.08); transform:translateY(-3px);}
        .quick-card i{font-size:2.2rem; color:#10b981; margin-bottom:1rem;}
        .quick-card h3{font-size:1.3rem; margin-bottom:0.5rem; color:#0f3b2c;}
        .quick-card p{color:#475569; font-size:0.9rem;}
        .problem-grid{display:grid; grid-template-columns:repeat(2,1fr); gap:16px; margin:2rem 0;}
        .problem-item{background:#f9fffc; border-radius:1.2rem; padding:1.2rem 1.5rem; border-left:5px solid #10b981; transition:0.2s; text-decoration:none; color:#1e293b; display:flex; align-items:center; gap:12px;}
        .problem-item:hover{background:#e6f7ef; border-left-width:8px;}
        .problem-item i{color:#10b981; font-size:1.4rem;}
        .tutorial-preview{display:grid; grid-template-columns:repeat(3,1fr); gap:24px; margin:2rem 0;}
        .tutorial-card{background:white; border-radius:1.8rem; padding:1.8rem; border:1px solid #eef2f0; transition:0.2s; text-decoration:none; color:inherit;}
        .tutorial-card:hover{border-color:#10b981;}
        .tutorial-card .tag{background:#dcfce7; color:#0a5c3e; padding:3px 12px; border-radius:30px; font-size:0.75rem; font-weight:600; display:inline-block; margin-bottom:12px;}
        .tutorial-card h4{font-size:1.25rem; margin-bottom:8px;}
        .trust-panel{background:linear-gradient(105deg, #ecfdf5, #ffffff); border-radius:2rem; padding:2rem; margin:2.5rem 0; border:1px solid #c7e9d9; display:flex; flex-wrap:wrap; align-items:center; justify-content:space-between;}
        .update-log{background:#f8fafc; border-radius:1.5rem; padding:1.5rem 2rem; margin:2rem 0; border:1px dashed #10b981;}
        .footer{background:#f0fdf4; color:#2c5f4a; padding:2.5rem 0; margin-top:4rem; border-top:1px solid #d4eadf;}
        @media (max-width:860px){
            .hero-title{font-size:2.4rem;}
            .quick-grid{grid-template-columns:repeat(2,1fr);}
            .tutorial-preview{grid-template-columns:1fr;}
            .problem-grid{grid-template-columns:1fr;}
        }
        @media (max-width:600px){
            .nav-links{gap:16px;}
            .quick-grid{grid-template-columns:1fr;}
        }
        .fa-arrow-right{transition:transform 0.2s;}
        .quick-card:hover .fa-arrow-right, .problem-item:hover .fa-arrow-right{transform:translateX(4px);}
        .badge-new{background:#fbbf24; color:#1e293b; margin-left:8px; padding:2px 8px; border-radius:40px; font-size:0.7rem;}